Elements In Water Samples Research Articles

Investigation of Lead, Cadmium, and Nickel in Water Samples from Al-Muthanna Governorate, Iraq, and Evaluation of The Pollution Indicators

Background: The Iraqi environment, especially in the southern region, has been contaminated as a result of human activities. The detection of heavy metals in water samples is the preferred method for monitoring the toxic levels, which are very important for environmental protection and human health. Methods: Heavy metal concentrations of lead (Pb), cadmium (Cd), and nickel (Ni) were investigated in water samples from Al-Muthanna governorate, southern Iraq. The selected water samples were taken from different sources of tap water and river samples from the Euphrates and collected from various locations: residential, agricultural, and industrial. Results: The mean values of Pb, Cd, and Ni in tap water samples are 3.76, 2.62, and 84.88 μg/L, respectively, while the corresponding element levels in river water are 11.21, 7.58, and 104.31 μg/L, respectively. Rivers water samples recorded higher levels of toxic metals than tap water samples. Concentrations of toxic elements in water samples from industrial locations of Al-Muthanna governorate are higher than in the agricultural and residential places. Toxic metals in water samples can be arranged in the following sequence: Ni > Pb > Cd. Conclusion: The levels of heavy metals in most water samples were above the permissible levels according to USEPA; therefore, it is recommended that the water samples should be regularly monitored for heavy metals to prevent the effect of heavy metals contamination in the human food chain.

Levels of Potentially Toxic and Essential Elements in Water and Estimation of Human Health Risks in a River Located at the Interface of Brazilian Savanna and Amazon Biomes (Tocantins River).

The Tocantins-Araguaia basin is one of South America's largest river systems, across three Brazilian states (Maranhão, Tocantins, and Pará), within the Legal Amazon region. Despite draining extensive Cerrado savanna and rainforest ecosystems, it has suffered significant degradation, notably in the past 40 years. Human activities, including agricultural expansion, deforestation, and the introduction of non-native species, have worsened the environmental damage, which is alarming since many residents and villages along the middle Tocantins River rely on it for water supply, recreation, and fishing. This study assessed the concentration of potentially toxic and essential elements in water samples from four sampling sites distributed along the middle Tocantins River. The monitoring occurred throughout 2023, involving the measurement of parameters both on-site and in the laboratory. Water quality and its health implications were evaluated using the Weighted Arithmetic Water Quality Index (WAWQI), the Water Quality Index (WQI), and the health risk assessment index. The levels of aluminum, copper, iron, magnesium, and selenium exceeded legal standards. Seasonal fluctuations indicate a complex dynamic influenced by climatic or seasonal factors, with February showing the highest values. Site P1, located in urban areas, exhibited elevated mean concentrations for conductivity, total dissolved solids (TDS), and chlorophyll, indicating the need for continuous monitoring. The nitrogen concentrations at P1 raise concerns regarding drinking water quality, which is a concern for the region's residents who use untreated river water. Despite seasonal variations in element concentrations, the overall WAWQI categorized all sections as "Excellent," and the WQI rated as "Good." Human health risk assessments detected no risks, but continuous monitoring and interventions are crucial for sustained water quality improvement.

Vine Copula Model: Application to Chemical Elements in Water Samples

Copula can link the bivariate distribution function with marginal distribution functions without requiring specific information about the interdependence among random variables. There are several types of copulas, such as elliptical copulas, Archimedean copulas, and extreme value copulas. However, in multivariate modeling, each type of copula has limitations in modeling complex dependence structures in terms of symmetry and tail dependence properties. The class of vine copulas overcomes these limitations by constructing multivariate models using bivariate copulas in a tree-like structure. The bivariate copulas used in this study include the Clayton, Gumbel, Frank, Gaussian, and Student's t copula families. This study discusses the construction of vine copula models, parameter estimation, and their applications. The construction of vine copulas is done through the decomposition of conditional probability density functions and substituting bivariate copula density functions into the decomposition results. The data used in the study is the logarithm of the concentration of chemical elements in water samples in Colorado. The parameter estimation method used is pseudo-maximum likelihood with sequential estimation. Model selection is then performed using the Akaike information criterion (AIC) to determine the most suitable model. The results indicate that Caesium and Titanium have a dependency relationship with Scandium. Moreover, Scandium and Titanium exhibit the strongest dependence compared to other variable pairs.

