合肥地区典型城镇土壤中As、Hg的环境地球化学基线

Environmental geochemical baselines of soil metal elements in typical towns in Hefei area, Anhui province

运用标准化及统计分析方法分别计算了合肥地区典型城镇土壤中重金属元素As、Hg的环境地球化学基线,确定的As、Hg环境地球化学基线分别为10.230mg/kg、0.073mg/kg,并与背景值和异常下限值进行了对比检验。结果显示,标准化方法和统计分析方法均能有效计算土壤中元素的环境地球化学基线,获得的基线完全符合其定义和实际意义,可以很好地用于进一步的土壤环境评价和研究。

This paper identified the environmental geochemical baselines of topsoil metal elements As and Hg in the typical towns in Hefei area, by using the standard method and statistic method. The baseline values of As and Hg are 10.230 mg/kg and 0.073 mg/kg respectively, which are then compared with the geochemical abnormal thresholds. The results indicate that the standard method and statistic method are all good for calculating the element environmental geochemical baseline of soil, and the values suit the definition and practical significance of environmental geochemical baseline absolutely. The As and Hg environmental geochemical baselines of soil is a good base for the future environmental evaluation and research in the typical towns in Hefei area.