High-performance Liquid Chromatography Methodology Research Articles

A voltammetric method coupled with chemometrics for determination of a ternary antiparkinson mixture in its dosage form: greenness assessment

An electroanalytical methodology was developed by direct differential pulse voltammetric (DPV) measurement of Levodopa (LD), Carbidopa (CD) and Entacapone (ENT) mixture using bare glassy carbon electrode (GCE) in Britton Robinson (BR) buffer (pH = 2.0). A multivariate calibration model was then applied to the exported preprocessed voltammetric data using partial least square (PLS) as a chemometric tool. Additionally, the model was cross-validated and the number of latent variables (LVs) were determined to produce a reliable model for simultaneous quantitation of the three drugs either in their synthetic mixtures or in their marketed pharmaceutical formulation with high accuracy and precision. Data preprocessing was used to tackle the problem of lacking bi-linearity which is commonly found in electrochemical data. The proposed chemometric model was able to provide fast and reliable technique for quantitative determination of antiparkinson drugs in their dosage forms. This was successfully achieved by utilizing sixteen mixtures as calibration set and nine mixtures as validation set. The percent recoveries for LD, CD and ENT were found to be 100.05% ± 1.28%, 100.04% ± 0.53% and 99.99% ± 1.25%, respectively. The obtained results of the proposed method were statistically compared to those of a previously reported High Performance Liquid Chromatography (HPLC) methodology. Finally, the presented analytical method strongly supports green analytical chemistry regarding the minimization of potentially dangerous chemicals and solvents, as well as reducing energy utilization and waste generation.

Simultaneous Identification and Quantification of Phenylalanine, Glycine and Lysine amino acids and conjugated heterocyclic amines in Maillard chemical model system using RP-HPLC-DAD

In this study, we developed a simple reversed-phase high-performance liquid chromatography (RP-HPLC) methodology for simultaneous identification and quantification of three types of mix: (1) phenylalanine and PHIP; (2) glycine and MeIQx; (3) lysine and 4,8 DiMeIQx in Maillard chemical model systems. In addition, we investigated the effects of different conditions on decreasing amino acids and heterocyclic amines (HCA) formation in chemical model systems. The results show that the developed methods used to separate the proposed mixes gave a relative standard deviation (RSD)% of less than 2% of peak area and retention time, thus proving the robustness and high reproducibility of the proposed method. The relationship between concentration and peak areas is linear with high statistical significance (p<0.001). The residual and slope of linear regression give a limit of detection LoD) and (LoQ) of phenylalanine and PHIP were (2.92- 0.029 ppm),(9.73- 0.098 ppm),respectively, which indicate the high sensitivity of the developed method. Moreover, the findings illustrate that a water ratio of 20% leads to a decrease in phenylalanine versus the largest amount of PHIP, and phenylalanine is the most active amino acid with a decreasing percentage up to 99%.

An analytical framework combining online high-performance liquid chromatography methodologies and biological properties of different extracts of Leonurus cardiaca.

Little or no information is available concerning online high-performance liquid chromatography (HPLC) antioxidants and the antibiofilm effect of Leonurus cardiaca. Five distinct extractions of methanolic, ethyl acetate, dichloromethane, hexane, and water were obtained from L. cardiaca. In the online-HPLC-antioxidant analysis of all examined samples, rosmarinic acid emerged as the primary antioxidant, registering concentrations ranging from 6 to 15ppm at wavelengths of 517 and 734nm. Notably, the water extract exhibited robust antioxidant activity In vitro. Regarding acetylcholinesterase and butrylcholinesterase inhibition, the n-hexane extract exhibited superior inhibition with values of 3.08 and 5.83 galanthamine equivalent, respectively. Except for the water extract, all tested extracts (at a concentration of 20μg/mL) exhibited substantial inhibitory activity against biofilm formation, in many cases superior to 80%, and reached even 94.52% againstEscherichia coli. Although less vigorous, the extracts also acted against the mature biofilm (inhibition up 76.50% againstStaphylococcus aureus). They could work against the metabolism inside an immature and mature biofilm, with inhibition percentages up to 93.18% (vs.Pseudomonas aeruginosa) and 76.50% (vs.Acinetobacter baumannii), respectively. Considering its significant antioxidants, enzyme inhibition, and antimicrobial activity, L. cardiaca emerges as a promising candidate for therapeutic potential.

