Carbon Chain Decomposition of Short Chain Chlorinated Paraffins Mediated by Pumpkin and Soybean Seedlings

Yanlin Li; Xingwang Hou; Weifang Chen; Jiyan Liu; Qunfang Zhou; Jerald L Schnoor; Guibin Jiang

doi:10.1021/acs.est.9b01215

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Carbon Chain Decomposition of Short Chain Chlorinated Paraffins Mediated by Pumpkin and Soybean Seedlings

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Carbon Chain Decomposition of Short Chain Chlorinated Paraffins Mediated by Pumpkin and Soybean Seedlings

Yanlin Li, Xingwang Hou, Weifang Chen, Jiyan Liu, Qunfang Zhou, Jerald L Schnoor and Guibin Jiang

Environmental science & technology, Vol.53(12), pp.6765-6772

06/18/2019

DOI: 10.1021/acs.est.9b01215

PMCID: PMC6931393

PMID: 31099560

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Abstract

Short chain chlorinated paraffins (SCCPs) are a group of complex emerging persistent organic pollutants. In this study, the uptake, translocation, and transformation of four constitutionally defined SCCP isomers were studied using whole pumpkin (Cucurbita maxima × C. moschata) and soybean (Glycine max L. Merrill) seedlings via hydroponic exposure. Results showed that the daughter SCCPs were C10Cl5–8 and C11–13Cl5–6. The metabolic transformation of all tested isomers included dechlorination and chlorine rearrangement. In addition, carbon chain decomposition products were found for isomers with trichlorinated carbon atoms (CCl3-groups) in both pumpkin and soybean seedlings. This study provides the first evidence of carbon chain decomposition of SCCPs in whole plants, and it suggests new metabolism pathways of SCCPs in the environment. The influence of carbon chain length and degree of chlorination of SCCPs on their fate and behavior within different plant species were also investigated. Bioaccumulation of SCCPs in pumpkin and soybean increased with increasing carbon chain length and degree of chlorination. In comparison, soybean translocated and degraded parent SCCPs faster and to a greater extent than pumpkin, but pumpkin accumulated parent SCCPs to a greater extent than soybean. After 10 days exposure, less than 4% of the initial mass of exposed chemicals remained in solution of exposure groups. The parent chemicals accumulated in roots ranging from 23.6% to 59.9% for pumpkin and 1.98% to 54.5% for soybean and in stems ranging from 0.7% to 3.81% for pumpkin and 0.50% to 2.54% for soybean. These results give new perspectives on the transport, transformation, and fate of SCCPs in the environment.

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Title: Subtitle: Carbon Chain Decomposition of Short Chain Chlorinated Paraffins Mediated by Pumpkin and Soybean Seedlings
Creators: Yanlin Li - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, Department of Civil and Environmental Engineering, University of Iowa, Iowa City, Iowa 52242, United States, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
Xingwang Hou - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
Weifang Chen - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
Jiyan Liu - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
Qunfang Zhou - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
Jerald L Schnoor - Department of Civil and Environmental Engineering, University of Iowa, Iowa City, Iowa 52242, United States
Guibin Jiang - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China, College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
Resource Type: Journal article
Publication Details: Environmental science & technology, Vol.53(12), pp.6765-6772
DOI: 10.1021/acs.est.9b01215
PMID: 31099560
PMCID: PMC6931393
NLM abbreviation: Environ Sci Technol
ISSN: 0013-936X
eISSN: 1520-5851
Grant note: DOI: 10.13039/100000066, name: National Institute of Environmental Health Sciences, award: P42ES013661; DOI: 10.13039/501100002855, name: Ministry of Science and Technology of the People's Republic of China, award: 2018YFC1800702; DOI: 10.13039/100008893, name: University of Iowa; DOI: 10.13039/501100001809, name: National Natural Science Foundation of China, award: 21677158, 21621064; DOI: 10.13039/501100002367, name: Chinese Academy of Sciences, award: XDB14010400
Language: English
Date published: 06/18/2019
Academic Unit: Civil and Environmental Engineering; Occupational and Environmental Health; IIHR--Hydroscience and Engineering; Iowa Superfund Research Program
Record Identifier: 9983997965402771

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