典型地区大气中多溴联苯醚和新型溴代阻燃剂的水平及组成分布

Comparative Study of the Level and Distribution of Polybrominated Diphenyl Ethers and New Brominated Flame Retardants in the Atmosphere of Typical Urban

溴代阻燃剂被广泛应用于工业和商业产品中,广泛存在于各种环境介质中,可能会对环境和人体产生潜在的危害.本研究选取我国溴代阻燃剂生产源区山东省潍坊市滨海开发区为生产源区域,广西壮族自治区南宁市作为对照区域,测定两地大气中8种多溴联苯醚(PBDEs:BDE-28,-47,-100,-99,-154,-153,-183,-209)和新型溴代阻燃剂(NBFRs:PBT,PBEB,HBB)的浓度.结果表明,潍坊和南宁大气中Σ8PBDEs算术平均浓度分别为1.4×105pg·m-3和323.0 pg·m-3,Σ3NBFRs算术平均浓度分别为4.2×103pg·m-3和11.9 pg·m-3.与其他城市相比,生产源区大气中溴代阻燃剂浓度在全球范围内处于较高污染水平,南宁市则与我国其他城市的水平相当,生产源区大气中PBDEs的分布特征异于南宁,PBEB、PBT、HBB及BDE-209之间的相关性在两城市也具有一定的差异.

Brominated flame retardants( BFRs) are widely used in industrial and commercial products and are frequently detected in various environmental media. It might be potential harm to the environment and the human body. This study reported the levels of 8 kinds of polybrominated diphenyl ethers( PBDEs: BDE-28,-47,-100,-99,-154,-153,-183,-209) and 3 kinds of new brominated flame retardants( NBFRs: PBT,PBEB,HBB) in the atmosphere of Binhai Development Zone,Weifang City,Shandong Province, which was taken as a BFR production source area and of Nanning City,Guangxi Province,which was taken as a contrast area. The results showed that the average concentrations of Σ8 PBDEs in the atmosphere of Weifang and Nanning were 1. 4 × 105pg·m- 3and 323. 0 pg·m- 3,respectively,and the average concentrations of Σ3 NBFRs were 4. 2 × 103pg·m- 3and 11. 9 pg·m- 3,respectively. Compared with other cities,the concentrations of BFRs in the atmosphere of the production area were at a high level in the globe,and the concentrations of BFRs in Nanning were similar with other cities in China. The distribution characteristics of PBDEs and NBFRs in the atmosphere of the production area were different from those of Nanning,and the correlations between PBEB,PBT,HBB and BDE-209 were different between Weifang and Nanning.