Incidences of aflatoxin contaminations in ingredients, feed and products of poultry from two regions in Ghana

Commercial poultry feed required for proper growth of birds and egg production contains essential nutrients with maize as key component. Inadequately dried maize is prone to aflatoxin contamination and therefore when used in feed formulation for poultry may compromise the safety of the feeds and poultry products. This study investigated the levels of aflatoxins in feed ingredients, feed and poultry products sampled from Eastern and Greater -Accra regions of Ghana. The aflatoxin levels of B1, B2, G1, and G2 were determined using a High-Performance Liquid Chromatography (HPLC) methodology. Main feed ingredients used were fishmeal, cotton seed cake, soya meal, rice, wheat and maize bran as well as maize grains. There was correlation between the level of aflatoxins and moisture content in poultry feed ingredients. All the poultry feeds (100 %) analysed showed the presence of aflatoxins with total aflatoxins recorded ranging from 5.32 to 29.88 μg/kg. Maize samples of the poultry feeds, from all two regions, revealed maize to be a major contributor to the overall total aflatoxin contents found in the feed. Five (5) out of ten (10) communities investigated in the two (2) regions where the poultry feeds were examined recorded total aflatoxin levels in maize above the Ghana Standard Authority (GSA) specification of 20 μg/kg. Aflatoxins G1 and G2 were not detected in all samples of chicken meat and eggs. Total aflatoxin levels recorded for all chicken meat and eggs were below GSA specification of 5 μg/kg; implying that these products were safe for consumption.

Greener Stability-Indicating HPLC Approach for the Determination of Curcumin in In-House Developed Nanoemulsion and Curcuma longa L. Extract

Despite the fact that several analytical methodologies have been reported for the determination of curcumin (CCM) in a wide range of sample matrices, the greener liquid chromatographic approaches to determine CCM are scarce in the literature. Therefore, this research is designed to develop and validate a greener stability-indicating “high-performance liquid chromatography (HPLC)” methodology to determine CCM in an in-house developed nanoemulsion, Curcuma longa L. extract, and commercial tablets. CCM was measured on a Nucleodur (150 mm × 4.6 mm) RP C18 column with 5 µm-sized particles. Ethanol and ethyl acetate (83:17 v/v) made up the greener eluent system, which was pumped at a flow speed of 1.0 mL/min. At a wavelength of 425 nm, CCM was detected. The greener HPLC methodology was linear in the 1–100 µg/mL range, with a determination coefficient of 0.9983. The greener HPLC methodology for CCM estimation was also rapid (Rt = 3.57 min), accurate (%recoveries = 98.90–101.85), precise (%CV = 0.90–1.11), and sensitive (LOD = 0.39 µg/mL and LOQ = 1.17 µg/mL). The AGREE approach predicted the AGREE score of 0.81 for the established HPLC technique, indicating an outstanding greenness profile. The utility of the greener HPLC methodology was demonstrated by determining CCM in the in-house developed nanoemulsion, Curcuma longa extract, and commercial tablets. The % amount of CCM in the in-house developed nanoemulsion, Curcuma longa extract, and commercial tablets was found to be 101.24%, 81.15%, and 78.41%, respectively. The greener HPLC methodology was able to detect its degradation product under various stress conditions, suggesting its stability-indication characteristics. These results suggested that CCM in developed nanoemulsion, plant extract samples, and commercial tablets may be routinely determined using the greener HPLC methodology.

Facile analysis of rice bran oil to compare free unsaturated fatty acid compositions of parental and hybrid rice lines.

Rice bran oil (RBO) has been a popular choice of cooking oil in several Asian countries for decades, and the interest in RBO is fast growing in Western countries due to the high levels of hearty unsaturated fats and other components beneficial to health. Further knowledge of unsaturated fatty acid content and composition in rice lines will assist in improving the quality of rice bran processing by allowing robust extraction of rice bran for oil production. The studies focused on the RBO composition of rice lines with beneficial genotypes are scarce. Accordingly, we investigated the total bran lipid content and composition of three of the most abundant, healthy, unsaturated fatty acids that freely exist in RBO: oleic, linoleic, and α-linolenic acids in nine parental lines (two male sterile lines and seven male lines) and seven hybrid rice lines, by utilizing an efficacious organic extraction to collect RBO and by developing a user-friendly reverse-phase high-performance liquid chromatography (HPLC) methodology. Our results showed that the hybrid lines had the highest oil content (F ratio = 7.2017, p value = 0.0019), while the male lines had the highest levels of two of the three free unsaturated fatty acids analyzed (linoleic acid, mg and oleic acid, mg). Oil weight was negatively correlated with α-linolenic acid (r = -0.6535, p value <0.0001). All three free unsaturated fatty acids were positively correlated. Our samples' natural variation in lipid content suggests that some rice lines are more suitable for oil production.

