浙江富阳金属冶炼厂周围水田土壤-水稻系统中As、Se含量特征  

An Investigation on Arsenic and Selenium in Paddy Soil-Rice System in the Vicinity of Metal Smelters in Zhejiang Province

作　　者：姚春霞[1] 尹雪斌[1] 张长波[1] 李志博[1] 宋静[1] 骆永明[1] 

机构地区：[1]中国科学院南京土壤研究所土壤与环境生物修复研究中心

出　　处：《土壤》2006年第5期534-538,共5页Soils

基　　金：中-荷战略科技联盟计划项目(2004CB720403);国家重点基础研究发展规划项目(2002CB410810);国家自然科学基金重点项目(40432005);江苏省博士后科研计划项目;王宽诚博士后工作奖励基金资助。

摘　　要：本文研究了浙江富阳金属冶炼厂周围水田土壤-水稻系统中As、Se含量特征。所采土壤样品中,As含量高于土壤环境质量一、二和三级标准的分别占总数的21.15%、9.62%和7.69%。该金属冶炼厂周围88.46%的土壤属于富Se土壤。足Se土壤占总样的5.77%,过量Se土壤占3.85%,高Se土壤占5.77%。水田土壤可能受与金属冶炼有关的点源污染影响。糙米的As、Se含量高于全国糙米As、Se背景值,可食部分As、Se浓度均未超过我国规定的水稻卫生标准。In this study, the characteristic of As and Se contents in paddy soil-rice system in the vicinity of a nonferrous metal smelter was investigated. The total As content in 21.2% of soil samples exceeded the first class of Chinese Soil Environmental Quality Standard, 9.62% above the second class and 7.69% above the third class. Most of soils contained enough Se content or abundant Se. The percentage of soil with rich Se content from 0.45 to 2.00 mg/kg was 88.46%. As and Se contents in crude rice was far higher than national background values, although As and Se contents in edible parts did not exceed the Chinese quality standard for rice grains. The metal smelters had led As and Se pollution in soil- rice system.

关 键 词：金属冶炼厂 水稻土 水稻 AS SE 风险评估 

分 类 号：S153[农业科学—土壤学]