沉积物中铁的化学相态分析进展  

The Analytical Development of Low-Temperature Particulate Fe Speciation

作　　者：李超[1] 舒劲松[1] 许斐[1] 杨守业[1] 

机构地区：[1]同济大学海洋地质国家重点实验室,上海200092

出　　处：《地球科学（中国地质大学学报）》2013年第3期454-460,共7页Earth Science-Journal of China University of Geosciences

基　　金：中国博士后科学基金(No.2012M511129);国家自然科学基金(Nos.41225020;41076018)

摘　　要：元素铁因其在地球早期环境演化和在海洋初级生产力中的重要角色,是目前全球变化与地球化学研究的热点.铁元素的相态分析,对于深入了解其在环境中迁移、转化及生物的吸收利用,都具有重要意义.回顾沉积物中铁的化学相态分析方法发展过程,从早期的简单相态分析(degreeof pyritization,DOP),元素的顺序提取法(Tesser方法),到Raiswell和Poulton等学者提出针对Fe元素特定的相态分析法等.重点介绍较为常用的三步提取法和其在表生地球化学研究中的应用;结合目前国际上铁地球化学循环研究进展,提出Fe的化学相态分析的改进建议.Iron geochemistry has rapidly attracted great interest for global change research over the last two decades due to its significant role in the evolution o{ earth environment and in marine primary productivity. The speciation o{ particulate iron is critical for better un- derstanding of iron transformation, transitivity and bioavailability. This paper systematically reviews the analytical development of low- temperature particulate Fe speciation, including the degree of pyritization （IX）P）, Tessier＇s sequential extraction method, and specific iron extraction procedure The application of three-step iron extraction is introduced, and some suggestions are given for the future iron speciation analysis based on the latest development of iron geochemical study.

关 键 词：铁 沉积物 化学相态 发展历史 地球化学 

分 类 号：P595[天文地球—地球化学] P76[天文地球—地质学]