生态环境学报Issue(2)：307-311,5.
铅锌冶炼厂渣堆场周边土壤铅污染特征
The Characteristics of lead pollution in the soil around the slag yard in lead and zinc smeltery
摘要
Abstract
The soils around the slag yard in smeltery are contaminated by heavy metals which in smelting waste are transfered and transformed by rain washing and filtrating. Survey the soil contamination characteristics has great significance to remediation and utilization. Lead pollution in the soil around the slag yard in lead and zinc smeltery in hunan province was surveyed. The survey fields include the 0~100 cm depths soil in the range of 0 to 4 km distance from the slag yard. Lead pollution was assessed by the single pollution index method. The distribution characteristics of lead pollution changing with the level distance and the vertical distance were analyzed. The result indicates that the soil in the range of 0 to 1 km distance from the slag yard is polluted by lead, The lead concentrations in the soil under the slag yard, 10 m and 1 km from the slag yard reached 775.25, 645.33 and 309.80 mg·kg-1. The concentrations were much higher then the values of the soil background and also much higher than the values of soil quality standard of grade two and three. The lead pollution indexes in the three sampling regions are 2.6, 2.1 and 1.03. The pollution levels are all grade Ⅱ, those belong to light pollution. In the three sampling regions, the lead concentrate in the 0~20 cm depths soil layers, the lead mass fraction reached 775.25, 645.33 and 309.80 mg·kg-1, respectively. The lead in the 20~100 cm depth soil layer are less than those in the 20~100 cm depth soil layer, the lead mass fraction are only about 88.48~120.96, 235.01~380.16 and 309.80~59.32 mg·kg-1. The lead transport quantities from 0~20 cm depth soil layer to the 20~100 cm depth soil layer under the slag yard are much less than those in 10 m and 1 km distance from the slag yard. The lead mass fractions of the 0~20 cm depth soil layer in the three sampling regions reduce with the increasing distance, the change law is 0 m distance from the slag yard(under the slag yard)>10 m distance from the slag yard>1 km distance from the slag yard>4 km distance from the slag yard. The lead mass fractions of 20~40 cm and 40~60 cm depth soil layer increase firstly and then reduce, the change law is 10 m distance from the slag yard > 1 km distance from the slag yard>0 m (under the slag yard) distance from the slag yard>4 km distance from the slag yard. The lead mass fractions of 60~80 cm and 80~100 cm increase firstly and then reduce with the increasing distance, the change law is 10 m distance from the slag yard>0 m distance from the slag yard (under the slag yard)>1 km distance from the slag yard>4 km distance from the slag yard.关键词
铅锌冶炼厂/铅污染/土壤/渣堆场Key words
lead and zinc smelting/lead pollution/soil/slag yard分类
资源环境引用本文复制引用
袁艺宁,杨志辉,柴立元,周颖新..铅锌冶炼厂渣堆场周边土壤铅污染特征[J].生态环境学报,2014,(2):307-311,5.基金项目
国家杰出青年科学基金项目（50925417）；国家自然科学基金项目（51074191）；国家关键技术的研究和发展项目（2012BAC09B04）；湖南省科技计划项目 （）