Efficient Synthesis of Potential Impurities in Levonadifloxacin (WCK 771).

Levonadifloxacin (WCK 771) is a novel broad-spectrum anti-methicillin-resistant Staphylococcus aureus (MRSA) agent recently launched in India. Five process impurities and one degradation impurity were synthesized as reference standards for their quantification by high-performance liquid chromatography (HPLC) methodology in drug substance and drug product. These compounds are not easily commercially available. The synthesis and characterization of these impurities are discussed in detail.

Understanding photoresist - electroplating bath interactions using HPLC methodology

Abstract With the rapidly expanding range of design and integration flows required for advanced packaging, both foundries and OSATs alike are evaluating new types of materials for additive manufacturing - this is especially pertinent for both resist materials and galvanic plating baths. This problem is far from new (1), it is a part of the regularly required re-evaluation of process-material interactions (2) for the new packaging integration schemes, driven by changes in design, process flow, and technology requirements. With increasing demands for bath longevity and robustness of plating performance, material vendors are motivated to minimize interactions between the plating bath chemistries and photoresists, defining the plating pattern. In this study, we have evaluated the effect of several factors including - resist type (i.e. positive, negative, general-purpose vs “plating/packaging” type) and process parameters for both resist and bath material (by comparing several resist materials from different manufacturers with varying processing conditions on silicon wafers). We used reverse phase HPLC with UV-detection as a method of choice in this study to compare resist extractables into the galvanic baths. We utilized a copper plating packaging type galvanic bath as a representative bath material. We evaluated semi-quantitatively the extractable via their HPLC signature into the bath to compare resist properties and further attempt to extrapolate resist stability and breakdown magnitude with possible effects on bath life. The utility of the method developed here allows for comparing and quantifying (note - evaluation is semi-quantitative since no standard solutions of leached components exist) extractables via HPLC (high-performance liquid chromatography) allows for a better understanding of resist bath stability “factors”, and can be further expanded into an online method for detecting early signs of bath contamination by a photoresist. It can also be used for aiding lithographers to better pre-assess photoresist capabilities and aid in the material selection for future plating applications.

Non-mercaptalbumin is significantly associated with the coronary plaque burden and the severity of coronary artery disease

Human non-mercaptalbumin (HNA), oxidized form of serum albumin, has been reported as a useful marker in oxidative stress-related diseases; however, few reports have examined the association between HNA and the severity of coronary artery disease (CAD). The present study evaluated whether the HNA fraction is correlated with coronary artery stenosis in 140 patients considered to have a high risk of CAD or who were suspected of having acute coronary syndrome. The severity of CAD was defined by the number of stenotic coronary vessels and a severity score system (the Gensini score). HNA measurements were performed using our newly established high-performance liquid chromatography methodology. The results had shown that HNA was significantly increased in patients with three-vessel disease, compared with those without CAD or with single-vessel disease (p = 0.025), and was positively correlated with the Gensini score (ρ = 0.421, p < 0.001). A multivariate analysis showed that the number of stenotic vessels was an independent and significant factor associated with HNA (ρ = 1.246, p = 0.012). A logistic regression analysis showed that HNA was a strong predictor of multivessel CAD (odds ratio, 1.12; 95% confidence interval, 1.020–1.229; p = 0.017). These findings indicate that the measurement of HNA could be clinically practical for predicting the severity of coronary artery stenosis.

Implementation of Analytical Quality-by-Design for Developing a Robust HPLC Method for Quantitative Estimation of Voriconazole: Application in Drug Formulations

The current studies endeavour to develop and validate a simple, sensitive and robust reversed- phase (RP) high-performance liquid chromatography (HPLC) methodology for quantitative estimation of voriconazole (VRC), following systematic principles of Analytical Quality-by-Design (AQbD). A comprehensive risk assessment plan, followed by factor screening studies employing Taguchi design, was executed to select “vital few” critical method parameters, influencing critical analytical attributes. Subsequently, response surface optimisation studies were conducted on the identified critical method parameters, viz., mobile phase ratio and flow rate, with chosen critical analytical attributes, viz., peak area, theoretical plate count, retention time and peak tailing, employing a Central Composite Design. The design space, demarcating the optimal method operating conditions, was identified using graphical optimisation and subsequently validated employing Monte Carlo simulations. The optimal solution consisted of acetonitrile and acetic acid solution (0.05 %, pH 4) as mobile phase (50:50 v/v), flow rate of 1 mL/ min with a detection wavelength of 256 nm, exhibiting linearity between 0.1 and 50 μg/mL in methanol and Hanks balanced salt solution. Validation studies confirmed precision (97.78-103.42 %), accuracy (98.99-102.34 %), and suitability of the developed analytical method for effective quantification of VRC with high sensitivity (LOD: 0.031 μg/mL; LOQ: 0.093 μg/mL). The validated analytical technique was successfully ratified for quantification of VRC in drug nanoformulations too. In a nutshell, the application of AQbD and Monte Carlo simulations aided in developing a robust analytical method for the estimation of VRC per se as well as in drug nanoformulations.

