摘要
为了解长沙地区土壤监测点位重金属污染现状及积累情况,以长沙地区2021年度50处例行监测点位土壤为监测对象,对土壤中镉、汞、砷、铅、铬、铜、锌、镍含量进行监测。监测结果表明:镉元素的污染风险较高,需加强土壤环境监测和农产品协同监测。与“七五”期间的土壤背景值比较,2021年长沙地区土壤点位的重金属除铜、镍外,镉、汞、砷、铅、铬、锌都有一定程度的积累。其中,镉的积累最严重(积累倍数16.78倍),铅的年平均积累速率最大[0.427 mg/(kg·a)],汞的年平均积累速率最小[0.001 mg/(kg·a)];铜、镍的平均含量呈现下降趋势。
In order to understand present situation and accumulation trend of heavy metal pollution in soil monitoring sites in Changsha, 50 routine monitoring sites in Changsha in 2021 was taken as the monitoring object, the contents of Cd, Hg, As, Pb, Cr, Cu, Zn and Ni in the soil were monitored.The results showed that the risk of Cd pollution was high, and it is necessary to intensify the collaborative monitoring of soil environment and agricultural product.Compared with the soil background value during the “Seventh Five-Year Plan” period, heavy metals Cd, Hg, As, Pb, Cr and Zn were accumulated to a certain extent except Cu and Ni at monitoring sites in Changsha area in 2021.Among them, the accumulation of Cd was the most serious(16.78 times),the annual average accumulation rate of Pb was the highest(0.427 mg·kg^(-1)·a-1),and the average annual accumulation rate of Hg was the lowest(0.001 mg·kg^(-1)·a-1),the average content of Cu and Ni showed a downward trend.
作者
彭锐
吴坚
谢亚莉
李启武
谢杲
蒋艳萍
陈巧
黄钟霆
PENG Rui;WU Jian;XIE Ya-li;LI Qi-wu;XIE Gao;JIANG Yan-ping;CHEN Qiao;HUANG Zhong-ting(Changsha Ecological and Environmental Monitoring Center of Hunan Province,Changsha 410001,China;Hunan Ecological and Environmental Monitoring Center,Changsha 410007,China)
出处
《环境生态学》
2023年第1期35-38,共4页
Environmental Ecology
作者简介
彭锐(1983-),女,湖南浏阳人,硕士,高级工程师,主要从事环境监测研究;通讯作者:黄钟霆,E-mail:13643860@qq.com。
