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首页> 外文期刊>Environmental Science & Technology >Co-Existence of Organophosphate Di- and Tri-Esters in House Dust from South China and Midwestern United States: Implications for Human Exposure
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Co-Existence of Organophosphate Di- and Tri-Esters in House Dust from South China and Midwestern United States: Implications for Human Exposure

机译：来自中国南方和美国中西部的房屋尘土中有机磷酸酯二酯和三酯的共存：对人类暴露的影响

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摘要

Despite numerous studies on the contamination of organophosphate triesters (tri-OPEs) in indoor environments, organophosphate diesters (di-OPEs) have rarely been investigated. The present study aimed to investigate whether di-OPEs coexist with tri-OPEs in house dust collected from Guangzhou (n = 30), South China and the city of Carbondale (n = 17) located in the Midwestern United States (U.S.). Median concentrations of bis(2-butoxyethyl) phosphate (BBOEP), bis(1-chloro-2-propyl) phosphate (BCIPP), bis(1,3-dichloro-2-propyl) phosphate (BDCIPP), bis(2-ethylhexyl) phosphate (BEHP), bis(2-methyl-phenyl phosphate) (BMPP), and diphenyl phosphate (DPHP) were determined to be 15.9, LOQ, 33.6, 654, 9.5, and 605 ng/g in South China house dust, and 1580, 90.6, 234, 867, 4.0, and 6500 ng/g in Midwestern U.S. dust, respectively. The total concentrations of di-OPEs (referred to Sigma diOPEs) constituted an average of 22.9% and 21.3% of the total concentrations of tri-OPEs in dust from these two locations, respectively. Median concentration ratios of DPHP and BEHP to their respective tri-OPEs (i.e., TPHP and TEHP) were determined to be 1.1 and 1.0 in South China dust and 3.7 and 1.4 in Midwestern U.S. dust, respectively, indicating possible commercial applications for these two di-OPEs. Correlative analyses reveal chemical- and region-specific relationships between di-OPEs and their respective tri-OPEs, suggesting that the relative importance of different sources (e.g., direct commercial use, impurity in tri-OPE formulas, and tri-OPE degradation) could vary for different di-OPEs. Our findings demonstrate wide occurrences of di-OPEs in an indoor environment from the studied locations and raise concerns on human exposure to dust associated di-OPEs. Future studies are needed to explore more possible di-OPEs in indoor environments and elucidate their sources, human exposure pathways, and toxicokinetics.
机译：尽管对室内环境中的有机磷酸三酯（tri-OPEs）的污染进行了大量研究，但很少研究有机磷酸二酯（di-OPEs）。本研究旨在调查在来自美国中西部的广州（n = 30），华南地区和卡本代尔市（n = 17）收集的房屋灰尘中，di-OPEs是否与tri-OPEs共存。磷酸双（2-丁氧基乙基）酯（BBOEP），磷酸双（1-氯-2-丙基）酯（BCIPP），磷酸双（1,3-二氯-2-丙基）（BDCIPP），双（2-在华南地区，磷酸乙基己基酯（BEHP），双（2-甲基苯基磷酸酯）（BMPP）和磷酸二苯酯（DPHP）被确定为15.9，

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  • 来源
    《Environmental Science & Technology》 |2019年第9期|4784-4793|共10页
  • 作者

    Tan Hongli; Yang Liu; Yu Yunjiang; Guan Qingxia; Liu Xiaotu; Li Liangzhong; Chen Da;

  • 作者单位

    Jinan Univ, Sch Environm, Guangdong Key Lab Environm Pollut & Hlth, Guangzhou 510632, Guangdong, Peoples R China;

    Jinan Univ, Sch Environm, Guangdong Key Lab Environm Pollut & Hlth, Guangzhou 510632, Guangdong, Peoples R China;

    Minister Environm Protect, South China Inst Environm Sci, State Environm Protect Key Lab Environm Pollut Hl, Guangzhou 510655, Guangdong, Peoples R China;

    Jinan Univ, Sch Environm, Guangdong Key Lab Environm Pollut & Hlth, Guangzhou 510632, Guangdong, Peoples R China;

    Jinan Univ, Sch Environm, Guangdong Key Lab Environm Pollut & Hlth, Guangzhou 510632, Guangdong, Peoples R China;

    Minister Environm Protect, South China Inst Environm Sci, State Environm Protect Key Lab Environm Pollut Hl, Guangzhou 510655, Guangdong, Peoples R China;

    Jinan Univ, Sch Environm, Guangdong Key Lab Environm Pollut & Hlth, Guangzhou 510632, Guangdong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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