土壤中锌的形态转化、影响因素及有效性研究进展

Transformation and Influence Factors of Speciation of Zinc in Soils and Its Effect on Zinc Bioavailability:A Review

土壤锌污染日益严重,锌产生的生物毒性越来越受到人们的关注,而锌在土壤中的生物毒性与其赋存形态密切相关。综述了近年来国内外土壤中锌生物毒性与锌形态研究的最新进展,其中包括土壤中锌的主要结合形态及其影响因素、锌的形态变化与其生物有效性的关系、锌的形态分析技术最新发展趋势及土壤中锌毒性预测模型等。对土壤中锌的原位形态及未知形态的表征技术以及建立具有普适性的有效性测定方法将是未来研究的热点问题之一。

Increasing pollution of zinc in soils and the toxicity caused by zinc has been arousing people＇s great concerns recently, however, the bioavailability of zinc is mainly dependent on its speciation in soil. This paper reviewed the research advancements on the speciation analysis, bioavailability and eeotoxicology of zinc in soils recently. The speciation distributions of zinc and its influence factors in soil, the ef- fect of speciation on the bioavailability of zinc to organism and the development on the determination of zinc speciation in soils were also sum- marized in this paper. The prospect of related fields, e.g. the in-stiu determination of the various speciation of zinc in soils, characteristics of the unknown forms of Zn and the protocol of determination of bioavailability of Zn will be the research focus of related fields.