Li Jing, Wang Jun-Xia, Xu Wan-Ting, Shang Rong-Shuang, Gu Hai-Dong, Wen Yao-Jin, Zhang Li-Jun
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
School of Tianping, Suzhou University of Science and Technology, Suzhou 215000, China.
Huan Jing Ke Xue. 2017 Oct 8;38(10):4220-4227. doi: 10.13227/j.hjkx.201702001.
The contamination levels and distribution characteristics of four organophosphate flame retardants (OPFRs) in 25 outdoor dust samples collected in Suzhou were quantitatively analyzed by gas chromatography-mass spectrometry (GC-MS). The exposure to OPFRs via ingestion and inhalation of dust were also estimated for adults, children, and professional street sweepers. Four types of OPFRs were detected in all dust samples at different levels; the total OPFRs concentrations ranged from non-detected (ND) to 8901.66 ng·g, with a median of 1039.21 ng·g. The concentrations of TCPP, TBEP, TDCPP, and TCEP were in the range of 0-6931.46, 0-2021.15, 0-788.44, and 0-62.16 ng·g, respectively. The daily intake of ∑OPEs under a high dust ingestion scenario was 125.68, 915.78, and 6314.16 pg·kg for adults, children, and professional street sweepers, respectively. The estimated exposure of children to ∑OPEs was six times higher than that of adults. However, the daily intake of OPFRs via dust inhalation was 3.07E-02, 1.89E-02, and 1.54E-01 pg·kg for adults, children, and professional street sweepers, respectively. These findings indicated that the occurrence of OPFRs in the dust poses a significant risk to children and professional street sweepers.
采用气相色谱 - 质谱联用仪（GC-MS）对苏州采集的25份室外灰尘样品中4种有机磷酸酯阻燃剂（OPFRs）的污染水平和分布特征进行了定量分析。还估算了成人、儿童和专业街道清扫人员通过摄入和吸入灰尘接触OPFRs的情况。在所有灰尘样品中均检测到不同含量的4种OPFRs；OPFRs的总浓度范围为未检出（ND）至8901.66 ng·g，中位数为1039.21 ng·g。其中，磷酸三（2-氯丙基）酯（TCPP）、磷酸三（2-丁氧基乙基）酯（TBEP）、磷酸三（2,3-二氯丙基）酯（TDCPP）和磷酸三（2-氯乙基）酯（TCEP）的浓度分别在0 - 6931.46、0 - 2021.15、0 - 788.44和0 - 62.16 ng·g之间。在高灰尘摄入量情况下，成人、儿童和专业街道清扫人员的∑OPEs每日摄入量分别为125.68、915.78和6314.16 pg·kg。估计儿童接触∑OPEs的量是成人的6倍。然而，成人、儿童和专业街道清扫人员通过吸入灰尘摄入OPFRs的每日摄入量分别为3.07E - 02、1.89E - 02和1.54E - 01 pg·kg。这些结果表明，灰尘中OPFRs的存在对儿童和专业街道清扫人员构成了重大风险。
