生态与农村环境学报2013，Vol.29Issue(3)：375-379,5.
基于同步辐射的硬X射线荧光技术分析污染土壤中重金属分布
Analysis of Heavy Metal Distribution in Polluted Soil Using Synchrotron Radiation Hard X-Ray Fluorescence Technology
摘要
Abstract
Synchrotron-radiation-based micro-beam X-ray fluorescence (μ-XRF) technology can be used to analyze in-situ elemental composition,chemical properties,and material structure of samples and bi-dimensional distribution of the elements in the samples,thus making it possible to intuitively observe distribution of target elements in a complex system.Using the traditional acid digestion in combination with the state-of-art μ-XRF technology,the contents and spatial distribution of metal (-loids) in a polluted soil were investigated.The soil was collected from a tin mining area in Hunan Province,China,which is one of the largest Sb mines in the world,and has long been famed as the " World Antimony Capital".In addition,linear regression analysis was performed for relationships between elements in the soil.Results show that the soil was quite high in Sb and As,being 6 681 and 878 mg · kg-1,respectively,in concentration.Moreover,μ-XRF revealed that As was closely related separately to Fe and Mn,in spatial distribution with determinant coefficient reaching 0.225 8 and 0.181 1,which more intuitively displayed that As in the soil was dominantly Fe-Mn-bound As.Comparing with the traditional acid digestion method,the μ-XRF method is able to intuitively expose in-situ relationships between the elements in distribution in the soil,so it is a useful tool in overall assessing and predicting environmental behaviors of heavy metals in the soil,which in turn provides theoretical support to the development of technologies to remedy polluted soils.关键词
同步辐射/μ-XRF/重金属/污染土壤Key words
synchrotron radiation/μ-XRF/heavy metal/polluted soil分类
资源环境引用本文复制引用
樊建新,王玉军,崔晓丹,范婷婷,周东美..基于同步辐射的硬X射线荧光技术分析污染土壤中重金属分布[J].生态与农村环境学报,2013,29(3):375-379,5.基金项目
国家自然科学基金(41171189,41125007) （41171189,41125007）
