Key Laboratory of Wetland Ecology and Environment, Institute of Northeast Geography and Agroecology, Chinese Academy of Science, Changchun 130012, China.
J Environ Sci (China). 2010;22(8):1179-83. doi: 10.1016/s1001-0742(09)60235-7.
The purpose of this study is to investigate total mercury (THg) distribution and its bioaccumulation up the soil-plant-grasshopper-spider in the Huludao City, which is polluted seriously by chlor-alkali and zinc smelting industry in Northeast of China. Results indicated that average THg concentrations in soil, plant leaves, grasshopper Locusta migratoria manilensis and Acrida chinensis, and spider were 0.151, 0.119, 0.167 and 0.134 mg/kg, respectively. THg spatial distribution suggested that most of mercury came from the chlor-alkali plant and the two zinc smelteries. The highest mercury concentration was found in the wings among different grasshoppers' organs. Although spiders are the predatory, THg concentrations in their bodies were not high, and only on the same level as in grasshoppers, which might be due to spiders' special living habits. In the light of the mercury transportation at every stage of the soil-plant-grasshopper-spider food chain, the bioaccumulation factors were 0.03, 0.79-1.11 and 0.80-1.13 respectively. It suggested that mercury biomagnification up terrestrial food chains was not so large and obvious as it was in the aquatic food chain.
本研究旨在调查受中国东北氯碱和锌冶炼工业严重污染的葫芦岛市土壤-植物-蝗虫-蜘蛛体内总汞（THg）的分布及其生物累积情况。结果表明，土壤、植物叶片、蝗虫和蜘蛛体内的平均 THg 浓度分别为 0.151、0.119、0.167 和 0.134mg/kg。THg 的空间分布表明，大部分汞来自氯碱厂和两家锌冶炼厂。在不同蝗虫器官中，翅膀中的汞浓度最高。尽管蜘蛛是捕食性的，但它们体内的汞浓度并不高，与蝗虫体内的汞浓度相当，这可能是由于蜘蛛的特殊生活习性。根据土壤-植物-蝗虫-蜘蛛食物链各阶段汞的迁移情况，生物累积因子分别为 0.03、0.79-1.11 和 0.80-1.13。这表明，与水生食物链相比，汞在陆地食物链中的生物放大作用并不那么大且明显。
