International Journal of Environmental Analytical Chemistry

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ISSN / EISSN : 0306-7319 / 1029-0397
Published by: Informa UK Limited (10.1080)
Total articles ≅ 5,971
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, Xie Dong, Daniel A. Ayejoto, , Muhammad Y. Sabo
International Journal of Environmental Analytical Chemistry pp 1-20; https://doi.org/10.1080/03067319.2022.2125309

Abstract:
Seasonal variations in surface water quality are essential for assessing temporal variations in wetlands pollution due to natural or anthropogenic inputs from both point and non-point sources. The goal of this study was to use established methodologies to estimate the water quality of the Tianfu National Wetland Park based on physicochemical features; sampling was done from eight monitoring locations throughout the wetland region in the summer of 2019 and winter of 2020. The water quality index (WQI) is calculated using the following parameters: Turbidity (NTU), Nitrate, Chlorophyll, TOC, DOC, COD, BOD, Chroma, Ammonium nitrogen, pH, Electric Conductivity, and Total Phosphorus. One-way ANOVA and Tukey’s pairwise comparisons with a 5% significance level were used to compare water quality parameters among the monitoring point’s data. T-test analysis was used to compare the parameters between summer 2019 and winter 2020 and the difference between the water inlet and the water outlet. Cluster analysis was done on the WQI results using Ward’s linkage approach. The analyses of variance (ANOVA) of data revealed statistically significant differences between points of sampling (p < 0.05). The paired t-test revealed significant differences in parameters between summer 2019 and winter 2020; however, all parameters in summer show higher values in the water inlet than water outlet. In winter, TOC, DOC, COD, BOD, Chroma, pH, and Electric Conductivity showed higher values than Turbidity (NTU), Nitrate, Chlorophyll, Ammonium Nitrogen, and Total Pospurus. In general, summer showed higher pollution than winter, and water inlets were more polluted than water outlets indicating that other factors may affect the water quality, such as vegetation cover, temperature, water level, and activities in the wetland during the seasons.
, Majid Azizi, Ramin Rezaee, Javad Asili, Gholamreza Karimi, John P. Giesy, Faegheh Farhadi, Amir Ali Salavati Nik, Giti Hassanpourfard
International Journal of Environmental Analytical Chemistry pp 1-26; https://doi.org/10.1080/03067319.2022.2118595

Abstract:
In the present study, we isolated linalool, geraniol, carvacrol, thymol, menthol and eugenol; synthesised their phenoxyacetic acid derivatives; and assessed their phytotoxic and genotoxic potentials against weeds and agricultural crops. Moreover, the fungicidal activity of both categories of compounds against 12 fungi was examined. Finally, using probabilistic assessment based on Risk Quotient (RQ) by the Monte Carlo simulation (MCS) method, we examined human health risks via oral exposure to these compounds. Toxic potencies to plants demonstrated that all parameters and related indices including germination percentage, mean germination time, germination rate, root length, shoot length, seedling length and vigour index dose-dependently decreased in both weeds and agricultural crops. Based on the comet assay, DNA damage was observed in the root meristems of the plants. Consequently, a significant decrease was observed in head DNA, whereas a significant increase in tail DNA was observed in response to treatments. Besides, the natural components and semisynthetic molecules showed a broad spectrum of fungicidal traits. However, eugenol and eugenoxyacetic acid inhibitory effects on the growth of the tested fungi were similar to that of benomyl. Our probabilistic health risk assessment indicated di minimis risk for natural components and their phenoxyacetic acid derivatives. Sensitivity analysis showed that concentrations of residues of the compounds had the most significant effect on risk. Current findings could offer a platform for developing sustainable approaches to reduce chemical residues and their consequent risks to the environment and human health.
Daniela R. Escudero, Andrea C. Isaguirre, , Paul Emir Hasuoka, ,
International Journal of Environmental Analytical Chemistry pp 1-12; https://doi.org/10.1080/03067319.2022.2130063

Abstract:
Atmospheric arsenic species adsorbed on pollen samples were extracted and determined by liquid chromatography coupled to inductively coupled plasma mass spectrometry (LC-ICP- MS). The optimised extraction method required acetone 1% (v v−1), 15 minutes ultrasonic bath and centrifugation. As (III) and As (V) concentrations ranged from 0.08 to 0.62 µg g−1, and from 0.33 to 0.89 µg g−1 respectively. The method reach a LOD and LOQ of 0.01 and 0.04 µg g−1 for As (III); and 0.01 and 0.06 µg g−1 for As (V), respectively analysing 0.05 g of pollen. Precision as relative standard deviation (RSD %) corresponded to 4.1% (n = 10). A standard addition method was performed for validation with quantitative As recoveries in a range of 81.39 to 104.81%. In order to define the As pollution source, a pre-pandemic and pandemic study was performed with significant variations in total As concentration in aerobiological samples, suggesting that traffic increases atmospheric As concentration.
, Man Seung Lee, Thanh Tuan Tran, Quoc Chau Thanh Nguyen
International Journal of Environmental Analytical Chemistry pp 1-13; https://doi.org/10.1080/03067319.2022.2130062

