Determination of organochlorine pesticide residues in water, sediment, and fish samples from the Meriç Delta, Turkey

Erkmen, Belda; Kolankaya, Dürdane

doi:10.1080/03067310500247926

Cited by 45 publications

(40 citation statements)

References 14 publications

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“…HCH residues at many of the sites have percolated into the soil and thence contaminated groundwater (145). Residues of HCH isomers have now been reported for many countries in samples of air (76,79,138), water (8,71,139), soil (29,50,71,139,144), food commodities (7,17,175,184), milk (153,197), fish (44,87), and mammals (48) and even from human blood samples (15,169) and adipose tissue (14,73). Environmental residues from sites as remote from the major regions of production and use as the Arctic, Antarctic, and Pacific Ocean have been reported (63,185).…”

Section: Fig 2 Known Locations Of Hch Dumps In Excess Ofmentioning

confidence: 99%

Biochemistry of Microbial Degradation of Hexachlorocyclohexane and Prospects for Bioremediation

Lal

Pandey

Sharma

et al. 2010

Microbiol Mol Biol Rev

349

338

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SUMMARY Lindane, the γ-isomer of hexachlorocyclohexane (HCH), is a potent insecticide. Purified lindane or unpurified mixtures of this and α-, β-, and δ-isomers of HCH were widely used as commercial insecticides in the last half of the 20th century. Large dumps of unused HCH isomers now constitute a major hazard because of their long residence times in soil and high nontarget toxicities. The major pathway for the aerobic degradation of HCH isomers in soil is the Lin pathway, and variants of this pathway will degrade all four of the HCH isomers although only slowly. Sequence differences in the primary LinA and LinB enzymes in the pathway play a key role in determining their ability to degrade the different isomers. LinA is a dehydrochlorinase, but little is known of its biochemistry. LinB is a hydrolytic dechlorinase that has been heterologously expressed and crystallized, and there is some understanding of the sequence-structure-function relationships underlying its substrate specificity and kinetics, although there are also some significant anomalies. The kinetics of some LinB variants are reported to be slow even for their preferred isomers. It is important to develop a better understanding of the biochemistries of the LinA and LinB variants and to use that knowledge to build better variants, because field trials of some bioremediation strategies based on the Lin pathway have yielded promising results but would not yet achieve economic levels of remediation.

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Section: Fig 2 Known Locations Of Hch Dumps In Excess Ofmentioning

confidence: 99%

Biochemistry of Microbial Degradation of Hexachlorocyclohexane and Prospects for Bioremediation

Lal

Pandey

Sharma

et al. 2010

Microbiol Mol Biol Rev

349

338

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“…Key words: lake sediments, PCBs, DDTs, HCHs photolytic degradation, their ease of bioaccumulation in living organisms, and the possibility of biomagnification in the trophic chain (Strandberg et al 2000;Henny et al 2003;Nfon et al 2008;Erkmen et al 2013). Although their production and use have been abandoned in most countries, they are widespread in the environment and their presence is recognised in sediments of many lakes (Erkmen et al 2013;Bettinetti et al 2011;Hu et al 2010;Jiao et al 2009;Jung et al 2008;Yuan et al 2013;Grimalt et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Assessment of DDT, HCH and PCB pollution of lake sediments in Poland

