Mercury Contents and Distributions in Spiders Around the Zinc Smeltery in Huludao City
Mercury Contents and Distributions in Spiders Around the Zinc Smeltery in Huludao City
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发表时间：
2009
影响因子：
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通讯作者：
Zhang Xiu-wu
中科院分区：
文献类型：
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作者：
Zhang Xiu-wu
Compared with the aquatic ecosystems, few are available on heavy metal transferring and accumulating through the terrestrial food chains.A great deal of mercury-contained waste are brought in the course of metals smelting process and would cause mercury contents rise in the soil, water, and air around the smeltery, but mercury contents in terrestrial biota, especially in insects, are deficiency to be discussed.Spiders are common and representative predators in summer grasslands.In order to study the distribution and accumulation characteristics of mercury in spiders, total mercury contents were analyzed with cold atomic absorption technique using samples collected around the zinc smeltery in Huludao City.Results indicated that mercury contents in spiders on wet basis were 6.72～185.01 ng·g-1 with the average values of 60.19 ng·g-1, which were much higher than those in the contrast areas.Mercury contents in spiders of different sites varied with and were remarkably affected by the distances to the zinc smeltery.Mercury contents in the whole body, the cephalthorax and the abdomen were negatively correlated with their corresponding weights, respectively.It showed that the biomass increasing would reduce total mercury contents in spiders.Mercury contents in parts of spiders significantly differed and ordered as the cephalothoraxthe legsabdomen.But spiders did not show higher mercury accumulation abilities than other insects.