Abstract:
To find a novel resin to remove Co(II), the adsorption behaviour of Co(II) from the simulated acid leaching solution was investigated by ion exchange with AG®50W-X4 resin. Parameters such as reaction time, HCl concentration, and resin concentration affected the loading efficiency of Co(II) by AG®50W-X4 resin were tested. The adsorption behaviour of Co(II) strongly depended on HCl and resin concentration while reaction time was little effect on the loading percentage of Co. The loading behaviour of Co(II) into the resin fitted well with the Langmuir adsorption isotherm and the loading capacity for Co(II) was found at 29.8 mg/g. Moderate HCl solution was effective in eluting Co(II) from the loaded AG®50W-X4 resin. The obtained results investigated that AG®50W-X4 resin was a promising resin to absorb Co(II) from the low acid leaching solution of the spent lithium-ion mobile phone batteries.
Bayan Hassan,
International Journal of Environmental Analytical Chemistry pp 1-16; https://doi.org/10.1080/03067319.2022.2130066

Abstract:
Colour additives are commonly used in the food industry to improve product appearance and nutritional characteristics. However, effluent containing reactive dyes from food and textile dyeing industries is a substantial cause of pollution in the environment. Simple and ecofriendly trace analysis of two synthetic food azo dyes including fast green (FG) and erythrosine (ER) dyes from environmental water samples was developed by combining dispersive μ-solid-phase extraction with UV-Vis spectrophotometric detection. Zein biopolymeric nanoparticles (ZNPs) were used as a green sorbent for preconcentration of trace amounts of the mentioned food dyes. Based on the anti-solvent method, the ethanolic Zein solution (20 mg) was injected rapidly into the sample, and the ZNPs were produced. After centrifugation, the adsorbed dye was separated, and samples were analysed using a spectrophotometric technique. The impact of various extraction parameters, such as extraction time, adsorbent amount, surfactant type and concentration, ionic strength, pH of sample solution, and desorption conditions, was examined. Under optimised conditions, the linearity ranges were 0.005–1.2 and 0.01–2 µg mL−1 with correlation coefficient (r2) of 0.9970 and 0.9972 for FG and ER respectively. The method has good reproducibility, with relative standard deviations of less than 4.2% (n = 5) and detection limits of 2.5 and 6 ng mL−1 for both dyes respectively. The current approach was used to analyse three environmental water samples (river, canal, and well water), and the dyes recoveries were 94.0–102.6% and 95.7–101.7% for FG and ER respectively. The findings revealed that the proposed approach was convenient, fast, and effective.
, Yali Feng, Haoran Li
International Journal of Environmental Analytical Chemistry pp 1-15; https://doi.org/10.1080/03067319.2022.2128789

Abstract:
The idle mining or flotation decarburization of vanadium-bearing carbonaceous gold ores polluted the environment and wasted resources. In this paper, the volatilization behavior of calcined gold and the extraction kinetics of vanadium from calcined slag were analyzed to increase the high-value utilization efficiency of double refractory gold deposits. The results showed that the high-temperature chlorination efficiency of gold increased with the increase of calcium chloride dosage. At the same time, the oxidation effect of vanadium in roasting slag is also improved, which reduces the cost of extracting vanadium from roasting slag by acid. the vanadium leaching ratio of 83.3% when the calcium chloride amount of 10%, the roasting temperature of 1000℃, the roasting time of 240min, and the airflow rate of 1L/min, and the gold volatilization rate of 89.9%. The high-temperature chlorination reaction of gold and the acid leaching reaction of vanadium from calcined slag were also controlled by the interfacial chemical reaction. The apparent activation energy of the high-temperature chlorination of gold and the acid leaching of vanadium from calcined slag is calculated to be E = 71.61kJ/mol and 40.82kJ/mol, respectively. Suggested that gold recovery from vanadium-bearing carbonaceous gold ores was achieved using chlorination heat treatment. Also, the possibility of recovering vanadium from the roasting slag was verified by acid leaching experiments.
Mohamed Bouaissa, , Mohammad Ghalit, Jean Denis Taupin, Oualid Boukich, Jamal El Khattabi
International Journal of Environmental Analytical Chemistry pp 1-21; https://doi.org/10.1080/03067319.2022.2125308