Bojakowska

Stasiuk

Wołkowicz

2014

Limnological Review

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In the years 2010-2013, 528 samples of surface sediments were collected from lake depths in the area of Poland. The content of 7 PCB congeners, HCH isomers and p,p’-DDT, p,p’-DDE and p,p’-DDD was determined using the GC-ECD method. The studies showed the common occurrence of organochlorine compounds in lake sediments in Poland. The presence of HCHs, at a concentration above the determination limit, was detected in 83.71% of samples, that of DDTs in 98.86% of samples, and of PCBs in 98.86% of samples. The maximum HCH concentration was 60.7 ng g-1, that of DDTs 602.9 ng g-1, and of PCBs 50.7 ng g-1, while the averages were 6.3 ng g-1, 19.2 ng g-1 and 2.8 ng g-1, respectively. High levels of DDTs are found in sediments of those lakes upon which major towns are located, whereas the highest HCH concentrations are observed in sediments of the lakes upon which holiday centres and agrotourism facilities have developed. The ratio of concentrations of total DDT metabolites to p,p’-DDT was above 2 in almost all samples, and the value was most frequently from several to tens (average 28.3). Sediments of some lakes contain higher concentrations of γ-HCH and DDT metabolites than their PEC values, the content of γ-HCH was higher in 1.89% of the analysed samples, the content of p,p’-DDE in 3.78% of the samples, and the content of p,p’-DDD in 7.38% of the samples. Concentrations of p,p’-DDT and PCB in excess of the PEC value were not found in any of the samples tested.

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“…Since pesticides have been commonly used and their half-time is rather long, their residues can now be found in every segment of the natural environment, including water (Tankiewicz et al 2010), soil (Aktar et al 2009), bottom sediments (Erkmen et al 2013), air (Zivana et al 2016), plants (Fantke et al 2011), and living organisms (Jayaraj et al 2016). Apart from their direct threat, the fact that pesticides reside in the environment, they can migrate within and between ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Studying of the interaction between peat humic acids and metazachlor using spectroscopy methods

et al. 2018

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Purpose The analysis covered the interaction of humic acids (HA) isolated from peats with the metazachlor using spectroscopic methods. Materials and methods Five peatlands have been selected for the study in the southern and northern parts of Poland. Extraction of humic acids (HA1, HA2, HA3, HA4, and HA5) was performed using a procedure recommended by the International Humic Substances Society. Metazachlor 500 SC with metazachlor as a biologically active substance [2-chloro-N-(pyrazol-1-ylmethyl)acet-2′,6′-xylidide] has been used. HA have been assessed on the basis of their elemental composition. Spectroscopic techniques have been used to study the HA structure and their interaction with metazachlor including: UVvisible spectroscopy, dynamic light scattering, and delayed luminescence (DL) Results and discussion Based on their morphological and chemical properties, the studied peat soils can be classified as follows: (1) Eutric Murshic Sapric Histosols, (2) Eutric Sapric Histosols, (3) Eutric Hemic Histosols, (4) Eutric Fibric Histosols, and (5) Dystric Dranic Hemic Histosols according to the WRB guidelines (2015). Results showed that the largest particle size, measured by E 4/6 coefficient, was found in HA2 sample, while the smallest in HA3 sample. The addition of metazachlor to HA solutions reduced the values of E 4/6 coefficient by 33 to 72%, while the values of hydrodynamic diameter by 4 to 32%. No significant changes were found between E 4/6 after adding of metazachlor to HA solutions. The largest changes in DL intensity, excited both by blue and red light after herbicide addition, were observed in HA2 sample, which is characterized by the largest particle size, the highest oxygen content and CQ value as well as the lowest Baromatization rate^value. Conclusions The particle sizes of HA molecules measured by E 4/6 coefficient do not impact on the particle sizes of HA-herbicide systems measured by the same ratio. The delayed luminescence may become valuable, because it is simple, fast, and sensitive. Additionally, the results show minor errors comparing with chemical methods. This method may provide information about structure and nature of humic acids, as well as their photoreactivity. The using of delayed luminescence in studies of HApesticides interaction may enable us to better understand the luminescence properties of HA.

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Determination of organochlorine pesticide residues in water, sediment, and fish samples from the Meriç Delta, Turkey

Cited by 45 publications

References 14 publications

Biochemistry of Microbial Degradation of Hexachlorocyclohexane and Prospects for Bioremediation

Biochemistry of Microbial Degradation of Hexachlorocyclohexane and Prospects for Bioremediation

Assessment of DDT, HCH and PCB pollution of lake sediments in Poland

Studying of the interaction between peat humic acids and metazachlor using spectroscopy methods

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