PMID- 17109925 OWN - NLM STAT- MEDLINE DCOM- 20070423 LR - 20181201 IS - 0045-6535 (Print) IS - 0045-6535 (Linking) VI - 67 IP - 3 DP - 2007 Mar TI - Vertical distributions of persistent organic pollutants (POPs) caused from organochlorine pesticides in a sediment core taken from Ariake bay, Japan. PG - 456-63 AB - Persistent organic pollutants (POPs) of organochlorine pesticides such as dichlorodiphenyl trichloroethane (DDTs) and its metabolites, hexachlorobenzene (HCB), heptachlor, chlordane compounds (CHLs), aldrin, dieldrin, endrin, mirex and isomers of hexachlorocyclohexane (HCHs), were analyzed in sediment cores collected from Ariake Bay, Japan. Although Chikugo River has the largest flow in Ariake Bay, the total concentration of POPs in surface sediment was found in St.3, mouth of the Yabe River, where that level was two times higher than St.1, mouth of the Chikugo River. It could be assumed that the potential source of POPs contamination is relatively close to this study area. Relatively high residue levels of HCB, HCHs and DDTs in sediment core were found during the period from 1967 to 1970. In this layer, the HCB concentration investigated in sediment cores of Ariake Bay was maximum, 2.6 ng g(-1) dry weight and higher than that of Tokyo Bay and subsequently detected in deeper sediment cores. The ratio of (DDD+DDE)/SigmaDDTs was high in top sediments (0-2 cm). Although there was a concentration of DDTs in the top sediment, it was noticed that DDT emission did not cause direct input of DDT recently. The HCHs determined in upper sediment cores might be originated from long-range accumulation in environment after dispersing of technical-grade HCH. Moreover, the CHLs, dieldrin and heptachlor concentrations were detected and recently increased in sediment core. POPs in sediment cores of Ariake Bay based on the possibility of PCP contamination during the early 1960s were reflected. FAU - Kim, Yun-Seok AU - Kim YS AD - National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, Ibaraki 305-8604, Japan. FAU - Eun, Heesoo AU - Eun H FAU - Katase, Takao AU - Katase T FAU - Fujiwara, Hideshi AU - Fujiwara H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20061115 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Environmental Pollutants) RN - 0 (Hydrocarbons, Chlorinated) RN - 0 (Pesticides) RN - 4Z87H0LKUY (Hexachlorobenzene) RN - 59NEE7PCAB (Hexachlorocyclohexane) RN - CIW5S16655 (DDT) SB - IM MH - DDT/analysis MH - Environmental Pollutants/*analysis MH - Geologic Sediments/*chemistry MH - Hexachlorobenzene/analysis MH - Hexachlorocyclohexane/analysis MH - Hydrocarbons, Chlorinated/*analysis MH - Japan MH - Pesticides/*analysis MH - Seawater/chemistry EDAT- 2006/11/18 09:00 MHDA- 2007/04/24 09:00 CRDT- 2006/11/18 09:00 PHST- 2006/04/11 00:00 [received] PHST- 2006/08/10 00:00 [revised] PHST- 2006/09/24 00:00 [accepted] PHST- 2006/11/18 09:00 [pubmed] PHST- 2007/04/24 09:00 [medline] PHST- 2006/11/18 09:00 [entrez] AID - S0045-6535(06)01296-3 [pii] AID - 10.1016/j.chemosphere.2006.09.063 [doi] PST - ppublish SO - Chemosphere. 2007 Mar;67(3):456-63. doi: 10.1016/j.chemosphere.2006.09.063. Epub 2006 Nov 15.