Horizontal distribution and levels of heavy metals in the biggest snowstorm in a century in Shenyang, China.
Horizontal distribution and levels of heavy metals in the biggest snowstorm in a century in Shenyang, China.
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DOI：
10.1016/s1001-0742(08)62136-1
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发表时间：
2008
影响因子：
6.9
通讯作者：
Jing An;Qixing Zhou;Weitao Liu;L. Ren
中科院分区：
文献类型：
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作者：
Jing An;Qixing Zhou;Weitao Liu;L. Ren
通过对分布在中国沉阳地区不同区域的 17 个地点采集的一系列超净样品中的 4 种金属（As、Cd、Pb 和 Cu）进行分析，调查了 1904 年以来沉阳最大雪灾中重金属的水平分布和水平。结果表明，工业区雪中4种重金属含量均较高，分别高达7.3（As）、2.2（Cd）、850.0（Pb）和0.197~20.2（Cu）μg/kg。相比之下，在郊区，除了砷之外，没有检测到它们的浓度。由于长期使用含砷农药和除草剂，农场采集的雪样中检出砷。在公园、居民区和商业区采集的雪样中也检测到了As、Cd和Pb，这主要是由于人类活动造成的。从某种意义上说，长期的工业活动、交通活动、燃煤和农业活动对雪中这些重金属的水平分布和含量有不同的影响。极端气候条件下雪中重金属水平分布和浓度的数据可以为城市地区的环境污染状况和行为提供独特的快照。
The horizontal distribution and levels of heavy metals in the biggest snowstorm in Shenyang since 1904 were investigated by analyzing 4 metals (As, Cd, Pb, and Cu) in a series of ultraclean samples collected from 17 sites distributed in different regions of the Shenyang area, China. The results showed that the concentrations of all the 4 heavy metals in snow from the industrial regions were high, up to 7.3 (As), 2.2 (Cd), 850.0 (Pb), and 0.197-20.2 (Cu) microg/kg, respectively. In the suburb, in contrast, their concentrations were not detected, except for As. Because of the long-term application of arsenical pesticides and herbicides, As was detected in the snow samples which collected on the farm. As, Cd, and Pb were also detected in the snow samples collected from the parks, the residential areas, and the commercial districts mainly by reason of human activities. In a sense, long-term industrial activities, traffic activities, coal combustion, and agricultural activities affected the horizontal distribution and levels of these heavy metals in snow differently. The data relating to the horizontal distribution and concentrations of heavy metals in the snow under extreme climatic conditions can provide with a unique snapshot of environmental pollution situation and behaviors in urban areas.