重庆市污染土壤磁化率特征研究

Study on the Characteristics of the Magnetic Susceptibility of Polluted Soil in Chongqing

基于重庆市3个不同类型污染土壤剖面以及表土样品进行磁化率研究,发现研究区土壤样品磁化率值差异很大,剖面样品以及垃圾场表土样品除铁山坪剖面样品外,χfd<10%,说明样品中SP颗粒很少,磁性颗粒以粗颗粒为主,样品中χlf的变化主要来源于人为污染物质的积累;剖面样品的χlf与χfd呈现负相关关系,同样表明样品中χlf的变化主要来源于人为的污染物质.

Based on the magnetic susceptibility values of three types of polluted soil profile and topsoil,the rock magnetic characteristics of topsoil and polluted soil in Chongqing city were discussed.Results show that there are great difference in magnetic susceptibility for different soil samples.The SP particles are not the dominant MS carrier particles in the samples,which indicated by the fact that χfd 〈10% for most samples.The fluctuation of χlf is originated mainly from the human activities,and the negative relationship between χlfand χfdalso suggests the human induced pollution contributed to the variation of χlf.