A weighted independence test based on smooth estimation of Kendall distribution

In this study, we introduce a nonparametric test of independence which is based on a weighted Cramér-von Mises distance of the Bernstein estimate of the Kendall distribution function. We examine the power and the size of the new weighted test and, we compare it with the non-weighted nonparametric tests of independence through a Monte Carlo simulation study. The simulation results indicate that both of the choices of the weights and the polynomial degree has a significant effect on the test power. Finally, the procedure is applied to a dataset on chemical elements in water samples for the purpose of illustration.

Effects of local land use on riparian vegetation, water quality, and in situ toxicity

The conversion of riparian forests into agricultural land results in the loss of water quality and aquatic biota health. The objectives of this study were therefore to determine the proportion of land use with emphasis on the type of vegetation cover; evaluate the limnological parameters and concentration of inorganic elements in the water of the São José stream in the Dourados River Basin, Mato Grosso do Sul, Brazil; correlate land use with the concentrations of inorganic elements in water; and evaluate the risk to preservation aquatic biota and in situ toxic effect on Astyanax lacustris. We collected samples from the São José Stream in 2020 and evaluated land use with high resolution aerial images. The inorganic elements in water samples were quantified using inductively coupled plasma optical emission spectrometry. In the surroundings of the São José stream, a reduction in riparian forest was observed with a proportion of only 16.32% of the area and the predominance of agricultural areas with 75.06%. The concentrations of dissolved oxygen (1.510 mg L-1) and P (> 0.235 mg L-1) in the water did not comply with the national legislation. In addition, Al and P indicated risks regarding the conservation of aquatic biota (risk quotient >1). The in situ evaluation of A. lacustris also revealed toxicity in the water. The results indicate environmental imbalance in the São José stream, requiring mitigation measures for its restoration and the sustainable use of its resources.
 Keywords: anthropic action, inorganic contaminants, risks for aquatic biota.

Mass Balance and Dissolved Metal Loads in the Mamut Copper Mine Temporary Settling Pond

Mining activities which involve certain sulphide bearing minerals generally produce acid mine drainage. The understanding of the characteristics of dissolved metals before they are discharged into streams is important for environmental management. This study focuses on a small water reservoir in the former Mamut Copper Mine, known locally as the Temporary Settling Pond (TSP). The main objective of this study is to estimate the mass balance and load of dissolved metals in the acid mine drainage (from the mine pit to the TSP). Water sampling and discharge measurements were done during baseflow and high flows using water level sensors and dataloggers. The analysis of dissolved elements in water samples was done using ICP-OES, while sulphate was analysed using a ‘HACH’ spectrometer kit. Through the mass balance method, Fe had the highest removal rate followed by Cu, Al, Zn and Mn. The highest dissolved metal load discharged from the TSP was Al followed by Mn, Cu, Zn and Fe.

Assessment of oral and dermal health risk exposures associated with contaminated water resources: an update in Ojoto area, southeast Nigeria

