上窑灰场土壤微量元素的分布特征

淮南市是安徽省重要能源城市之一,在为华东地区输送煤电的同时,大量粉煤灰给淮南市的环境保护带来了巨大的压力.固废综合利用是淮南市改善环境面貌的主要手段,固废填充煤炭开采沉陷区,以废治废,是综合利用的途径之一.但是,固废中的有害微量元素是否会污染周边环境值得思考.在这样的背景下,对上窑灰场周围土壤进行取样调查,利用ICP-MS分析土壤样品中的8种微量元素含量,并综合两种方法对其进行评价.结果表明:土壤中某些微量元素如Cd含量较高,属5级污染.其余调查元素属无污染或轻微污染.研究结果为淮南市粉煤灰填充沉陷区提供一定的科学依据.

Distribution Characteristics of Soil Trace Elements in Shangyao Ash-field

Huainan is one of important energy cities in Anhui Province. While transporting coal and electricity to East China area, large amount of flying ash has made a big problem for Huainan environmental protection. Waste comprehensive utilization is the main method to improve environment appearance of Huainan. Filling subsidence with solid waste seems to be one of comprehensive utilization ways. But, whether hazardous trace elements in waste will pollute the peripheral environment is still worth pondering. Under such background, research on some soil samples beside Shangyao Ash-field was made. Eight kinds of trace elements in soil samples were analyzed with ICP-MS and were given environmental assessment. As a result, the contents of some trace element such as Cd is high, belonging to the pollution of level 5. The other investigated elements belong to no or slight pollution. The study results will provide the scientific basis for filling subsidence with flying ash in Huainan city.