PMID- 27037886 OWN - NLM STAT- MEDLINE DCOM- 20170612 LR - 20181202 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 557-558 DP - 2016 Jul 1 TI - Short-chain chlorinated paraffins in the soils of two different Chinese cities: Occurrence, homologue patterns and vertical migration. PG - 644-51 LID - S0048-9697(16)30525-3 [pii] LID - 10.1016/j.scitotenv.2016.03.101 [doi] AB - Short-chain chlorinated paraffins (SCCPs) are candidate persistent organic pollutants (POPs) that are under review by the Stockholm Convention. China is currently the largest producer and consumer of chlorinated paraffins (CPs). To study the environmental behavior and fate of SCCPs in the soils of urban and suburban regions, the SCCP concentrations in 88 topsoils and 15 soil columns from land of different use types (e.g., woodland, vegetable field, paddy field and greenbelt) from Guangzhou and Chengdu have been determined. The SCCP concentrations in topsoils from Guangzhou (range: 1.45-25.5ngg(-1) dry weight (dw), average: 10.3ngg(-1) dw) were much higher than those from Chengdu (range: 0.218-3.26ngg(-1) dw, average: 1.43ngg(-1) dw). When compared to previously reported SCCP levels for topsoils from other areas, the SCCP concentrations measured in the present work were quite low. Much higher SCCP concentrations were observed in the greenbelt topsoils from Chengdu relative to the values measured from woodlands and vegetable and paddy fields. The composition profiles suggest that C10Cl6-10 and C11-13Cl6-8 were the major groups of SCCPs in topsoils from the woodlands and vegetable and paddy fields in Guangzhou and Chengdu. Vertical variations of the SCCP concentrations in the soil columns suggest that less chlorinated SCCPs (Cl5-6-SCCPs) are more capable of migrating to the deeper-layer soils than more chlorinated ones (Cl9-10-SCCPs). The SCCP concentrations displayed little dependence on organic matter (OM) for most topsoils (p>0.05), indicating that OM is not the controlling factor in the distribution of SCCPs in the soils. CAPSULE: This study analyzed the occurrence, homologue patterns and vertical migration of SCCPs in the topsoils of two Chinese cities with different industrial structures and climate conditions. CI - Copyright (c) 2016 Elsevier B.V. All rights reserved. FAU - Huang, Yumei AU - Huang Y AD - Urban Environment and Ecology Research Center, South China Institute of Environmental Sciences (SCIES), Ministry of Environmental Protection, Guangzhou 510655, China; School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China. FAU - Chen, Laiguo AU - Chen L AD - Urban Environment and Ecology Research Center, South China Institute of Environmental Sciences (SCIES), Ministry of Environmental Protection, Guangzhou 510655, China; College of Resource and Environment, Chengdu University of Information Technology, Chengdu 610225, China. FAU - Feng, Yongbin AU - Feng Y AD - Urban Environment and Ecology Research Center, South China Institute of Environmental Sciences (SCIES), Ministry of Environmental Protection, Guangzhou 510655, China; College of Resource and Environment, Chengdu University of Information Technology, Chengdu 610225, China. FAU - Ye, Zhixiang AU - Ye Z AD - College of Resource and Environment, Chengdu University of Information Technology, Chengdu 610225, China. FAU - He, Qiusheng AU - He Q AD - School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan 030024, China. FAU - Feng, Qianhua AU - Feng Q AD - Urban Environment and Ecology Research Center, South China Institute of Environmental Sciences (SCIES), Ministry of Environmental Protection, Guangzhou 510655, China. FAU - Qing, Xian AU - Qing X AD - Urban Environment and Ecology Research Center, South China Institute of Environmental Sciences (SCIES), Ministry of Environmental Protection, Guangzhou 510655, China. FAU - Liu, Ming AU - Liu M AD - Urban Environment and Ecology Research Center, South China Institute of Environmental Sciences (SCIES), Ministry of Environmental Protection, Guangzhou 510655, China. FAU - Gao, Bo AU - Gao B AD - Urban Environment and Ecology Research Center, South China Institute of Environmental Sciences (SCIES), Ministry of Environmental Protection, Guangzhou 510655, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160331 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Soil) RN - 0 (Soil Pollutants) RN - 8002-74-2 (Paraffin) SB - IM MH - China MH - Cities/statistics & numerical data MH - *Environmental Monitoring MH - Paraffin/*analysis MH - Soil/*chemistry MH - Soil Pollutants/*analysis OTO - NOTNLM OT - *Composition profile OT - *Organic matter OT - *Short-chain chlorinated paraffins (SCCPs) OT - *Soil OT - *Vertical variation EDAT- 2016/04/03 06:00 MHDA- 2017/11/18 06:00 CRDT- 2016/04/03 06:00 PHST- 2015/12/06 00:00 [received] PHST- 2016/03/15 00:00 [revised] PHST- 2016/03/15 00:00 [accepted] PHST- 2016/04/03 06:00 [entrez] PHST- 2016/04/03 06:00 [pubmed] PHST- 2017/11/18 06:00 [medline] AID - S0048-9697(16)30525-3 [pii] AID - 10.1016/j.scitotenv.2016.03.101 [doi] PST - ppublish SO - Sci Total Environ. 2016 Jul 1;557-558:644-51. doi: 10.1016/j.scitotenv.2016.03.101. Epub 2016 Mar 31.