Shi Shuang-Xin, Dong Liang, Li Ling-Ling, Zhang Hui, Li Si-Ming, Zhang Tian-Ye, Huang Ye-Ru
Key Laboratory of Dioxins Pollution Control for State Environmental Protection, National Research Center for Environmental Analysis and Measurements, Beijing 100029, China.
Huan Jing Ke Xue. 2013 Oct;34(10):4024-30.
Fifty-eight urban road dust samples were collected in June of 2009 from Suzhou, Wuxi and Nantong, South Jiangsu Province. Eight polybrominated diphenyl ether (PBDE) congeners and thirty-two polychlorinated biphenyl (PCB) congeners were measured using the gas chromatography-mass spectrometry. Concentrations of Sigma8PBDEs and Sigma32PCBs ranged from 4. 21 to 1 471 microg.kg-1 and ND was 14. 1 microg.kg-1 in the road dust samples, respectively. On the average, levels of PBDEs were much higher than PCBs in samples. Compared with the levels of PBDEs and PCBs in urban soil samples, results indicated that PBDEs levels observed in road dust samples were much higher than urban soil samples collected from other cities. Road dust PBDEs from combustion sources and vehicle emission should be attracted concerns. No significant difference was found between the levels of PBDEs or PCBs in the industrial areas and the urban center area, but was higher than landscape area. The results showed that there were exited unintentional emissions of PCBs in industrial areas. Investigation of compositional pattern of PBDEs indicated that BDE209 was the predominant congener in all samples, contributed 96.7% (64. 1% -99.8% ) of Sigma8 PBDEs . The dominant congeners in the Sigma32PCBs were tetra-PCBs and hexa-PCBs. The compositional pattern of PCBs congeners found in the road dust was not consistent with that of the commercial PCBs product and other environmental matrix.
2009年6月，在江苏省南部的苏州、无锡和南通采集了58个城市道路灰尘样本。使用气相色谱 - 质谱法测定了8种多溴二苯醚（PBDE）同系物和32种多氯联苯（PCB）同系物。道路灰尘样本中Σ8PBDEs和Σ32PCBs的浓度范围分别为4.21至1471μg·kg-1和未检出至14.1μg·kg-1。样本中PBDEs的平均含量远高于PCBs。与城市土壤样本中PBDEs和PCBs的含量相比，结果表明道路灰尘样本中观察到的PBDEs含量远高于从其他城市采集的城市土壤样本。来自燃烧源和车辆排放的道路灰尘PBDEs应引起关注。工业区和城市中心区的PBDEs或PCBs含量之间未发现显著差异，但高于景观区。结果表明工业区存在多氯联苯的无意排放。PBDEs组成模式的调查表明，BDE209是所有样本中的主要同系物，占Σ8PBDEs的96.7%（64.1% - 99.8%）。Σ32PCBs中的主要同系物是四氯联苯和六氯联苯。道路灰尘中发现的PCBs同系物组成模式与商业PCBs产品和其他环境基质的组成模式不一致。
