摘要
比较系统地采集了徐州城市表层土壤样品20件,测定和计算了土壤样品中元素S和Fe的含量以及5个磁学参数(即质量磁化率(χ)、非磁滞剩余磁化率(χARM)、软等温剩磁(SOFT)、饱和等温剩磁(SIRM),以及频率磁化率(χFD)的数值。结果表明,与本区土壤中S的背景值相比,徐州城市表层土壤样品中富集较高浓度的S,且S的含量与磁学参数(质量磁化率、非磁滞剩余磁化率、软等温剩磁、饱和等温剩磁)的数值呈显著正相关,与频率磁化率的数值呈弱的负相关。徐州城市表层土壤中磁性矿物与表层土壤中S以及大气环境的SO2有相同的人为发生源,因此可以在一定程度上利用磁学测量技术初步评估该区域过去大气中SO2污染强度。
Concentrations of S as well as Fe and magnetic parameters＇ values （χ, χARMX, SOFT, SIRM, χFD） were measured from 20 Xuzhou urban topsoil samples. The S concentrations are higher compared to that of background values in this region. A strong positive correlation between magnetic parameters （χ,χARM, SIRM, SOFT） and S, and a weak negative correlation between magnetic parameter （χFD） and S are exist. The pollution degree of SO2 in the atmosphere in the past may be assessed by means of magnetic monitoring due to the similar anthropogenic sources between magnetic minerals and S in Xuzhou urban topsoils as well as SO2 in the urban atmosphere.
出处
《科技导报》
CAS
CSCD
2006年第7期48-51,共4页
Science & Technology Review
基金
江苏省"333"学术技术带头人和江苏省"六大高峰人才"基金项目
关键词
环境磁学监测
硫富集
SO2污染
城市表层土壤
徐州
environmental magnetic monitoring
S enrichment
SO2 pollution response
urban topsoil
Xuzhou
