中国兰州市大学校园宿舍室内/外灰尘中金属（类）来源和健康风险评估。
Assessment of source and health risk of metal(loid)s in indoor/outdoor dust of university dormitory in Lanzhou City, China.
机构信息
Gansu Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China.
Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China.
出版信息
Environ Sci Pollut Res Int. 2019 Nov;26(31):32333-32344. doi: 10.1007/s11356-019-06365-7. Epub 2019 Oct 10.
The pollution of metal(loid)s from indoor and outdoor dust is of great concern because of its impact on human health. The concentrations of nine metal(loid)s (Mn, Cu, Zn, Cd, Cr, Ni, Pb, Hg, and As) were investigated in indoor and outdoor dust samples of university dormitories in winter and summer seasons in Lanzhou City, China. This study revealed the variations of metal(loid) concentrations in dust samples with the seasonal scale and floor heights. The results showed that the concentrations of some metal(loid)s (Cu, Cd, Ni, Pb, and As) in dust samples collected in winter were higher than those of the dust samples collected in summer. The Hg in indoor dust was mainly derived from building materials and indoor human activities. Additionally, the concentrations of some metal(loid)s (Hg, Mn, As, Cu, Cd) in dust samples varied with the height of the floors from ground level. The concentrations of Hg in dust samples collected on upper floors (9-16th floors) were higher than those collected on down floors (1-8th floors), while Mn and As were the opposite of that. Cu and Cd concentrations increased as the floor height increased. Our results demonstrated that the adults and the children (particularly the children) endured potential health risks due to exposure to metal(loid)s from both indoor and outdoor dust in the studied area.
室内和室外灰尘中的金属（类）污染物引起了极大关注，因为其对人类健康有影响。本研究调查了中国兰州市大学宿舍冬季和夏季室内和室外灰尘样本中九种金属（类）元素（Mn、Cu、Zn、Cd、Cr、Ni、Pb、Hg 和 As）的浓度。该研究揭示了金属（类）元素浓度随季节和楼层高度变化的情况。结果表明，冬季采集的灰尘样本中某些金属（类）元素（Cu、Cd、Ni、Pb 和 As）的浓度高于夏季采集的样本。室内灰尘中的 Hg 主要来源于建筑材料和室内人类活动。此外，某些金属（类）元素（Hg、Mn、As、Cu、Cd）的浓度随楼层高度从底层到高层而变化。高层（9-16 层）采集的灰尘样本中 Hg 的浓度高于底层（1-8 层）采集的样本，而 Mn 和 As 则相反。Cu 和 Cd 的浓度随楼层高度的增加而增加。我们的研究结果表明，在研究区域内，成年人和儿童（尤其是儿童）因暴露于室内和室外灰尘中的金属（类）元素而面临潜在的健康风险。
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