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Ecotoxicology and Human Environmental Health
Mass fractions, congener group patterns, and placental transfer of shortand medium-chain chlorinated paraffins in paired maternal and cord serum. Lin Qiao, Lirong Gao, Minghui Zheng, Dan Xia, Jingguang Li, Lei Zhang, Yongning Wu, Runhua Wang, Lili Cui, and Chi Xu Environ. Sci. Technol., Just Accepted Manuscript • DOI: 10.1021/acs.est.8b02839 • Publication Date (Web): 03 Aug 2018 Downloaded from http://pubs.acs.org on August 7, 2018
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Environmental Science & Technology
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Mass fractions, congener group patterns, and placental
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transfer of short- and medium-chain chlorinated paraffins
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in paired maternal and cord serum
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Lin Qiao,†,‡ Lirong Gao,*,† Minghui Zheng,† Dan Xia,†,§ Jingguang Li,*,║ Lei Zhang,║ Yongning Wu,║ Runhua Wang,† Lili Cui,† and Chi Xu†,‡
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State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China ‡ University of Chinese Academy of Sciences, Beijing 100049, China § School of Space and Environment, Beihang University, Beijing 100083, China ║ Key Laboratory of Food Safety Risk Assessment, Ministry of Health and China National Center for Food Safety Risk Assessment, Beijing, 100021, China *Corresponding authors: Lirong Gao. Telephone: +86 10 6284 9356. E-mail:
[email protected]. Jingguang Li. Telephone: +86 10 6779 0051. E-mail:
[email protected].
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ACS Paragon Plus Environment
Environmental Science & Technology
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Abstract
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Multiple studies have demonstrated the occurrences of short-chain chlorinated paraffins (SCCPs) and medium-chain chlorinated paraffins (MCCPs) in environmental matrices, but human internal exposure to them has been studied rarely. Mass fractions and congener group patterns of SCCPs and MCCPs in paired maternal and cord serum were studied for the first time to investigate the placental transport mechanism and prenatal exposure risks of CPs. Samples were collected in Beijing, China and analyzed using two-dimensional gas chromatography coupled to time-of-flight mass spectrometry. SCCP and MCCP mass fractions in maternal serum were 21.7–373 and 3.76–31.8 ng/g ww, respectively. They were 8.51–107 and 1.33–12.9 ng/g ww respectively in cord serum. Significant positive correlation between SCCP and MCCP levels in maternal serum was found (p
