Ecological Risk Assessment of HCH and DDT Residues in a Sediment Core from the Küçükçekmece Lagoon, Turkey

Bulletin of Environmental Contamination and Toxicology
Selma Ünlü, Bedri Alpar

Abstract

The residues of organochlorine pesticides (HCHs and DDTs) in a dated (137Cs and 210Pb) sediment core from the Küçükçekmece Lagoon, an urban lake at the southern entrance of the future Canal Istanbul Project, an artificial watercourse, were analyzed with the gas chromatograph equipped with electron capture detector (GC 63Ni-ECD). Concentrations of ∑HCH and ∑DDT along the core varied between 0.4 and 469.4 (average 51.4) ng g-1 dw, and between 0.5 and 72.0 (average 7.4) ng g-1 dw, respectively. α-HCH was the predominant isomer (98%) and followed by γ-isomer (2%). The highest concentrations of technical HCH were found in the sediments dated 1963-1972, whilst the DDT concentrations had their maximum around 1945. The highest concentrations of γ-HCH and p,p'-DDT exceeded probable-effect level values which can lead to frequently cause adverse effects on aquatic biota.

References

Feb 1, 1992·Bulletin of Environmental Contamination and Toxicology·R K Hitch, H R Day
May 3, 2000·Archives of Environmental Contamination and Toxicology·D D MacDonaldT A Berger
Jul 12, 2005·The Science of the Total Environment·Jonathan L BarberKevin C Jones
Dec 12, 2007·Reviews of Environmental Contamination and Toxicology·John E ThomasAbid All-Agely
Jul 8, 2010·Environmental Science & Technology·Luca NizzettoKevin C Jones
Feb 23, 2013·Environmental Science and Pollution Research International·Jian-yang GuoJohn P Giesy
Nov 5, 2013·Chemosphere·Hairong ChengXuewen Zhang

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Citations

Dec 8, 2019·International Journal of Environmental Research and Public Health·Yanhong LiTsung-Chow Su

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