土壤中硒的形态连续浸提方法的研究  

SEQUENTIAL EXTRACTION A NEW PROCEDURE FOR SELENIUM OF DIFFERENT FORMS IN SOIL

作　　者：吴少尉[1,2] 池泉[1] 陈文武[1] 汤志勇[1] 金泽祥[1] 

机构地区：[1]中国地质大学材料科学与化学工程学院 [2]湖北民族学院化学与环境工程学院恩施445000

出　　处：《土壤》2004年第1期92-95,103,共5页Soils

基　　金：国家地质调查局基金项目(DK0003048);湖北省教育厅重大项目(2001Z08002)

摘　　要：通过改进的连续浸提实验,将富Se土壤中Se的赋存状态分成5种形态:水溶态、可交换态、酸溶态(碳酸盐及铁锰氧化物结合态)、有机物结合态、残渣态,并用HG-AFS法检测了各形态Se和总Se,结果表明,该提取方法的精密度和准确度好,简便﹑可靠易行。A modified sequential extraction procedure for Selenium of different forms in soil was developed. By the procedure, Selenium in soil was divided into five fractions: (1) Water soluble, (2) exchangeable, (3) acid soluble, (4) organic compound and (5) residual. All the five forms of Selenium and total Selenium were determined with HG-AFS, showing that the method is precise, accurate, reliable and easy to operate..

关 键 词：连续浸提 富Se土壤 Se形态 HG-AFS法 

分 类 号：S153.61[农业科学—土壤学]