土壤中有机碘的转化、挥发及其影响因素研究进展  

Transformation, Volatilization and Influencing Factors of Organic Iodine in Soil: A Review

作　　者：孟璐瑶 温彩媚 段恩喆 王敏[1] 姚一杰 王祥学 马宵颖[1] 金洁 MENG Luyao;WEN Caimei;DUAN Enzhe;WANG Min;YAO Yijie;WANG Xiangxue;MA Xiaoying;JIN Jie(Department of Environmental Science and Engineering,North China Electric Power University,Baoding,Hebei 071003,China;College of Environmental Science and Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学环境科学与工程系,河北保定071003 [2]华北电力大学环境科学与工程学院,北京102206

出　　处：《土壤》2024年第3期471-479,共9页Soils

基　　金：国家自然科学基金项目(U2067215)资助。

摘　　要：土壤中有机碘的形成、转化及挥发对自然界中碘的迁移转化、生态安全、人体健康具有重要意义。本文基于前人对土壤中碘的相关研究,介绍了土壤中碘的形态和含量,重点对碘与有机质结合生成有机碘的反应机理、土壤中碘有机化的影响因素和土壤中有机碘的挥发进行了阐述。土壤中IO^(-)_(3)、I^(-)发生氧化还原反应,形成中间体物质HIO、I_(2),中间体通过化学转化和生物转化两种途径生成有机碘。土壤pH、氧化还原电位、有机质含量、酶活性、Fe/Mn氧化物及其氢氧化物浓度影响有机碘的形成和转化。有机碘的挥发在微生物和高等植物中主要通过在体内生成挥发性甲基碘的过程实现。Formation,transformation and volatilization of organic iodine in soil are of great significance to iodine transport and transformation in nature,ecological safety and human health.Based on previous studies on iodine in soil,this paper presented the form and concent of iodine in the soil,focusing on the reaction mechanism between iodine and organic matter to produce organic iodine,the factors influencing the organization of iodine in soil and the volatilization of organic iodine in soil.IO^(-)_(3) and I^(-) in the soil undergo redox reactions to form intermediate substances HIO and I_(2),which are transformed chemically and biologically to produce organic iodine.Soil pH,redox potential,organic matter content,enzyme activity,and concentration of Fe/Mn oxides and their hydroxides affect the formation and transformation of organic iodine.The volatilization of organic iodine is mainly through the process of producing volatile methyl iodine in vivo by microorganisms and higher plants.

关 键 词：有机碘 土壤 迁移转化 挥发性甲基碘 

分 类 号：X53[环境科学与工程—环境工程]