ABSTRACT In this paper, the oral and dermal health risks of potentially toxic elements in water samples collected from Ojoto area in southeast Nigeria were studied using HHRISK code and water quality index. The water samples were analysed for physicochemical parameters based on standard guidelines. Average concentration of the potentially toxic elements in the water was in the order: Pb2+ > Fe2+ > Zn2+ > Ni2+ > Cr3+. To assess the level of surface and groundwater pollution, water quality index was calculated. Results of the water quality index suggest that 11% of the water samples are in good condition; 25% have poor quality, 3% have very poor quality, and 53% have quality that is unfit for human consumption. The HHRISK code was used to quantify the health risks associated with the use of the water resources. Results revealed that most of the water samples expose their users to carcinogenic and non-carcinogenic health risks. Cumulative non-carcinogenic risk scores (for both children and adults) and the majority of cumulative carcinogenic risk values were found to be above regulatory limits. The adult population is exposed to lower non-carcinogenic and carcinogenic health risks, implying that children are more vulnerable. The water supplies are of substandard quality and could cause serious health issues when ingested than when used for bathing and washing purposes. Simple linear regression models showed positive agreement between the results of the WQI and HHRISK code. To safeguard the water resources, avoid additional water contamination, and reduce public health hazards associated with poor water quality, strategic mitigation strategies are recommended.

Assessment of trace element toxicity in surface water of a fish breeding river in Bangladesh: a novel approach for ecological and health risk evaluation

In recent decades, water quality is a great concern for the human being as it is the most important natural resource but water is polluted by increasing population activities. In this study, surface water samples were collected in the wet and the dry season from Halda River, Bangladesh, and 12 physicochemical properties and 10 traces elements (Cd, Cr, Mn, Fe, Co, Cu, Zn, As, Pb, and Hg) were analyzed to assess the metal toxicity, identify the possible sources, and determine possible carcinogenic and noncarcinogenic risk for adults and child residents. During wet season, the mean concentrations of Cd, Cr, Mn, Fe, Co, Cu, Zn, As, Pb, and Hg were 0.032 ± 0.028, 0.004 ± 0.002, 0.010 ± 0.012, 0.38 ± 0.08, 0.010 ± 0.017, 3.33 ± 1.16, 0.062 ± 0.008, 1.34 ± 1.17, 0.030 ± 0.014, and 0.007 ± 0.002 mg/L, respectively, whereas the concentrations were measured as 0.04 ± 0.017, 0.060 ± 0.036, 0.150 ± 0.134, 0.58 ± 0.11, 0.049 ± 0.017, 0.172 ± 0.166, 0.393 ± 0.212, 1.07 ± 0.989, 0.104 ± 0.121, and 0.003 ± 0.002 mg/L, respectively, during the dry season. The levels of trace elements in water samples were much higher than the guideline values for safe limits of drinking water and the protection of freshwater aquatic life, indicated that water from this river is not safe for drinking and/or cooking purposes. Trace element evaluation index indicated that water was found to be high contamination while ecological risk index showed low to very high contamination. All hazard quotient and hazard index (HI) values were higher than the risk threshold of unity. HI values for child were higher than those for adult, indicating that the health of children is at dramatically higher risk than adults. Arsenic for water ingestion and dermal pathways was the primary contributors to total health risk (HI/THI) indicated that As in surface water of the Halda River might pose health risks to residential users.

Quadrupole inductively coupled plasma mass spectrometry and sector field ICP-MS: a comparison of analytical methods for the quantification of As, Pb, Cu, Cd, Zn, and U in drinking water

Abstract A comparison was carried out between quadrupole inductively coupled plasma mass spectrometry (ICP-QMS) detection and sector field ICP-MS (ICP-SFMS) detection for quantification of elements such as arsenic (As), cadmium (Cd), copper (Cu), lead (Pb), zinc (Zn), and uranium (U) in drinking water. A drinking water sample obtained from the International Atomic Energy Agency was used for validation measurement methods. ICP-QMS and ICP-SFMS obtained recoveries of 95–107% and 95–105%, respectively. Moreover, the relative standard deviation for ICP-QMS was <5% in comparison with ICP-SFMS, which was <2%. The limits of detection obtained in ICP-MS and ICP-SFMS for each element were under ng L−1, except for Zn. Both methods were applied to evaluate these elements in drinking water for consumption in Mexico. According to Mexican Regulation for Human Drinking Water NOM-201-SSA1-2015 and Environmental Protection Agency (EPA) from the United States, the values are within the allowable limits. In conclusion, ICP-QMS and ICP-SFMS are excellent choices for measurements of these toxic elements in water samples because of high precision and accuracy in routine analysis minutes, while also exhibiting excellent precision and accuracy in routine analysis.

