Mercury distribution and bioaccumulation up thesoil-plant-grasshopper-spider food chain in Huludao City, China
Zhongsheng Zhang , Qichao Wang , Dongmei Zheng , Na Zheng , Xianguo Lu
DOI:
Received ,Revised , Accepted , Available online
Volume 22,2010,Pages 1179-1183
- Summary
- References
- Related Articles
The purpose of this study is to investigate total mercury (THg) distribution and its bioaccumulation up the soil-plant-grasshopperspider
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 di erent
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.
