Occurrence and possible sources of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) along the Chao River, China

•DDTs, HCHs, HCB are the dominant OCPs and PCB-118 is the major PCB.•OCP level is higher in corn fields and orchards and lower in forests and grasslands.•OCPs in soil came from new use of lindane and old application of DDTs, HCB, etc.•PCBs primarily come from atmospheric deposition.•Proper managemen...

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Veröffentlicht in:Chemosphere (Oxford) 2014-11, Vol.114, p.136-143
Hauptverfasser: Yu, Yang, Li, Yingxia, Shen, Zhenyao, Yang, Zhifeng, Mo, Li, Kong, Yanhong, Lou, Inchio
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container_issue
container_start_page 136
container_title Chemosphere (Oxford)
container_volume 114
creator Yu, Yang
Li, Yingxia
Shen, Zhenyao
Yang, Zhifeng
Mo, Li
Kong, Yanhong
Lou, Inchio
description •DDTs, HCHs, HCB are the dominant OCPs and PCB-118 is the major PCB.•OCP level is higher in corn fields and orchards and lower in forests and grasslands.•OCPs in soil came from new use of lindane and old application of DDTs, HCB, etc.•PCBs primarily come from atmospheric deposition.•Proper management of lindane, DDTs, HCB is critical for the water resource quality. To analyze the possible influence of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) on Miyun Reservoir, 14 soil samples and 1 water sample were collected along the Chao River, which is the main upstream source of the reservoir. A total of 24 kinds of OCPs and 12 kinds of dioxin-like PCBs were measured. Results showed that the ∑OCPs concentration ranged from 0.8145 to 16.8524ngg−1, and the ∑PCBs ranged from 0.0039 to 0.0365ngg−1. Dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB) were the three dominant kinds of OCPs in this region, and the majority component of the PCBs was PCB-118 in both water and soil samples. The OCP ratios suggest that new inputs of lindane exist. DDTs mainly come from old technical inputs. HCHs might come from a new application of lindane, which highlights the importance of prohibited pesticide control. OCP concentrations were higher in corn fields and orchards and lower in forest lands and grasslands, which indicated that OCPs were very much influenced by human activities. The proportion of PCB components in this study area suggested that they mainly came from atmospheric deposition.
doi_str_mv 10.1016/j.chemosphere.2014.03.095
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To analyze the possible influence of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) on Miyun Reservoir, 14 soil samples and 1 water sample were collected along the Chao River, which is the main upstream source of the reservoir. A total of 24 kinds of OCPs and 12 kinds of dioxin-like PCBs were measured. Results showed that the ∑OCPs concentration ranged from 0.8145 to 16.8524ngg−1, and the ∑PCBs ranged from 0.0039 to 0.0365ngg−1. Dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB) were the three dominant kinds of OCPs in this region, and the majority component of the PCBs was PCB-118 in both water and soil samples. The OCP ratios suggest that new inputs of lindane exist. DDTs mainly come from old technical inputs. HCHs might come from a new application of lindane, which highlights the importance of prohibited pesticide control. OCP concentrations were higher in corn fields and orchards and lower in forest lands and grasslands, which indicated that OCPs were very much influenced by human activities. 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To analyze the possible influence of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) on Miyun Reservoir, 14 soil samples and 1 water sample were collected along the Chao River, which is the main upstream source of the reservoir. A total of 24 kinds of OCPs and 12 kinds of dioxin-like PCBs were measured. Results showed that the ∑OCPs concentration ranged from 0.8145 to 16.8524ngg−1, and the ∑PCBs ranged from 0.0039 to 0.0365ngg−1. Dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB) were the three dominant kinds of OCPs in this region, and the majority component of the PCBs was PCB-118 in both water and soil samples. The OCP ratios suggest that new inputs of lindane exist. DDTs mainly come from old technical inputs. HCHs might come from a new application of lindane, which highlights the importance of prohibited pesticide control. OCP concentrations were higher in corn fields and orchards and lower in forest lands and grasslands, which indicated that OCPs were very much influenced by human activities. 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To analyze the possible influence of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) on Miyun Reservoir, 14 soil samples and 1 water sample were collected along the Chao River, which is the main upstream source of the reservoir. A total of 24 kinds of OCPs and 12 kinds of dioxin-like PCBs were measured. Results showed that the ∑OCPs concentration ranged from 0.8145 to 16.8524ngg−1, and the ∑PCBs ranged from 0.0039 to 0.0365ngg−1. Dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB) were the three dominant kinds of OCPs in this region, and the majority component of the PCBs was PCB-118 in both water and soil samples. The OCP ratios suggest that new inputs of lindane exist. DDTs mainly come from old technical inputs. HCHs might come from a new application of lindane, which highlights the importance of prohibited pesticide control. OCP concentrations were higher in corn fields and orchards and lower in forest lands and grasslands, which indicated that OCPs were very much influenced by human activities. The proportion of PCB components in this study area suggested that they mainly came from atmospheric deposition.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>25113194</pmid><doi>10.1016/j.chemosphere.2014.03.095</doi><tpages>8</tpages></addata></record>
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subjects Agricultural soil
Applied sciences
Brackish
Chao River
Chaos theory
China
Continental surface waters
Deposition
Environmental Monitoring
Exact sciences and technology
Grasslands
Humans
Hydrocarbons, Chlorinated - analysis
Lindane
Miyun Reservoir
Natural water pollution
Organochlorine pesticides (OCPs)
Pesticides
Pesticides - analysis
Pollution
Pollution sources. Measurement results
Polychlorinated biphenyls
Polychlorinated biphenyls (PCBs)
Polychlorinated Biphenyls - analysis
Reservoirs
Rivers
Rivers - chemistry
Soil (material)
Soil - chemistry
Soil and sediments pollution
Soil Pollutants - analysis
Water Pollutants, Chemical - analysis
Water treatment and pollution
title Occurrence and possible sources of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) along the Chao River, China
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