Micro-gas column assisted laser induced breakdown spectroscopy (MGC-LIBS): A metal elements detection method for bulk water in-situ analysis

This manuscript introduces a newly developed method for in situ analysis of bulk water samples, called micro-gas column assisted LIBS (MGC-LIBS). A specially designed MGC assistance system was employed to generate a 1.28 mm diameter stable micro-gas column in situ underwater and laser pulses were focused on the gas-liquid interface of the column to improve LIBS spectral signal of metal elements in water sample. The detection experiments on metal elements in the solution showed that the intensity of ion line in the signal was enhanced by up to 14 times, and the signal RSD value was less than 1%. The detection limits (LOD) of Mg, Ca, Sr, Na, K and Li were all less than 1 mg/L. Compared with the results obtained by direct breakdown experiments in bulk water, the LODs of MGC-LIBS were significantly improved, in which the LOD of Mg element could be reduced by nearly 7.6 times. The concentration calibration curves of the above 6 elements were obtained in the possible concentration ranges of seawater samples, and quantitative inversion experiments were carried out. The results show that the estimated value using MGC-LIBS was basically consistent with the actual value, and the minimum error was 0.12%. This method is expected to be developed into an in situ, online, real-time and highly sensitive detection method for marine investigation or natural water environment monitoring.

Appraisal of pollution scenario, sources and public health risk of harmful metals in mine water of Barapukuria coal mine industry in Bangladesh

This study was conducted to assess the accumulation and sources of harmful metals and associated public health risk from the usage of underground mine water of Barapukuria coal mine in Bangladesh, keeping in mind the optimum reuse. Thirty underground mine water samples had been analyzed for assessing temperature, pH, EC, TC, DO, BOD, COD, Ca, K, S, Ti, Mn, V, Fe, Co, Ni, Cu, Zn, Br, Rb, Sr, and Pb. Numerous pollution evaluation and health risk assessment indices along with multivariate statistical tools were employed in this study to apprise the pollution scenario, controlling factors, and probable health risk. The chronic or persistent health risk of metals via oral and dermal exposure of adults and children was determined using the hazard quotient (HQ) and hazard index (HI). The results showed that the content of physicochemical parameters and potentially harmful elements in water samples was many folds higher than the national and international standards. The results of pollution evaluation indices indicate that coal seam-leached mine water is highly concentrated by potentially harmful metals and not suitable for drinking, agriculture, and aquatic lives. The correlation coefficients and multivariate analysis illustrate both the geological and anthropogenic factors controlling the variability of metals in mine water. Results of HQoral value suggest that V, Co, and Pb are significant health risk for adults and Mn, V, Co, Cu, and Pb are for children. Vanadium is found potential for dermal effects, and HIdermal value directs 33%, and 70% samples exceed the safe limit for adults and children, respectively. The HI value suggests that oral exposure to harmful metals creates more harm than dermal absorption, and children are more vulnerable than adults. It is anticipated that the outcomes of this study would deliver expedient insights to initiate necessary steps to minimize the public health risk by applying appropriate environmental protocols.

