Journal
ENVIRONMENTAL POLLUTION
Volume 238, Issue -, Pages 326-335Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2018.02.078
Keywords
Short-chain chlorinated paraffins; Medium-chain chlorinated paraffins; Concentrations; Congener profiles; Polymeric products
Categories
Funding
- National Natural Science Foundation of China [21625702, 21777183, 21477141]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB14010400]
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Chlorinated paraffins (CPs) are widely used in domestic polymeric products as plasticizers and fire retardants. In this study, concentrations and congener profiles of short-chain and medium-chain chlorinated paraffins (SCCPs and MCCPs) were investigated in domestic polymeric products, including plastics, rubber and food packaging in China. The average concentrations of SCCPs in polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE) and food packaging were 234, 3968, 150 and 188 ng/g, respectively and the corresponding average concentrations of MCCPs in these samples were 37.4, 2537, 208 and 644 ng/g, respectively. The concentrations of CPs in rubber and polyvinylchloride (PVC) were significantly higher than in other matrices. The highest concentrations of SCCPs and MCCPs were found in a PVC cable sheath with 191 mg/g and 145 mg/g, respectively. Congener group profiles analysis indicated C-11- and C-13-congener groups were predominant in carbon homologues of SCCPs, and C-14-congener groups were predominant in MCCPs. High levels of SCCPs and MCCPs in domestic polymeric products implied that they might be a significant source to the environment and human exposure. (C) 2018 Published by Elsevier Ltd.
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