城市重金属污染特征及其迁移转化浅析

本文以城市重金属污染为研究对象，对重金属在我国大中型城市中的污染现状、污染源分析作了简要地论述，分析得出：伴随着城市化进程的不断加快，重金属污染已经呈现出新的特点，并且已经构成当前城市环境污染的新特征．其中人为因素是城市重金属污染的主要来源．根据重金属元素在城市各环境因子中的分布，还探讨了重金属元素在城市各环境因子中的迁移转化规律，发现重金属污染在各城市环境因子中的迁移转化主要是在自然因子（包括风力、降水、渗漏等）和人为因子（包括交通流、人流、灌溉等）共同作用的结果．

Analysis on Heavy Metal Pollution Features in Urban Area

This article is the research object with the heavy metal pollution in city, and to the pollution present situation in the big-and-middle-sized city and the pollution source is analysed. The heavy metal pollution has appeared the new characteristic in urbanization, and has formed the new characteristic of pollution of the environment. The man-made factor is the chiefly source of heavy metal pollution. According to the distribution of heavy metal element in each environment, The movement and transformation of heavy metal element were affected by both natural factors and artificial factors.