Vertical distributions of persistent organic pollutants (POPs) caused from organochlorine pesticides in a sediment core taken from Ariake bay, Japan

Kim, Yun-Seok; Eun, Heesoo; Katase, Takayoshi; Fujiwara, Hideshi

doi:10.1016/j.chemosphere.2006.09.063

Cited by 66 publications

(24 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Generally, technical DDT contains 80-85% p, p -DDT and 15-20% o, p -DDT (Gong et al 2007). DDT Kim et al (2007) could be biodegraded into DDE under aerobic conditions and to DDD under anaerobic conditions. The dominance of DDDs over DDEs in these sediments indicates the reductive dechlorination of DDTs to DDDs under anaerobic conditions (Barakat et al 2002), which may be attributed to the fact that Bohai Bay is a semiclosed bay with restricted water exchange with the open ocean.…”

Section: Characteristics Of Ocp Contamination In Surface Sedimentsmentioning

confidence: 99%

The distribution of organochlorine pesticides (OCPs) in surface sediments of Bohai Sea Bay, China

Liu

Song

et al. 2011

Environ Monit Assess

View full text Add to dashboard Cite

The residues of organochlorine pesticides (OCPs) in 19 surface sediments of Bohai Sea Bay were determined in this study. Total OCP concentration in surface sediment ranged from 9.01 to 18.04 ng/g dry weight, with a mean concentration of 12.50 ng/g. These findings are in the mid-range of pesticide concentrations compared to those reported in other regions worldwide. DDTs and HCHs were the predominant species. The α-HCH/β-HCH ratios and the predominant γ-HCH indicate that the technical HCH contamination was due mainly to historical usage, although there appeared to be a fresh input of lindane. The results from (DDD + DDE)/ΣDDTs and DDD/DDE calculations suggest that the usage of DDT in agricultural activities was not terminated, and the historical/fresh inputs of DDT in these areas could be more easily degraded into DDD under an anoxic condition. PCA implies that the recent usage of DDT could serve as important fresh input sources for OCPs.

show abstract

Section: Characteristics Of Ocp Contamination In Surface Sedimentsmentioning

confidence: 99%

The distribution of organochlorine pesticides (OCPs) in surface sediments of Bohai Sea Bay, China

Liu

Song

et al. 2011

Environ Monit Assess

View full text Add to dashboard Cite

show abstract

“…The ratio of DDD/ DDE is an indicator of the degradation pathways of DDT because DDE and DDD are, respectively, the aerobic and anaerobic degradation products of DDT (31). Thus, the first peak in ΣDDT levels corresponds to a high DDD/DDE ratio, indicating that degradation under anaerobic conditions most likely occurred in situ in the lake sediment after its maximum use around 1970, whereas the low DDD/DDE ratio corresponding to the second peak indicates that degradation of the precursor DDT was prevalent under the aerobic conditions operating on this secondary source of DDT (e.g., in subaerial soil), and these compounds were then remobilized before their deposition on the lake bottom (32).…”

mentioning

confidence: 99%

Long-term relationships among pesticide applications, mobility, and soil erosion in a vineyard watershed

Sabatier

Poulenard

Fanget

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

142

View full text Add to dashboard Cite

Significance A record of lake sediment spanning approximately 100 years allowed us to reconstruct the long-term succession of herbicide, fungicide, and insecticide treatments in a vineyard catchment in France. This record of pesticide deposition is consistent with the historical onset and banning of these chemical substances by French and European environmental agencies. We also present evidence of the effects of postemergence herbicides, such as glyphosate, on soil erosion and evidence of the release of banned remnant pesticides, such as dichlorodiphenyltrichloroethane (DDT), that are stored in vineyard soil back into the environment. These results indicate that the sink–source dynamics of pesticides, which are crucial in ecotoxicological risk assessment, should take into account the effects of a changing environment on pesticide storage.

show abstract

“…This observation is in agreement with data reported by Hu et al (2005), who analysed a preferential accumulation of a-HCH in three sediment cores from Bohai Bay. However, other analytical studies on HCH contamination in sediments revealed no clear trend (Kim et al 2007;Xue et al 2006). On the contrary, relative concentrations of b-HCH decreased with depth and time as expressed by decreasing b/c-ratios.…”

Section: Hch Related Molecular Indication For Biotic Transformationmentioning

confidence: 94%

HCH residues in point-source contaminated samples of the Teltow Canal in Berlin, Germany

Ricking

Schwarzbauer

2008

Environ Chem Lett

View full text Add to dashboard Cite

Contaminated groundwater and a riverine sediment core heavily affected by the same industrial point source were analysed for hexachlorocyclohexanes (HCH) and its degradation products. A detailed quantification by GC/MS revealed contamination levels up to 730 lg/L and 396 ng/g in sum for the water and sediment samples, respectively. The isomer pattern differed significantly in both compartments. The ground water samples were depleted in c-HCH, whereas a significant loss of a-HCH was evident in the sediments as compared to the technical composition. The data obtained revealed interesting insights into the transformation behaviour and fate of HCH mixtures in anaerobic environmental compartments. In the affected groundwater system an ongoing microbial degradation was pointed out by the identification of indicative anaerobic metabolites. On the contrary in the sedimentary system a high environmental stability or rather a hindered degradation was observed as indicated by unaltered concentration levels as compared to production rates as well as by the absence of metabolites. Interestingly, the environmental fate of HCH in subaquatic sediments as well as in anaerobic ground water differs highly in contrast to the behaviour in anaerobic soil or surface water systems. Further on, it has to be stated, that the knowledge about the long-term behaviour of HCH residues in sedimentary material under anaerobic conditions is rather limited so far.

show abstract

Vertical distributions of persistent organic pollutants (POPs) caused from organochlorine pesticides in a sediment core taken from Ariake bay, Japan

Cited by 66 publications

References 18 publications

The distribution of organochlorine pesticides (OCPs) in surface sediments of Bohai Sea Bay, China

The distribution of organochlorine pesticides (OCPs) in surface sediments of Bohai Sea Bay, China

Long-term relationships among pesticide applications, mobility, and soil erosion in a vineyard watershed

HCH residues in point-source contaminated samples of the Teltow Canal in Berlin, Germany

Contact Info

Product

Resources

About