Results of a comprehensive study of water bioresources of lake Senezh

In the paper, preliminary results of hydrochemical, hydrobiological, parasitological and ichthyological investigations have been given, carried out on waters of the Lake Senezh in 2020 and compared with analogous works for 2004–2006. The ecosystem of the given water object is extremely understudied. In the size structure of fish species, caught in 2020, dynamics of a good reproduction potential could be noted. The condition factor of all fish species is very high. One can see a significant prevalence of females over males, excepting bream, in all fish groups studied. The water object investigated showed the 2,8 times MPC increase for iron in fish farming water bodies. Concentration of toxic elements in water samples and bottom sediments did not increase MPC for all other indices. The bacteriological water analysis showed insignificant increase of bacterial contamination at the area of the investigation station 6 only, what is most likely of the anthropogenic nature and is being a result of the littoral lake zone pollution. Parasitological analysis of the Senezh lake fishes indicates of o high level of their invasion. 11 parasites species were found in 3 fish species investigated, which were represented by 73% of trematodes at the metacercaria and maritas stage. The fish ergasiles problem, existed in this water body since 2005 and up to-date, continues. In zanders gills, parasitic Ergasilus sieboldin were found. The given work would be interesting for investigators who will study the Senezh lake as well as other water bodies of the Moscow area.

A Novel Online Hydride Generation Technique for the Simultaneous Determination of Ultra Trace Amounts of Hydride Forming Elements in Water Samples by Inductively Coupled Plasma Optical Emission Spectrometry

A simple and rapid online hydride generation technique based on ultrasonic nebulizer was applied for the first time for the simultaneous determination of trace amounts of As, Bi, Sb, Se and Te by inductively coupled plasma optical emission spectrometry. In this method, we used an ultrasonic nebulizer as a hydride generator and sample introducer simultaneously. An ultrasonic nebulizer was applied for the online hydride generation technique without using any device, such as a gas phase separator, which is mandatory in the classic hydride generation method. This technique improved method detection limit comparing to the traditional hydride generation system which is a necessity in the ultra-trace determination of hydride forming elements. The developed technique shows an improvement factor ranging from 56 to 450 times in detection limits in comparison to a concentric nebulizer. The obtained detection limits were well below the maximum concentration limit. The practical applicability of the developed method was examined using natural water samples.

Concentrations of Trace Elements in Daily Life Water Consumed in Angono, Rizal, Philippines

Objective. The present study aims to determine the concentrations of seven trace elements [chromium (Cr), arsenic (As), cadmium (Cd), cesium (Cs), lead (Pb), thorium (Th), and uranium (U)] in tap, well, spring, river, and lake waters in the town of Angono, Rizal in the Philippines, consumed for drinking, cooking, bathing, and washing. In the town of Angono, both of the tap and purified tap waters produced in the refilling station are consumed as the water for drinking.Methods. Water samples from six unpurified tap, six purified taps, 10 wells, two springs, two rivers, and one lake water were obtained in October 2015. Samples were analyzed using solution nebulization inductively coupled plasma mass spectrometry. Results were evaluated for health risks of the trace elements in the water samples using WHO guideline values. The provisional WHO guideline values are as follows: Cr: 50 µg/L, As: 10 µg/L, Cd: 3 µg/L, Pb: 10 µg/L, and U: 30 µg/L. That of Cs has not been proposed yet. The WHO guideline value for the naturally occurring radioactive isotope 232Th in drinking water is 1 Bq/L, which is equivalent to 250 μg/L.Results. The concentrations of the trace elements in the tap water samples were <0.5% of the WHO guideline values, except Cs and Cd, with those of Cd being ~9% of the WHO guideline value. Purified tap waters contained the seven trace elements in lower concentrations, with the exception of Pb, which may have been added in small amounts from equipment used for water purification. The concentrations of the trace elements in water samples from the wells and springs in Angono were more variable than those of the tap waters, and these were also below the WHO guideline values. The concentrations of Cs in all water samples were <0.3 µg/L. The trace-element concentrations of the waters from Angono River and Laguna Lake were almost the same as those of the well and spring waters. Conclusion. At present, the concentrations of trace elements in daily life water consumed in Angono are at safe levels.