Comprehensive ethoxymer characterization of complex alcohol ethoxy sulphate products by mixed-mode high-performance liquid chromatography coupled to charged aerosol detection

The present work describes a simultaneous mixed-mode high performance liquid chromatography (HPLC) method combined with a universal and non-selective-response detector for the complete ethoxymer profiling of alcohol ethoxy sulphate mixtures. The optimized HPLC methodology combines the dual hydrophilic (HILIC) and reversed-phase selectivity of a surfactant-type column in order to render a comprehensive and simultaneous separation of more than 50 endogenous ethoxymers in a single analysis. Furthermore, an accurate quantitation of every single analyte was achieved using a final universal charged aerosol detector (CAD) including specific mathematical processing tools. Results obtained helped describing a complete alkyl chain and ethoxymer distribution of the investigated AES samples. Method validation evidences provided reliability of the individual ethoxymer contributions determined with the proposed HPLC−CAD methodology. Regarding accuracy including independent nuclear magnetic resonance (NMR) experiments, an excellent correlation was found between the structural information provided by a COSY NMR spectrum and the CAD results regarding the mono/polyethoxylated and the non-ethoxylated/ethoxylated distribution. Additional calculations including the average molecular weight and the degree of ethoxylation for the reference AES sample showed minimum differences (relative error < 1 %) between the two considered techniques. An outstanding precision and linearity along the working concentration range (r2>0.999) was also observed. The individual limit of detection for the target sulphate ethoxymers was determined to be in the low ppm range. Further validated distribution profiles for a large number of AES samples demonstrated the applicability of the optimized HPLC−CAD methodology to routine surfactant screenings. Therefore, the hereby developed methodology provided extensive information regarding the detailed individual ethoxymer profile of AES formulations, which can be extremely useful for the surfactant industry in order to gain information on specific synthesis routes and/or detergency properties.

Pharmacopoeial HPLC methodology improvement: A case study of piroxicam

In the present study, a simple, stability-indicating and cost-effective reversed-phase high performance liquid chromatography (HPLC) method was developed and validated for the determination of piroxicam in commercial and masterful formulation capsules as an alternative to existing methods. The improved HPLC method was carried out on a C18 column (150 mm x 4.6 mm i.d., 5 μm), maintained at 30 °C. The mobile-phase consisted of a solution of triethylamine 0.3% pH 5.0 and acetonitrile (70:30; v/v), run at a flow rate of 1.0 mL/min and using photodiode array (PDA) detection at 248 nm. The chromatographic separation is obtained with retention time of 6.8 min, presenting adequate system suitability parameters for HPLC analysis. Validation parameters such as the specificity, linearity, matrix effect, precision, accuracy and robustness were evaluated in accordance with the ICH Q2(R1) and Brazil RDC 166/17 requirements, giving satisfactory results within the acceptable range. The proposed method was successfully validated and applied for piroxicam analysis, contributing to improve the quality control, and can be used as easy, accurate, low time-consuming alternative to pharmacopeial quantification methodology of drug.

Involving Students in the Distributed Pharmaceutical Analysis Laboratory: A Citizen-Science Project to Evaluate Global Medicine Quality.

The distributed pharmaceutical analysis laboratory (DPAL) is a collaboration between 30 academic institutions around the world, whose goal is to determine the quality of medicines collected from partner organizations in low- and middle-income countries (LMICs). Institutions complete system suitability for a high-performance liquid chromatography (HPLC) system using United States Pharmacopeia (USP)-traceable reference standards, and are then approved to analyze batches of samples that are collected in LMICs by covert shoppers. Open Science Framework (OSF) allows DPAL participants access to resources for the program including an HPLC methodology manual, a wiki with HPLC troubleshooting information, detailed checklists and Excel templates for system suitability and sample assay, as well as steps for reporting results. Participants incorporate the DPAL program into their academic curriculum as undergraduate research or via lab activities for analytical chemistry or instrumental analysis courses. Over a thousand samples have been analyzed through DPAL in the last three years, and 168 samples with quality problems have been discovered, including falsified acetaminophen, adulterated amoxicillin-clavulanate and doxycycline, and substandard losartan. These quality problems are reported to the medicine regulatory agencies in the countries of origin and the WHO Rapid Alert System for further action. This real-world program gives students a hands-on opportunity to see the importance of analytical metrics taught in the classroom.

