地球与环境

文章摘要

太原市PM_2.5中有机磷阻燃剂初步研究:污染特征及季节变化

Concentration and Seasonal Variation of Organophosphorus Flame Retardant in PM_2.5 of Taiyuan City, China

投稿时间：2016-01-04 修订日期：2016-03-25

DOI：10.14050/j.cnki.1672-9250.2016.06.002

中文关键词: 有机磷阻燃剂;太原;大气细颗粒物;季节变化;后推气流轨迹

英文关键词: organophosphorus flame retardant;Taiyuan;PM_2.5;seasonal variation;back-trajectory of air mass

基金项目:国家科技支撑计划项目（2014BAC22B04）

作者	单位	E-mail
郭志明¹, 刘頔², 申铠君², 李军^2,3, 于志强², 张干²	1. 中国辐射防护研究院, 太原 030006 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, 广州 510640	junli@gig.ac.cn

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中文摘要:

2013年10月至2014年7月,在太原城区,分4个月采集大气细颗粒物,每个月选取4个样品,分析了颗粒物上8种有机磷酸酯阻燃剂(OPFRs)的浓度与组成。结果表明,大气PM_2.5样品中OPFRs总浓度算术平均值为890±486 pg/m³,其中三种含氯有机磷阻燃剂(TCEP,TCPP和TDCPP)占总量的80%,其他5种无氯OPFRs占总量的20%。化合物组成上,以TCPP(38.5%)最高,其次分别为TCEP(34.6%)、TPP(9.6%)、TDCPP(6.9%)、TTP(5.1%)、TBP(3.2%)、EhDPP(1.1%)和TEHP(0.8%)。季节变化来看,夏秋季样品中OPFRs浓度较高,而冬春样品浓度较低,且在化合物组成上,夏秋季样品中含氯OPFRs相对浓度要高于冬春季样品。相关分析显示,有机磷阻燃剂浓度变化与颗粒物浓度、有机质含量高低和环境温度无相关性,而主要与气团来源有关。

英文摘要:

PM_2.5 samples had been collected in Taiyuan City, China from October 2013 to July 2014. Total of 16 samples were selected for organophosphorus flame retardant(OPFR) analysis. The average concentrations of ₈OPFRs were 890±486 pg/m³. Among the OPFRs, chlorinated OPFRs, including TCEP, TCPP and TDCPP accounted for 80%, and others for 20%. For the individual compound, TCPP, TCEP, TPP, TDCPP, TTP, TBP, EhDPP and TEHP accounted for 38.5%, 34.6%, 9.6%, 6.9%, 5.1%, 3.2%, 1.1% and 0.8% of total OPFRs, respectively. Seasonal variation data were characterized by higher concentration of total OPFRs in summer and autumn than in winter and spring. Moreover, more contributions of chlorinated OPFRs to total OPFRs were found in summer and autumn than in winter and spring. Results of correlation analysis indicate that the concentration of OPFRs is not significantly influenced by particle mass, organic matters and ambient temperature. Moreover, the concentration of OPFRs is significantly affected by wind direction and speed.

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