GUO Zhiming1, LIU Di2, SHEN Kaijun2, LI Jun2, YU Zhiqiang2, ZHANG Gan2
(1.China Institute for Radiation Protection, Taiyuan 030006, China；
2. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China)
Abstract：PM2.5 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.
Key words: organophosphorus flame retardant; Taiyuan; PM2.5; seasonal variation; back-trajectory of air mass
EARTH AND ENVIRONMENT Vol.44, No.6 Tot No.314, 2016, Page 600-604