Sialic acids expression in newborn rat lungs: implications for pulmonary developmental biology

Mammalian lung development proceeds during the postnatal period and continues throughout life. Intricate tubular systems of airways and vessels lined by epithelial cells are developed during this process. All cells, and particularly epithelial cells, carry an array of glycans on their surfaces. N-acetylneuraminic (Neu5Ac) and N-glycolylneuraminic (Neu5Gc) acids, two most frequently-occurring sialic acid residues, are essential determinants during development and in the homeostasis of cells and organisms. However, systematic data about the presence of cell surface sialic acids in the postnatal lung and their content is still scarce. In the present study, we addressed the histochemical localization of Neu5Ac > Neu5Gc in 0-day-old rat lungs. Furthermore, both residues were separated, identified and quantified in lung membranes isolated from 0-day-old rat lungs using high-performance liquid chromatography (HPLC) methodologies. Finally, we compared these results with those previously reported by us for adult rat lungs. The Neu5Ac > Neu5Gc residues were located on the surface of ciliated and non-ciliated cells and the median values for both residues in the purified lung membranes of newborn rats were 5.365 and 1.935 μg/mg prot., respectively. Comparing these results with those reported for the adults, it was possible to observe a significant difference between the levels of Neu5Ac and Neu5Gc (p < 0.001). A more substantial change was found for the case of Neu5Ac. The preponderance of Neu5Ac and its expressive increase during the postnatal development points towards a more prominent role of this residue. Bearing in mind that sialic acids are negatively charged molecules, the high content of Neu5Ac could contribute to the formation of an anion “shield” and have a role in pulmonary development and physiology.

Dissipation of six neonicotinoids in cotton by high performance liquid chromatography and quechers methodology

Dissipation of six neonicotinoids in cotton by high performance liquid chromatography and quechers methodology

Vitamin C measurement in critical illness: challenges, methodologies and quality improvements.

Background There is renewed interest in high-dose vitamin C interventions in clinical medicine due to its antioxidant properties, safe use and cost-effectiveness. Yet, randomised control trials (RCTs) employing these interventions are failing to include robust analytical methodology and proper sample handling and processing techniques. Consequently, comparisons between studies becomes impossible as there is no metrological traceability and results may be prone to pre-analytical errors. Content Through published vitamin C stability studies, method comparison papers and data from vitamin C external quality assurance programs, an assessment was made on the functionality of current methods for critically ill patient samples. Summary Data was obtained from two external quality assurance programs, two papers assessing sample stability and interlaboratory agreement and a publication on vitamin C method comparisons. A shift from spectrophotometric and enzymatic methodologies to high performance liquid chromatography (HPLC) greatly improved the variability and interlaboratory agreement. Therefore, the current analytical performance of vitamin C HPLC methodologies are acceptable for the requirements of a high-dose vitamin C RCTs. Outlook Recommendations across the total testing process of vitamin C have been provided to improve the quality of the results. The harmonisation of sample handling and processing procedures will further improve the reliability of current analytical methodologies.

Development of a rapid HPLC method for quantification of the copper tetramibi tetraflourborate in a kit for preparation of Technetium 99 m Sestamibi Injection.

Radiopharmaceuticals are radioactive compounds that can be used for diagnostic and therapeutic purposes. Technetium (99mTc) Sestamibi is the most commercialized radiopharmaceutical in the world. It includes a coordination complex consisting of the radioisotope 99 m technetium bound to six copper tetramibi tetrafluorborate ligands, and is mainly used to image the myocardium via scintigraphy. As radiopharmaceuticals are regarded as drugs, they are subject to the same regulations; therefore, the objective of this study was to develop a quantification method for the active pharmaceutical ingredient before their complexation with the radioisotope by employing high-performance liquid chromatography (HPLC) methodology. A simple and efficient method (retention time = 2.5 min) was developed and validated for copper tetramibi tetrafluorborate in the final product using a buffer and organic solvent mixtures (ACN-methanol-ammonium sulfate buffer) and a C18 column. The analytical protocol was fast, taking around 30 min until evaluation of results. The validation parameters were evaluated with satisfactory results: in terms of linearity r > 0.99 (160-240 μg/mL) and no deviation was observed. The RSD of precision was <5%, and an average recovery of 99% was observed for accuracy. The proposed method was thus considered adequate for routine analysis in the pharmaceutical industries.

