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东江表层沉积物中的有机磷系阻燃剂
引用本文:阮伟,谭晓欣,罗孝俊,麦碧娴.东江表层沉积物中的有机磷系阻燃剂[J].中国环境科学,2014,34(9):2394-2400.
作者姓名:阮伟  谭晓欣  罗孝俊  麦碧娴
作者单位:1. 中国科学院广州地球化学研究所,有机地球化学国家重点实验室,广东 广州 510640; 中国科学院大学,北京 100049
2. 中国科学院广州地球化学研究所,有机地球化学国家重点实验室,广东 广州 510640
基金项目:环境保护部公益项目,国家自然科学基金
摘    要:采用索氏抽提,HLB固相萃取柱分离净化和气相色谱质谱联用仪(GC-MS-EI/SIM)的分析方法对采自东江的17个沉积物中的8种有机磷系阻燃剂(OPFRs)的浓度及分布进行研究.结果表明,所有样品中均检测到了OPFRs,其总浓度为1.52~86.17ng/g.三(1-氯-2-丙基)磷酸酯(TCPP)为最主要污染物,最高浓度达51.64ng/g,其后为三苯基磷酸酯(TPP)、三(2-氯乙基)磷酸酯(TCEP)、三(1,3-二氯异丙基)磷酸酯(TDCP),最高浓度分别为22.03,9.51,6.09ng/g,而其他烷基类OPFRs除三乙基磷酸酯(TEP)外未被检出.OPFRs总浓度和与总有机碳(TOC)存在极显著的相关性(r=0.74,P<0.001),说明沉积物中TOC的含量对有机氯代磷系阻燃剂的分布起重要作用.尽管东江沉积物中的OPFRs含量(均值25.43ng/g)远低于多溴联苯醚(PBDEs)含量(均值588ng/g),但随着PBDEs的全球禁用,相关有机磷系阻燃剂的污染态势需要引起更多关注.

关 键 词:有机磷系阻燃剂  沉积物  东江  

Organophosphorus flame retardants in surface sediments from Dongjiang River
RUAN Wei,TAN Xiao-xin,LUO Xiao-jun,MAI Bi-xian.Organophosphorus flame retardants in surface sediments from Dongjiang River[J].China Environmental Science,2014,34(9):2394-2400.
Authors:RUAN Wei  TAN Xiao-xin  LUO Xiao-jun  MAI Bi-xian
Abstract:Levels and distributions of eight organophosphorus flame retardants (OPFRs) in 17 sediment samples collected from Dongjiang River were investigated. The analytes were Soxhlet extracted, enriched using HLB solid-phase extraction, and determined by gas chromatography-mass spectrometry. OPFRs were detected in all the sediments at concentrations ranging from 1.52~6.17ng/g. Tris (2-chloroiso-propyl) phosphate (TCPP) was the dominant compound, the highest concentration was 51.64ng/g, followed by TPP, TCEP and TDCP with highest concentrations 22.03,9.51 and 6.09ng/g, respectively. The other alkyled OPFRs were not detected, with the exception of triethyl phosphate (TEP). Highly significant correlation(r=0.74,P<0.001) between the concentrations of OPFRs and total organic carbon (TOC) was observed, indicating that TOC play a key role in determination of chlorinated OPFRs levels in the sediments. Although the total concentrations of the assessed OPFRs (average value of 25.43ng/g) were much lower than those of PBDEs (average value of 588ng/g), more environment concerns should be given for these emerging pollutants with the ban of the PBDEs in the worldwide.
Keywords:organophosphorus flame retardants  sediments  Dongjiang River
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