新余市土壤汞现状分析

Analysis of Mercury Contention in Soil of Xinyu City

以江西省新余市为研究区，应用原子吸收分光光度法（AAS）对辖区不同位置土壤中的总汞（THg）进行了测定。结果表明：新余市土壤的重金属汞平均含量为0．066mg／kg，各样点汞含量变化范围0．014-0．172mg／kg，可认为调查区土壤汞含量尚未达到危害生态环境的污染水平；4个样点区中，汞含量均值大小排列次序为：分宜县〉渝水区〉高新开发区〉仙女湖区。不同土壤类型汞含量范围为0．025-0．119mg／kg，其对应类型汞含量表现为：石灰土〉山地黄壤〉潮土〉水稻土〉红壤〉红色石灰土；在不同土地利用方式下，汞含量表现为：工矿区（0．129mg／kg）〉宜林地〉水稻田〉荒地〉菜地〉旱地（O．028mg／kg）。由于没有很显著的污染源，其值不高，污染较轻微，但有增加趋势，其污染和控制有待进一步研究。

Application of on the area of soil in different locations of the total mercury （THg） of soil samples collected from Xinyu city in Jiangxi province were measured with atomic absorption spectrometry （AAS）. Analytical data show that： Hg average levels were 0. 066 mg/kg. The THg concentrations of various points range from 0. 014 to 0. 172 mg/kg in soil,and could be considered that Hg survey in soil has not reached the level of polluting the ecological environment; The average of the order of prioritieswas Fenyi county〉Yushui district〉high-tech development district〉 Xiannu Hu district. THg concentration in different soil types ranged from 0. 025 to 0. 119 mg/kg, with the order of limestone soil〉mountain yellow soil〉Chao soil〉paddy soil〉red soil〉red lime soil. In different land use patterns, mining areas （0. 129 mg/kg）〉forest land〉 paddy fields〉 wasteland〉vegetable〉dry land （0. 028mg/kg）. In the absence of a significant source of pollution,and its value is not high,less pollution,but there are an increasing trend,and its pollution control pending further study.