Trace Element Contents of Groundwater and Surface Waters in the Lake Hazar Basin (Elazığ)

Bu çalışmada, Hazar Gölü Havzası’ndaki (Elazığ) yeraltı ve yüzey sularının iz element içeriklerinin belirlenmesi ve bu elementlerin insan sağlığı açısından değerlendirilmesi amaçlanmıştır. Bu amaçla, havza içindeki 51 farklı noktadan alınan su örneklerinde arsenik (As), kadmiyum (Cd), bakır (Cu), manganez (Mn), kurşun (Pb), çinko (Zn), nikel (Ni) ve krom (Cr) gibi iz elementlerin konsantrasyonları İndüktif Eşleşmiş Plazma-Kütle Spektrometresi (ICP-MS) kullanılarak analiz edilmiştir. Seçilen iz elementlerin su örneklerindeki en düşük ve en yüksek konsantrasyonları (ppb) As için 0.01–2.08; Cd için 0.01–0.15; Cu için 0.05–111.35; Mn için 0.06–311.44; Pb için 0.01–2.56; Zn için 1.73–896.11; Ni için 0.09–14.21 ve Cr için 0.05–3.39 olarak belirlenmiştir. Bu sonuçlara göre; bazı su örneklerinde Cu ve Mn konsantrasyonlarının içme suyu için önerilen standart değerlerin üzerinde olduğu bulunmuştur.

Assessment of trace metals contamination in sediment and surface water of quarry lakes from the abandoned Pb mine Zaida, High Moulouya-Morocco

Physicochemical properties and total content of potentially toxic metals (Pb, Zn, As, Cd and Cu) in sediment and surface water samples from the pit lakes of the abandoned Pb mine were determined to assess the contamination level, and to evaluate the impact of the past mining activities on their quality. The results of the metallic trace elements in water samples gave high concentrations especially for Pb, Cd and As, which makes these lakes unusable neither for irrigation nor for drinking water supply. In addition to some statistical analyses, the geoaccumulation index (Igeo), potential ecological risk $$(E_{\text{r}}^{\text{i}} )$$ , and other pollution indices were applied to assess pollution levels of sediments. The obtained values of Igeo and the comparison with the sediment quality guidelines reveals a high Pb contamination especially for the lakes located near next to the tailings. As for the $$E_{\text{r}}^{\text{i}}$$ , it shows an extreme contamination by As in some studied lakes. The correlation results showed that Pb and As are from different sources. In fact, the tailings could represent the most important source of Pb, while the As can be related to lithogenic or anthropogenic sources.

Selected Metal (Fe, Cu and Zn) Levels in Fish and Water at Abaya and Chamo Rift Valley Lakes

Samples of fish organs and water were collected from three sampling sites of Lakes Chamo and Abaya. A procedure consuming 12 mL mixture of HNO₃-H₂O₂ for gill, kidney, liver and 1:2.5 mL mixture of HNO₃-HCl for water samples for digestion of was developed. Concentrations of three metals in water and their accumulation in Tilapia (Oreochromis niloticus) and Barbus (Labeobarbus intermedius) fish species were determined using Flame Atomic Absorption Spectroscopy. Concentrations of metals in gills, kidney, liver and water varied (mg/kg): Zn 0.061-0.083, 0.047-0.076, 0.070-0.074, 0.011-0.024, respectively; Cu; 0.025-0.031, 0.028-0.043, 0.029-0.044, 0.023-0.092, respectively; Fe 2.934-3.583, 2.735-3.628, 0.809-2.723, 4.756-10.240, respectively. Most of the elements in water samples occurred below detection limit. The highest accumulations of iron (Fe) concentration were observed in liver and gill of Tilapia fish from Chamo Lake. Among the detected metals, zinc (Zn) showed the maximum bioaccumulation factor in both fish species from both lakes, while iron was the least bio accumulated metallic species. Using Pearson correlation, positive correlation was observed for the specific fish organ with water samples. There was no significant difference between the two lakes in accumulating trace metals however lake chamo had higher concentration.

