3种磷代阻燃剂在室内外灰尘中的粒径分布规律及人体暴露评估

Particle size distribution and human exposure assessment of three organic phosphorus flame retardant in indoor and outdoor dust

磷代阻燃剂(Phosphorus flame retardants,PFRs)是目前被广受关注的一类新型有机污染物.探究了北京市5类典型室内外灰尘中3种PFRs(三(2-丁氧乙基)磷酸酯(Tris(2-butoxyethyl)phosphate,TBOEP)、磷酸三(2-氯乙基)酯(Tris(chloroethyl)phosphate,TCEP)、磷酸三(2-氯异丙基)酯(Tris(2-chloroisopropyl)phosphate,TCIPP))的污染特征、粒径分布规律及人体暴露水平.结果显示,3种PFRs在宾馆灰尘中的污染水平均最高,在道路灰尘中最低.PFRs在不同类型灰尘中的粒径分布特征存在显著差异.宾馆员工和儿童对灰尘中PFRs的暴露水平较高,需引起重视.

Phosphorus flame retardants are a series of emerging organic pollutants. In this study,contamination characteristics,particle size distribution and human exposure risks of three kinds of PFRs（ tris（ 2-butoxyethyl） phosphate,tris（ chloroethyl） phosphate and tris（ 2-chloroisopropyl） phosphate） in five typical types of indoor and outdoor dust in Beijing were investigated. The results showed that the occurrence levels of the 3 kinds of PFRs were the highest in hotel dust and the lowest in road dust. The particle size distribution of PFRs was significantly different in different types of dust. Hotel staff and children were suffering much higher PFRs exposure dose than other populations,which should be paid more attentions in the future.