Determination Of Atrazine In Water Research Articles

Determination of Atrazine in Food, Water, and Synthetic Urine by Activated Carbon Cloth (ACC) Micro-Solid-Phase Extraction (µSPE) with High-Performance Liquid Chromatography – Diode Array Detection (HPLC-DAD)

Activated carbon cloth (ACC) was used as a micro solid phase extraction (µSPE) sorbent for the separation-preconcentration and determination of atrazine in water, juice, spice, and artificial urine by high-performance liquid chromatography-diode array detector (HPLC-DAD). The adsorbent mass was 10 mg, the adsorption-desorption duration was 90-s, and the proposed method can be applied to different matrices. The preconcentration factor of the method is 16.7. The limit of detection (LOD) and limit of quantification (LOQ) were 0.7 and 2.2 ng mL−1, respectively. The recovery values of the presented procedure were from 93 to 108% for real samples. This µSPE-HPLC-DAD protocol is practical and sensitive for atrazine and shows that activated carbon cloth is a highly effective adsorbent.

Quick and Easy Modification of Glassy Carbon Electrodes with Ionic Liquid and Tetraruthenated Porphyrins for the Electrochemical Determination of Atrazine in Water

AbstractAtrazine is a pesticide used to control broadleaf weeds, however its wide distribution and its high persistence in the soil and in surface waters has resulted in a public and environmental health problem. Present results shows the design, construction and characterization of glassy carbon electrodes modified with tetrarutenated metalloporphyrin (M=Ni (II) and Zn (II)) and 1‐butyl‐3‐methylimidazolium bis (trifluoromethylsulfonyl) imide, BMIMNTF2. The modification was reproducible and sensitive for the electrochemical detection of atrazine in neutral media. The detection limit was 230 nM when using GC/BMIMNTF2/ZnTRP and 540 nM with GC/BMIMNTF2/NiTRP, meaning that his methodology can be a feasible and inexpensive way to detect atrazine in trace levels.

Development of Ultra-sensitive Method for Determination of Trace Atrazine Herbicide in Environmental Water Using Magnetic Graphene Oxide-Based Solid-Phase Extraction Coupled with Dispersive Liquid-Liquid Microextraction Prior to Gas Chromatography-Mass Spectrometry

Atrazine is one of the most widely used herbicides and has caused much concern about its toxic effects on human and ecosystem. In the present work, a new and efficient method for ultra-trace determination of atrazine in water was developed, using magnetic graphene oxide-based solid-phase extraction combined with dispersive liquid-liquid microextraction, followed by gas chromatography-mass spectrometric determination. The effects of sample pH, contact time, type and volume of elution solvent and extraction solvent, desorption time, and salt addition on the extraction efficiency of atrazine were examined and optimized. Under the optimum conditions, an enrichment factor of 1033 and a detection limit of 0.6 ng L−1 for atrazine were achieved. The developed method was applied to the detection of atrazine in river water, lake water, pond water, and groundwater samples, with spiked recovery of 96–102% and RSD of 2.9–10.5%. Therefore, the proposed method allows proper monitoring of trace atrazine in various environmental waters.

Determination of Atrazine in Water by Magnetic Particle Immunoassay: Collaborative Study

A collaborative study was performed to determine mean recovery and precision for analysis of atrazine in drinking and surface waters by immunoassay. The study design was based on the blind duplicate test plan for collaborative studies. Three blank waters (municipal drinking water, well water, and surface water) were spiked at 3 atrazine levels. Two water samples with naturally incurred atrazine loads were also spiked with atrazine at 3 levels. In the enzyme-linked immunoassay method, the water sample is mixed with a pesticide-enzyme conjugate and added to paramagnetic particles with triazine-specific antibodies attached. After separation of antibody-bound atrazine and atrazine-enzyme conjugate from free components, the bound enzyme conjugate catalyzes a reaction producing a colored end product. The color developed is inversely proportional to the original concentration of atrazine in the water sample. Fourteen laboratories participated in the collaborative study. Data were analyzed for repeatability and reproducibility, and average recoveries at the spike levels were calculated. Over the concentration range tested, the mean recovery of atrazine spiked into blank and pesticide-contaminated waters was 104%. Overall RSDR averaged about 40% for atrazine concentrations near the method detection limit (0.05 microgram/L) and about 15% at concentrations above 5 times the detection limit (0.25 microgram/L). Corresponding single-analyst RSDr values were 24 and 10%. Recovery and precision for the 3 blank water matrixes and the waters that had been naturally contaminated with atrazine showed no significant differences. The magnetic particle immunoassay for determination of atrazine in water has been adopted first action by AOAC INTERNATIONAL.

Capillary Enzyme Immunoassay with Electrochemical Detection for the Determination of Atrazine in Water

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCapillary Enzyme Immunoassay with Electrochemical Detection for the Determination of Atrazine in WaterTongbo Jiang, H. Brian Halsall, William R. Heineman, Thomas Giersch, and Bertold HockCite this: J. Agric. Food Chem. 1995, 43, 4, 1098–1104Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 April 1995https://doi.org/10.1021/jf00052a044RIGHTS & PERMISSIONSArticle Views168Altmetric-Citations40LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (769 KB) Get e-Alerts Get e-Alerts

Determination of Atrazine in Water Using Tandem High-Performance Immunoaffinity Chromatography and Reversed-Phase Liquid Chromatography

A fully automated HPLC method was developed for the analysis of atrazine in water. This method used a high-performance immunoaffinity column for the extraction of atrazine and other triazines from samples, followed by separation of the refined compounds with an on-line reversed-phase column. This technique used only 250 μL of sample and required minimal sample pretreatment. Atrazine determinations by this method showed no significant interferences from the sample matrix, related triazines, or several common pesticides tested. Atrazine plus all of its major degradation products could be determined in 20 min, with a throughput of 10 min per injection

Rapid immunofiltration assay for the determination of atrazine in water and soil samples

Rapid immunofiltration assay for the determination of atrazine in water and soil samples

Determination of atrazine in water at low- and sub-parts-per-trillion levels by using solid-phase extraction and gas chromatography/high-resolution mass spectrometry

A capillary column gas chromatography/high-resolution mass spectrometry (GC/HRMS) method was developed determine atrazine in water at low- and sub-parts-per-trillon (ppt) levels. The method fills a need when the detection limits of routine GC, GC/MS, and high-performance liquid chromatography (HPLC) are inadequate for studies to evaluate transport and fate of herbicides in deep ground water systems. Atrazine and the added internal standard [ 13 C 3 ]atrazine were extracted from water samples by solid-phase extraction using a C 18 bonded silica cartbridge

Coupled reversed-phase liquid chromatography—capillary gas chromatography for the determination of atrazine in water

A fully automatable method for determining atrazine in water is described, based on enrichment of the atrazine from 10 ml of water on a small ODS liquid chromatographic column, desorption with methanol-water (60:40) + 5% 1-propanol and transfer to a gas chromatograph by concurrent eluent evaporation using a loop-type interface. The total analysis time is 35 min with a detection limit of ca. 3–5 ppt. Concurrent eluent evaporation of aqueous eluent mixtures suffers from a large temperature difference between transfer and elution of the first sharp peaks. On transfer at 112°C, the atrazine peaks were perfectly shaped only when eluted at about 250°C.