Statistical study on distribution of multiple dissolved elements and a water quality assessment around a simulated stackable fly ash

This study reports the leaching and transport behaviors of sixteen elements in fly ash taken from coal-fired power plant stations. A total of 480 water samples were collected from 20 simulative monitoring wells at three different times. Concentrations of elements in water samples were detected to know the spatial variability of substance, contamination level and quality of groundwater around stackable fly ash. The results of the water quality index (WQI) indicate that the water around a stackable fly ash is unsuitable for drinking. Sixteen parameters (Al, As, B, Ba, Cd, Co, Cr, Cu, Fe, Mg, Mn, V, Pb, Sb, Ni and Zn) were analyzed using different multivariate statistical approaches to assess the origins of elements in groundwater around stackable fly ash, identified five factor types that accounted for 75.66% of the total variance. Based on drinking water guidelines, As, Sb, Pb, Al and Cd were the dominant contaminants in groundwater around stackable fly ash. The quality of fly ash were considered to contribute much of the Mn, V, Ba and Mg (Cd, Cr and Ni for leaching time; Sb and Pb for leaching intensity; Al and Fe for water depths; B for flow velocity). Co, Cu and Zn had natural and random origins from crustal materials and upper reaches. Cluster analysis (CA) was adopted to classify the 20 simulative monitoring wells into two groups of water pollution, high pollution and low pollution, reflecting influences from leaching solution and upper reaches activities, respectively. The results of Hazard quotient and index (HQ/HI) suggests that As, Sb, Cd, Pb, V and Cr are the largest contributors to health risks in monitoring sites around stackable fly ash.

Energy-Dispersive Total-Reflection Resonant Inelastic X-ray Scattering as a Tool for Elemental Speciation in Contaminated Water.

This work presents a state-of the-art analytical methodology, by which chemical state information on metallic elements is obtained for liquid samples in a fast and simple manner. This method overcomes limitations of conventional X-ray techniques, such as X-ray absorption spectroscopy, by applying resonant inelastic X-ray scattering under total reflection geometry (TRIXS). TRIXS is particularly applicable for the analysis of small quantity of liquid samples deposited on polished reflectors. This feature is relevant for the chemical speciation of metallic trace elements contained in water samples, since the degree of their toxicity depends crucially on the concentration of specific chemical species included. The analytical merits of the proposed methodology were studied at Elettra Sincrotrone Trieste and at the Brazilian Synchrotron Light Laboratory. Contaminated water samples with low concentration of different chromium and manganese compounds were measured. Results prove the analytical potential of the TRIXS technique in characterizing different chemical species of metallic elements in water samples.

The Physico-Chemical Analysis of Water Sample from Fish Pond, Department of Animal Production Technology, Ramat Polytechnic, Maiduguri, Borno State, Nigeria

The determination of physico-chemical parameters in water sample collected from fish pond, Department of Animal Production Technology, Ramat Polytechnic, Maiduguri was conducted in June 2016. Water samples were collected at four locations established in the fish pond and homogenized to form a representative sample, then analysed using standard procedures. The metal elements of Ca, Cu, Cd, Cr, Mn, Ni, Pb and Zn of the water samples were determined by Flame Atomic Absorption Spectrophotometer. The physical parameters pH, temperature and dissolved oxygen were also determined using standard procedures. The concentration levels of metal elements in water sample were: Ca (43.40)mg/l, Cu (0.48)mg/l, Cd (0.30)mg/l, Cr (0.39)mg/l, Mn (0.11)mg/l, Ni (1.48)mg/l, Pb (0.50)mg/l and Zn (0.70)mg/l while physical parameters temperature was 28oC, pH was 6.9 and dissolved oxygen was 7.0mg/l. The results showed presence and concentration levels of all the parameters analysed. Most of the metals analysed were within the maximum levels set by WHO and NAFDAC, except Ni, Cr and Pb that exceeded the permissible limit set by WHO and NAFDAC. Keywords: Fish pond, Water sample, Metal elements, determination and FAAS.