Occurrences and toxicological risk assessment of eight heavy metals in agricultural soils from Kenya, Eastern Africa
文献类型：期刊论文
| 作者 | Mungai, Teresiah Muciku1,2,3; Owino, Anita Awino1,2,3; Makokha, Victorine Anyango1,2,3; Gao, Yan4; Yan, Xue1,2; Wang, Jun1,2 |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 23期号:18页码:18533-18541 |
| 关键词 | Concentrations Toxicological risk assessment Agriculture ecological risk Heavy metals Kenya Eastern Africa |
| ISSN号 | 0944-1344 |
| DOI | 10.1007/s11356-016-7042-1 |
| 英文摘要 | The concentration distribution and toxicological assessment of eight heavy metals including lead (Pb), cadmium (Cd), copper (Cu), chromium (Cr), nickel (Ni), mercury (Hg), arsenic (As), and zinc (Zn) in agricultural soils from Kenya, Eastern Africa, were investigated in this study. The results showed mean concentrations of eight heavy metals of Zn, Pb, Cr, Cu, As, Ni, Hg, and Cd in agricultural soils as 247.39, 26.87, 59.69, 88.59, 8.93, 12.56, 8.06, and 0.42 mg kg(-1), respectively. These mean values of eight heavy metals were close to the toxicity threshold limit of USEPA standard values of agricultural soils, indicating potential toxicological risk to the food chain. Pollution index values revealed that eight heavy metals severely decreased in the order Hg > Cd > As > Cu > Pb > Zn > Ni > Cr and the mean value of the overall pollution index of Hg and Cd was 20.31, indicating severe agriculture ecological risk. Potential pollution sources of eight heavy metals in agricultural soils were mainly from anthropogenic activities and natural dissolution. The intensification of human agricultural activities, the growing industrialization, and the rapid urbanization largely influenced the concentration levels of heavy metals in Kenya, Eastern Africa. Moreover, the lack of agricultural normalization management and poor enforcement of environmental laws and regulations further intensified the widespread pollution of agricultural soils in Kenya. |
| 资助项目 | Funding Project of Sino-Africa Joint Research Center ; Chinese Academy of Sciences[Y623321K01] ; Hundred Talents Program of the Chinese Academy of Sciences[Y329671K01] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000384435800060 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/33]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Wang, Jun |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Sino Africa Joint Res Ctr, Wuhan 430074, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Wuhan Environm Protect Bur, Wuhan 430022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mungai, Teresiah Muciku,Owino, Anita Awino,Makokha, Victorine Anyango,et al. Occurrences and toxicological risk assessment of eight heavy metals in agricultural soils from Kenya, Eastern Africa[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(18):18533-18541. |
| APA | Mungai, Teresiah Muciku,Owino, Anita Awino,Makokha, Victorine Anyango,Gao, Yan,Yan, Xue,&Wang, Jun.(2016).Occurrences and toxicological risk assessment of eight heavy metals in agricultural soils from Kenya, Eastern Africa.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(18),18533-18541. |
| MLA | Mungai, Teresiah Muciku,et al."Occurrences and toxicological risk assessment of eight heavy metals in agricultural soils from Kenya, Eastern Africa".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.18(2016):18533-18541. |
入库方式： OAI收割
来源：武汉植物园
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