Quantitation of Polycyclic Aromatic Hydrocarbons and Organochlorine Pesticides in Surface Waters

Tereshchenko, N. Yu.; Khyzhan, O. I.; Maksin, Viktor; Ковшун, Л. О.

doi:10.3103/s1063455x20040153

Cited by 4 publications

(7 citation statements)

References 8 publications

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“…“the initial oven temperature was 80 °C, which was maintained for 1 min, then raised to 160 °C at a rate of 30 °C/min, maintained for 1 min, and finally raised to 265 °C at a rate of 3 °C/min and maintained for 1 min” [ 124 ] Water 24 MDL: 0.00001 to 0.00002 Spike mean: 66; surrogate mean: 92 <20 GC-MS; GC-ECD [ 99 ] Water 8 0.0024–0.0462 77.7–106.3 GC-MS: “oven temperature program began at 100 °C (held for 0.5 min) and was raised to 175 °C at 40 °C·min −1 (held for 2 min), before ramping to 190 °C at 5 °C·min −1 . It was then further increased to 205 °C at 20 °C·min −1 ” [ 125 ] Surface water 13 MDLs: 0.000022–0.000069 Surrogate: 80–110 1.50–5.54 GC-ECD: “initially at 80 °C (equilibrium time 1 min), increased to 150 °C at the rate of 20 °C/min and held for 2 min, before reaching at 300 °C at the rate of 5 °C/min, and then held for 5 min” [ 126 ] Surface water 9 0.000002–0.00003 0.000003–0.000061 Int std: 72-93 <1.8 GC-MSD: “The column temperature was initially held at 50 °C for 1 min, then increased to 160 °C at 7 °C/min and finally increased to 240 °C at 10 °C/min, and was held for 18 min” [ 127 ] Surface water 14 Water: 100; SM: 0.1 92–120 GC-MS [ 128 ] Water lake 20 MDL: 2.81 e−6-1.58e-4 MQL: 2.81e-06-0.000158 1.4–11.9 …”

Section: Results and Discussion: Literature Reviewmentioning

confidence: 99%

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Ohoro,

Wepener

2023

Heliyon

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Section: Results and Discussion: Literature Reviewmentioning

confidence: 99%

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Ohoro,

Wepener

2023

Heliyon

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“…At the preparatory stage of creating a new laboratory control methodology, it is necessary to assess the possibility of extracting target analytes from the sample (Tereshchenko et al, 2020), and, considering potential sources of contamination and the results of literature research, to create an expanded list of contaminants (Lopez et al, 2015;Pinasseau et al, 2023). The study of lipophilic xenobiotics in natural water samples is complicated by the presence of suspended particles that can be adsorbed by analytes ( Milyukin & Gorban, 2021).…”

Section: Resultsmentioning

confidence: 99%

“…Reference data on the physical and chemical properties of these xenobiotic molecules were collected from the ChemDraw library. Suspended solids were extracted from water samples according to the vacuum filtration method developed and tested in our previous studies using nylon membrane filters (Tereshchenko et al, 2020). The gravimetric analysis was performed using a KERN analytical balance of the first accuracy class (division value of 0.0001 g).…”

Section: Methodsmentioning

confidence: 99%

“…Atrazine and DDT are lipophilic xenobiotics that are absorbed by aquatic organisms in aquatic ecosystems and adsorbed to suspended particles of sand, clay, silt, plankton, and plant decomposition products. The component composition of not only the extracts obtained from water, but the sediment removed during the preparation of a laboratory water sample is also under investigation (Tereshchenko et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Methodology for determining the residual content of active ingredients of agrochemicals in surface waters

Tereshchenko,

Khyzhan,

Bobunov

et al. 2023

Rosl. g̀runtozn.

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Agricultural water bodies are multifunctional objects in the agricultural production cycle. Residual amounts of the active ingredients of pesticide agrochemicals can enter and contaminate a water body during some agro-technological tasks. The purpose of this study was to investigate the conditions for the extraction of residual amounts of xenobiotics from surface water containing suspended particles and to measure their content by chromatographic methods. To determine the optimal conditions for the extraction of target xenobiotics, the values of the lipophilicity parameters of their molecules were considered. The methodology for determining the content of lipophilic xenobiotics by chromatographic methods with mass-selective detection in surface water samples includes a step of separating suspended particles, the content of which in the samples under study was controlled by gravimetric analysis and varied within 135-1500 mg/m3. The target compounds were extracted using n-hexane and acetonitrile. The analytes in the acetonitrile concentrate were determined according to high-performance liquid and gas chromatography with mass-selective detectors (HPLC/MS/MS and GC/MS). The achieved limit of detection of xenobiotics was 0.02 µg/m3, the limit of quantification of xenobiotics was 0.10 µg/m3. To substantiate the possibility of applying the proposed methodology, the following indicators were investigated: linearity of analytical signals with the amount of analytes in the solution, correctness, convergence, and accuracy of measurement results. The linear concentration range of the method for the determination of xenobiotics of diverse groups is 0.10-1.00 µg/m3, characterised by a regression coefficient of the linear dependence of the measurement of individual compounds (R2) exceeding 0.99. The degree of analytes recovery (percentage of recovery r, %) was within 85-120%, which indicates the acceptability of the proposed xenobiotic extraction procedure. The error of the measurement results was calculated as the standard deviation (Sr, %), which did not exceed 6%. The findings of this study suggested that the developed methodology is suitable for monitoring the residual content of active ingredients of agrochemicals in surface waters and predicting the level of water pollution

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Section: Introductionmentioning

confidence: 99%

Untitled

2023

Rosl. g̀runtozn.

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samples were analysed for humus content according to DSTU 4289:2004 and labile organic matter content according to DSTU 4732:2007. When chernozems are ploughed up, labile organic matter is mineralised the most and their share in humus decreases, while when arable land is converted to fallow land, it is restored the fastest. Minimising tillage systems and applying organic and mineral fertilisers increases the amount of labile organic matter in the humus of chernozems. The use of notill for sixteen years resulted in a 0.13% increase in humus content, and a 0.53% increase over fortytwo years compared to ploughing. The application of organo-mineral fertiliser increased the ratio of labile organic matter carbon content to total carbon content compared to the unfertilised variants. A strong correlation was found between the content of labile organic matter in chernozems and the yield of winter wheat and maize. The practical significance of the research results is to minimise the fertiliser rate and the C:N ratio to ensure gross crop yields and restore soil fertility

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Quantitation of Polycyclic Aromatic Hydrocarbons and Organochlorine Pesticides in Surface Waters

Cited by 4 publications

References 8 publications

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

Methodology for determining the residual content of active ingredients of agrochemicals in surface waters

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