摘要
研究了葫芦岛市13个不同地点的154个木本植物样品的汞含量．葫芦岛市木本植物受到严重的汞污染．叶汞含量为0．029—2．700mg·kg^-1，平均为0．182mg·kg^-1，植物叶汞中的浓度李树〉梨树〉柳树〉杉树〉榆树〉槐树〉丁香〉杨树〉松树〉柏树；茎汞含量为0．009—0．342mg·kg^-1，平均为0．066mg·kg^-1，植物树茎、树叶汞含量呈显著正相关，树叶〉树茎．植物汞含量与其距离污染源的远近及风向有关，距离污染源越近，植物总汞含量越高．表明大气沉降作用对植物汞的含量有显著的影响，锌冶炼厂是植物汞含量的主要来源．
The mercury contents of the 154 samples of woody plants belonging to 13 different sites in Huludao City were investigated. Mercury has severely polluted the woody plants. The mercury content in the leaves of woody plants was 0.029 - 2.700mg·kg^-1 ,with the mean value 0.182mg·kg^-1. The mercury concentrations in the leaves were in the order of： plum 〉 pear 〉 willow 〉 fir 〉 elm 〉 locust tree 〉 clove 〉 poplar 〉 pine 〉 cypress. The mercury content in stems was 0. 009 - 0. 342 mg·kg^-1, with the mean value 0.066 mg·kg^-1, The mercury content in stems and leaves was correlated positively and notably, leaf 〉 stem. The mercury content in plants was related to wind direction and the distance between plants and polluting source. The nearer to the polluting source, the higher content of mercury in plants. All these showed that the atmosphere deposition had notable influence on the mercury content in plants, and the Zinc smelting factory was the main source of the mercury content in plants.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2007年第1期189-193,共5页
Environmental Science
基金
中国科学院知识创新工程重要方向项目(KZCX3-SW-437)
关键词
汞
木本植物
空间分布
污染
葫芦岛市
mercury
woody plants
spatial distribution
pollution
Huludao City
