Li Ling, Wang Chunlei, Jiang Yousheng, Zhou Jian, Yang Dacheng, Zhang Jianqing
Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China.
Wei Sheng Yan Jiu. 2012 Sep;41(5):776-82.
Objective Concentrations and proliles of 7 polybrominated diphenyl ethers (PBDEs) compounds in ambient air in Shenzhen city were analyzed, and inhalation exposure amount for local resident was concluded firstly domesticly.
7 polybrominated diphenyl ethers compounds (PBDEs) (BDE-28, BD-E-47, BDE-99, BDE-100, BDE-153, BDE-154, BDE-183) in ambient air (including gas phase and particle phase ) were determined by isotope dilution high-resolution gas chromatography/high-resolution double-focusing magnetic mass spectrometer (HRGC/ HRMS) with High volume active air sampler for 11 sampling sites in 6 administrative district in Shenzhen. Furthermore, the inhalation exposure amount for local resident was calculated and concluded using concentration of PBDEs, respiratory rate and gas exchange in the air ratio in Alveolar.
The average concentration of PBDEs in atmosphere samples was 29.03 pg/m, ranged from 8.28-168.86 pg/m, the PBDEs pollution level as higher in rain season than that in dry season. The predominant PBDEs congeners measured in the two periods were BDE-47 and BDE-99, accounted for more than 31 and 16 percent of total concentration, respectively. While the specific profile was found in the dry season, the seven monomer distribution proportion tended to be equal, especially BDE-183 accounted for 17 percent of total concentration. Inhalation exposure amount for local adults and children was 4.72 pg/kg and 10.74 pg/kg respectively.
he levels of PBDEs in atmosphere in Shenzhen are higher than that in United Kingdom, South Korea, Osaka and Kyoto in Japan, however it is lower than the reported levels of Guangzhou and Beijing. Children's breathing exposure amount is higher than that in adults, this circumstances should be paid more attention. Furthermore, the present study provides the important basic data of PBDEs pollution level in Shenzhen and Inhalation exposure amount for local residents firstly.
分析深圳市环境空气中7种多溴二苯醚（PBDEs）化合物的浓度及分布特征，首次在国内推算出当地居民的吸入暴露量。
采用同位素稀释高分辨气相色谱/高分辨双聚焦磁质谱仪（HRGC/HRMS），利用大容量空气采样器对深圳市6个行政区的11个采样点的环境空气（包括气相和颗粒相）中的7种多溴二苯醚化合物（PBDEs）（BDE-28、BD-E-47、BDE-99、BDE-100、BDE-153、BDE-154、BDE-183）进行测定。此外，利用PBDEs的浓度、呼吸速率以及肺泡中空气的气体交换率，计算并推算出当地居民的吸入暴露量。
大气样品中PBDEs的平均浓度为29.03 pg/m³，范围为8.28 - 168.86 pg/m³，雨季PBDEs污染水平高于旱季。两个时期检测到的主要PBDEs同系物为BDE-47和BDE-99，分别占总浓度的31%以上和16%以上。在旱季发现了特定的分布特征，7种单体的分布比例趋于相等，特别是BDE-183占总浓度的17%。当地成年人和儿童的吸入暴露量分别为4.72 pg/kg和10.74 pg/kg。
深圳市大气中PBDEs的水平高于英国、韩国、日本大阪和京都，但低于广州和北京的报道水平。儿童的呼吸暴露量高于成年人，这种情况应予以更多关注。此外，本研究首次提供了深圳市PBDEs污染水平及当地居民吸入暴露量的重要基础数据。
