Zhou Qiuhong, Zheng Na, Liu Jingshuang, Wang Yang, Sun Chongyu, Liu Qiang, Wang Heng, Zhang Jingjing
Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Shengbei Street 4888#, Changchun City, 130102, Jilin, China.
Environ Geochem Health. 2015 Apr;37(2):207-20. doi: 10.1007/s10653-014-9640-5. Epub 2014 Aug 13.
The residents health risk of Pb, Cd and Cu exposure to street dust with different particle sizes (<100 and <63 μm) near Huludao Zinc Plant (HZP) was investigated in this study. The average concentrations of Pb, Cd and Cu in the <100-μm and <63-μm dust were 1,559, 178.5, 917.9 and 2,099, 198.4, 1,038 mg kg(-1), respectively. It showed that smaller particles tended to contain higher element concentrations. Metals in dust around HZP decreased gradually from the zinc smelter to west and east directions. There was significantly positive correlation among Pb, Cd and Cu in street dust with different particle sizes. The contents of Pb, Cd and Cu in dust increased with decreasing pH or increasing organic matter. Non-carcinogenic health risk assessment showed that the health index (HI) for children and adult exposed to <63-μm particles were higher than exposed to <100-μm particles, which indicated that smaller particles tend to have higher non-carcinogenic health risk. Non-carcinogenic risk of Pb was the highest in both particle sizes, followed by Cd and Cu. HI for Pb and Cd in both particle sizes for children had exceeded the acceptable value, indicated that children living around HZP were experiencing the non-carcinogenic health risk from Pb and Cd exposure to street dust.
本研究调查了葫芦岛锌厂（HZP）附近不同粒径（<100和<63μm）街道灰尘中铅、镉和铜暴露对居民的健康风险。<100μm和<63μm灰尘中铅、镉和铜的平均浓度分别为1559、178.5、917.9和2099、198.4、1038mg kg(-1)。结果表明，较小粒径的颗粒往往含有更高的元素浓度。HZP周围灰尘中的金属从锌冶炼厂向西和东方向逐渐降低。不同粒径街道灰尘中的铅、镉和铜之间存在显著正相关。灰尘中铅、镉和铜的含量随pH值降低或有机质增加而增加。非致癌健康风险评估表明，暴露于<63μm颗粒的儿童和成人的健康指数（HI）高于暴露于<100μm颗粒的情况，这表明较小粒径的颗粒往往具有更高的非致癌健康风险。两种粒径下铅的非致癌风险最高，其次是镉和铜。两种粒径下儿童铅和镉的HI均超过了可接受值，表明居住在HZP附近的儿童正面临着因接触街道灰尘中的铅和镉而带来的非致癌健康风险。
