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Congener-specific C_(10)-C_(13) and C_(14)-C_(17) chlorinated paraffins in Chinese agricultural soils: Spatio-vertical distribution, homologue pattern and environmental behavior

Aamir, Muhammad and Yin, Shanshan and Zhou, Yuting and Xu, Chenye and Liu, Kai and Liu, Weiping (2019) Congener-specific C_(10)-C_(13) and C_(14)-C_(17) chlorinated paraffins in Chinese agricultural soils: Spatio-vertical distribution, homologue pattern and environmental behavior. Environmental Pollution, 245 . pp. 789-798. ISSN 0269-7491. https://resolver.caltech.edu/CaltechAUTHORS:20181121-095707347

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Abstract

A comprehensive spatio-vertical survey of short-chain (SCCPs, C_(10-13)) and medium-chain (MCCPs, C_(14-17)) chlorinated paraffins (CPs) was performed in surface and core soils from Chinese nation-wide agricultural lands in 2016, and a total of 48 congener groups were measured. The shorter carbon chain C_(10-11) in SCCP and C_(14-15) in MCCP homologue groups, and the lower chlorinated congeners (Cl_(5-7)) for both CP groups were predominant. The ∑SCCP and ∑MCCP concentrations in surface soils ranged from 39 to 1609 ng/g and 127–1969 ng/g, dry weight (dw), respectively. The spatial distribution trend showed that SCCP congener groups with relatively low octanol-water partition coefficient (K_(OW)) and octanol-air partition coefficient (K_(OA)) are uniformly distributed across surface soils compared to MCCP congener groups. Significant relationships were observed between the spatial variation of SCCP concentrations and the driving factors responsible for dispersion and deposition. The distribution behavior of SCCPs and MCCPs in highland and plain surface soils showed an increasing trend of MCCP concentrations with elevation, indicating the “mountain cold-trapping effect”. Vertical distribution profile revealed similar homologue group composition patterns of SCCP and MCCP congener groups as those of surface soils. Furthermore, the penetration potential ratios (r) of chlorine and carbon atoms of CPs demonstrated that the lower chlorinated (Cl_(5-7)) and the shorter carbon chain (C_(10-13)) congener groups are more prone to vertical movement into deeper soil layers compared to the longer carbon chain (C_(14-17)) and highly chlorinated (Cl_(8-10)) congener groups.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.envpol.2018.10.132DOIArticle
ORCID:
AuthorORCID
Aamir, Muhammad0000-0003-0579-5757
Yin, Shanshan0000-0001-8859-9852
Liu, Kai0000-0002-2109-8196
Liu, Weiping0000-0002-1173-892X
Alternate Title:Congener-specific C10-C13 and C14-C17 chlorinated paraffins in Chinese agricultural soils: Spatio-vertical distribution, homologue pattern and environmental behavior
Additional Information:© 2018 Published by Elsevier Ltd. Received 4 July 2018, Revised 18 October 2018, Accepted 30 October 2018, Available online 21 November 2018.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China21777137
National Natural Science Foundation of China21320102007
Creative Research Group fund21621005
Subject Keywords:Chlorinated paraffins; Spatio-vertical distribution; Homologue pattern; Environmental behavior; Agricultural soil
Record Number:CaltechAUTHORS:20181121-095707347
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181121-095707347
Official Citation:Muhammad Aamir, Shanshan Yin, Yuting Zhou, Chenye Xu, Kai Liu, Weiping Liu, Congener-specific C10C13 and C14C17 chlorinated paraffins in Chinese agricultural soils: Spatio-vertical distribution, homologue pattern and environmental behavior, Environmental Pollution, Volume 245, 2019, Pages 789-798, ISSN 0269-7491, https://doi.org/10.1016/j.envpol.2018.10.132. (http://www.sciencedirect.com/science/article/pii/S0269749118330756)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91131
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:21 Nov 2018 18:08
Last Modified:03 Oct 2019 20:32

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