Bioaccessibility of metals/metalloids in willow catkins collected in urban parks of Beijing and their health risks to human beings
文献类型：期刊论文
| 作者 | Wan, Xiaoming1,2; Gu, Gaoquan1,2; Lei, Mei1,2 ; Zeng, Weibin1,2
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2020-05-15 |
| 卷号 | 717页码:9 |
| ISSN号 | 0048-9697 |
| 关键词 | Lung bioaccessibility Catkin Dust Fine particle Metal/metalloid |
| DOI | 10.1016/j.scitotenv.2020.137240 |
| 通讯作者 | Wan, Xiaoming(wanxm.06s@igsnrr.ac.cn) |
| 英文摘要 | Air pollution and its resulting health risks in Beijing City have been widely investigated by scientists and administrators. However, the health risks caused by willow and poplar catkins in April and May (known as "spring snow") have been rarely reported. Poplar and willow are the two common trees in Beijing City that generate many whirling catkins in the air. The chemical composition of catkins remains unknown. In this study, catkins and dust samples were collected in several parks in Beijing. The total concentrations of metals/metalloids in catkins measured through inductively coupled plasma mass spectrometry were generally lower than those of the corresponding dust samples, and they were lower than the risk control standard for soil contamination of development land. The simulated rain and lung fluid extraction rates of catkin samples were significantly higher than those of the dust samples. The concentration of extracted Pb and Zn using simulated rainwater exceeded the environmental quality standards for surface water (0.1 and 2.0 mg/L for Pb and Zn, respectively), indicating the possibility of runoff pollution. Scanning electron microscopy images showed that fine particles (<10 mu m) are attached to the surface of catkins. Therefore, the metals/metalloids in fine particles adsorbed by the catkin samples possess higher bioaccessibility than that in the dust samples based on different sizes of particles. A significant correlation is found between Pb in catkin and Pb in dust. Therefore, attention should be paid to the possible increase in metal/metalloid concentrations in catkins planted in contaminated areas. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | AIR-POLLUTION ; SIZE-FRACTIONS ; HEAVY-METALS ; PARTICLE-SIZE ; DUST ; PHYTOREMEDIATION ; PHYTOEXTRACTION ; EXPOSURE ; SOILS ; BIOAVAILABILITY |
| 资助项目 | National Key Research and Development Program of China[2018YFC1800302] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017075] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000519994800020 |
| 资助机构 | National Key Research and Development Program of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/133406]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wan, Xiaoming |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100089, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wan, Xiaoming,Gu, Gaoquan,Lei, Mei,et al. Bioaccessibility of metals/metalloids in willow catkins collected in urban parks of Beijing and their health risks to human beings[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,717:9. |
| APA | Wan, Xiaoming,Gu, Gaoquan,Lei, Mei,&Zeng, Weibin.(2020).Bioaccessibility of metals/metalloids in willow catkins collected in urban parks of Beijing and their health risks to human beings.SCIENCE OF THE TOTAL ENVIRONMENT,717,9. |
| MLA | Wan, Xiaoming,et al."Bioaccessibility of metals/metalloids in willow catkins collected in urban parks of Beijing and their health risks to human beings".SCIENCE OF THE TOTAL ENVIRONMENT 717(2020):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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