赞比亚卡布韦市一个铅锌矿周围路边土壤和野鼠中的金属和类金属污染。
Metal and metalloid contamination in roadside soil and wild rats around a Pb-Zn mine in Kabwe, Zambia.
机构信息
Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku, Sapporo 060-0818, Japan.
Department of Biomedical Studies, School of Veterinary Medicine, University of Zambia, P.O. Box 32379, Lusaka, Zambia.
出版信息
Environ Pollut. 2011 Jan;159(1):175-181. doi: 10.1016/j.envpol.2010.09.007. Epub 2010 Oct 23.
Metal (Cr, Co, Cu, Zn, Cd, Pb, Ni) and metalloid (As) accumulation was studied in roadside soil and wild rat (Rattus sp.) samples from near a Pb-Zn mine (Kabwe, Zambia) and the capital city of Zambia (Lusaka). The concentrations of the seven metals and As in the soil samples and Pb in the rat tissue samples were quantified using atomic absorption spectroscopy. The concentrations of Pb, Zn, Cu, Cd, and As in Kabwe soil were much higher than benchmark values. Geographic Information System analysis indicated the source of metal pollution was mining and smelting activity. Interestingly, the area south of the mine was more highly contaminated even though the prevailing wind flow was westward. Wild rats from Kabwe had much higher tissue concentrations of Pb than those from Lusaka. Their body weight and renal Pb levels were negatively correlated, which suggests that mining activity might affect terrestrial animals in Kabwe.
研究了赞比亚铅锌矿（卡布韦）和赞比亚首都（卢萨卡）附近路边土壤和野生鼠（Rattus sp.）样本中金属（Cr、Co、Cu、Zn、Cd、Pb、Ni）和类金属（As）的积累情况。使用原子吸收光谱法定量测定了土壤样本中七种金属和 As 的浓度以及大鼠组织样本中 Pb 的浓度。卡布韦土壤中 Pb、Zn、Cu、Cd 和 As 的浓度远高于基准值。地理信息系统分析表明，金属污染的来源是采矿和冶炼活动。有趣的是，尽管盛行风向是西风，但矿以南的区域污染更为严重。来自卡布韦的野生鼠的组织中 Pb 浓度明显高于来自卢萨卡的野生鼠。它们的体重和肾脏中的 Pb 水平呈负相关，这表明采矿活动可能会影响卡布韦的陆地动物。
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