Abstract:
In recent years, the sharp increase in nitrate concentration in groundwater has become an important health issue worldwide, and uncontrolled groundwater use can cause potentially dangerous problems for human health. The aim of the present study is to determine the degree of groundwater pollution in the Bokoya massif, located in the Moroccan Rif, and to quantify the non-cancer risks associated with its consumption. Two rounds of sampling were carried out during April and September 2018, respectively collecting 96 and 73 samples distributed between wells and springs covering the entire study area. The pollution index results showed that 39% and 41% of the studied springs possess a pollution degree ranging from moderate to very high during the wet and dry periods, respectively. Deterioration of the water quality is mainly linked to strong mineralisation from mineral dissolution of Palaeozoic and Predorsal rocks, and to the high concentrations of anthropogenic nitrates found in the limestone formation. The assessment of non-carcinogenic risk by oral exposure to nitrates showed that about 47%, 45% and 43% of the samples constitute non-carcinogenic risk to the health of children, adult women, and adult men, respectively. Children have a slightly higher exposure to non-carcinogenic risks. In a situation typified by both the scarcity of drinking water and a lack of population-wide information for the study area, the results of this study will help guide decision-makers and water resource management services towards a policy of limiting the sources of nitrates found in aquifers in order to limit the potentially harmful effects on human health.
Abdul Niefaizal Abdul Hammid, Ainie Kuntom,
International Journal of Environmental Analytical Chemistry pp 1-13; https://doi.org/10.1080/03067319.2022.2128788

Abstract:
Palm kernel cake (PKC) is a by-product of palm oil that is mainly used as animal feed. The tropical climate of Malaysia, along with high humidity, favours the growth of aflatoxin-producing fungi. PKC contamination with aflatoxins poses a serious food safety risk. The PKC samples were collected from selected palm kernel crushers in Malaysia between January 2015 and February 2018. A total of twenty-four samples (n = 24) were collected from Southern Peninsula Malaysia (10), Central Peninsula Malaysia (5), Northern Peninsula Malaysia (4) and East Malaysia (5). These samples were analysed for aflatoxins by solvent extraction and immunoaffinity clean-up, followed by determination using a high performance liquid chromatography (HPLC). Aflatoxins level in all samples were less than 5 µg kg−1, meeting the maximum allowed limit of 20 µg kg−1 set by the Food and Drug Administration (FDA) and the European Union (EU). The developed method of detecting aflatoxins as mentioned above was specific, easy, reliable and suitable for routine analysis of aflatoxins in animal feed.
Gokul Kannan T, , Suganya K, Bhuvaneswari K, , , Manikandan. S
International Journal of Environmental Analytical Chemistry pp 1-18; https://doi.org/10.1080/03067319.2022.2125315

Abstract:
The compounds in pharmaceutical and personal care products (PPCPs) that may be potential environmental pollutants include metformin and triclosan. The suitable method to estimate the presence of metformin (MET) and triclosan (TRI) in wastewater treatment facilities is developed and validated in this research study. This study aimed to quantify the MET and TRI in sewage through a liquid chromatograph – mass spectrometer (LC-MS 8040) by a Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) technique of sample preparation. In LC-MS 8040, the Milli-Q water and sewage were examined at three different concentrations (0.01, 0.02 and 0.03 mg L−1) of MET and TRI. The recoveries of MET in both the matrixes ranged between 88.10 to 116.10% whereas the recoveries were ranged from 86.70 to 116.30% for TRI (n = 7, RSD <10%). The respective limit of detection (LOD) and the limit of quantification (LOQ) for MET and TRI were 0.005 and 0.01 mg L−1. With the matrix effect of < 10% in sewage, the approach was shown to be very linear (R2 = 0.9969 for MET and R2 = 0.9939 for TRI) and reliable. The precision was also exemplary with the RSD value of < 10% (n = 6). This method accurately assessed MET (BDL to 0.0657 mg L−1) and TRI (BDL to 0.1833 mg L−1) concentrations in sewage samples of Ukkadam sewage treatment plant (USTP) and Tamil Nadu Agricultural University treatment plant (TSTP). This is a unique use of the QuEChERS method for calculating these two compounds from aqueous matrixes with substantially greater outputs (20–25 samples per day) than typical Solid Phase Extraction (SPE) procedures.
Jiancong Wang, Xiufeng Duan, Hanbing Du, , Hanhong Xu
International Journal of Environmental Analytical Chemistry pp 1-13; https://doi.org/10.1080/03067319.2022.2128796

Abstract:
Plastic pollution has become an urgent problem in the global environment due to its harmful influence on humans. In this study, the occurrence and distribution characteristics of plasticisers in aquatic environment in Guangzhou, China was investigated. A gas chromatography coupled with mass spectrometry (GC-MS) analytical method was optimised and verified for the determination of 3 plasticisers. A total of 21 water samples were collected from 6 sites, the results showed that 3 plasticisers were detected in most samples, among which the detection frequency of Erucamide was 100%. The total concentrations of plasticisers from different sites were in the range of 35.2 to 322.2 μg/L for water, with the arithmetic mean of 152.1 μg/L. Among all the sampling sites, Chebei River was the most polluted by plasticisers. The analysis of data on the spatial distribution of plasticisers showed that developed industrial business patterns and higher population densities were responsible for exacerbating plasticiser pollution and it also exhibited that the closer the connection between the water systems, the more the local water system was influenced by the surrounding aquatic environment. According to Pearson correlation analysis, the chloride content and pH of the aquatic environment can significantly affect the degree of plasticisers pollution in the water.
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