High Performance Liquid Chromatography Separation of Epigenetic Cytosine Variants.

Epigenetic modifications enable cells to genetically respond to chemical inputs from environmental sources. These marks play a pivotal role in normal biological processes (e.g., differentiation, host defense and metabolic programs) but also contribute to the development of a wide variety of pathological conditions (e.g., cancer and Alzheimer’s disease). In particular, DNA methylation represents very stable epigenetic modification of cytosine bases that is strongly associated with a reduction in gene activity. Although High Performance Liquid Chromatography (HPLC) methodologies have been used to resolve methylated cytosine from unmodified cytosine bases, these represent only two of the five major cytosine analogs in the cell. Moreover, failure to resolve these other cytosine analogs might affect an accurate description of the cytosine methylation status in cells. In this present study, we determined the HPLC conditions required to separate the five cytosine analogs of the methylation/demethylation pathway. This methodology not only provides a means to analyze cytosine methylation as a whole, but it could also be used to more accurately calculate the methylation ratio from biological samples.

Development of a chromatographic method with multi-criteria decision making design for simultaneous determination of nifedipine and atenolol in content uniformity testing

A new robust and reliable high-performance liquid chromatography (HPLC) method with multi-criteria decision making (MCDM) approach was developed to allow simultaneous quantification of atenolol (ATN) and nifedipine (NFD) in content uniformity testing. Felodipine (FLD) was used as an internal standard (I.S.) in this study. A novel marriage between a new interactive response optimizer and a HPLC method was suggested for multiple response optimizations of target responses. An interactive response optimizer was used as a decision and prediction tool for the optimal settings of target responses, according to specified criteria, based on Derringer's desirability. Four independent variables were considered in this study: Acetonitrile%, buffer pH and concentration along with column temperature. Eight responses were optimized: retention times of ATN, NFD, and FLD, resolutions between ATN/NFD and NFD/FLD, and plate numbers for ATN, NFD, and FLD. Multiple regression analysis was applied in order to scan the influences of the most significant variables for the regression models. The experimental design was set to give minimum retention times, maximum resolution and plate numbers. The interactive response optimizer allowed prediction of optimum conditions according to these criteria with a good composite desirability value of 0.98156. The developed method was validated according to the International Conference on Harmonization (ICH) guidelines with the aid of the experimental design. The developed MCDM-HPLC method showed superior robustness and resolution in short analysis time allowing successful simultaneous content uniformity testing of ATN and NFD in marketed capsules. The current work presents an interactive response optimizer as an efficient platform to optimize, predict responses, and validate HPLC methodology with tolerable design space for assay in quality control laboratories.

A comparison of the determination and speciation of inorganic arsenic using general HPLC methodology with UV, MS and MS/MS detection

The determination and speciation of arsenic in natural resources such as drinking water and agricultural soils has been a growing concern in recent years due to its many toxicological effects [1–3]. To speciate and quantitate concentrations of <1 ppm of arsenic, typically an ion chromatograph (IC) interfaced to an inductively coupled plasma mass spectrometer (ICP-MS) is employed [4–9]. This methodology may be very robust and sensitive, but it is expensive and not as ubiquitous as high performance liquid chromatography (HPLC) with ultraviolet (UV) absorbance detection or electrospray ionization mass spectrometry (ESI-MS). Anion exchange chromatography is a well-documented means of speciating arsenite (As(III), As2O3) and arsenate (As(V), AsO4) using UV [10], conductivity [11], or ESI-MS detection [12,13]. This paper demonstrates the utilization of common liquid chromatographic instrumentation to speciate and determines inorganic Arsenic compounds using UV or MS via selected ion recording (SIR) or multiple reaction monitoring (MRM) detection. This paper describes the analysis of arsenite and arsenate samples prepared using both deionized and ground water. The limit of quantitation for the techniques described in this paper for samples spiked in ground water were 454 ppb (As(III)) and 562 ppb (As(V)) for UV detection, 45.4 ppb (As(III)) and 56.2 ppb (As(V)) for SIR detection, and 4.54 ppb (As(III)) and 5.62 ppb (As(V)) for MRM detection.