摘要
水体沉积物中磷的分级提取没有统一的方法,大多数的提取方法只对沉积物中无机磷(IP)进行了研究,有机磷(OP)是作为一个整体被研究,OP的形态尚不清楚。文章探讨了SMT法、Ivanoff法和Golterman法三种方法对湖泊沉积物中磷形态提取的特征,分析了各方法应用于IP和OP形态提取的联系和差别。结果表明SMT法提取的钙磷(Ca-P)是Golterman法提取Ca-P的16倍,Golerman法提取的铁铝结合态磷(Fe/Al-P)是SMT法提取的近3倍。从OP提取结果来看,Goterlman法>Ivanoff法>SMT法,Golterman法和Ivanoff法提取的酸可提取有机磷相差较大,其他形态OP含量则相当。研究结果对于沉积物磷形态分析提取方法的合理选择具有指导意义。
There is no defined methods to extract phosphorus from lacustrine sediment.Most methods are applied to the extraction of inorganic phosphorus（IP） from lacustrine sediment.Organic phosphorus（OP） is extracted as a whole package and no fraction information provided is available.Three extraction methods,including standard measurement test（SMT）,Ivanoff and Golterman methods are presented on the extraction of IP and OP.The results showed that Ca-bound phosphorus（Ca-P） extracted by SMT method was 16 times of that by Golterman method.Fe/Al-bound phosphorus（Fe/Al-P） extracted by Golterman method was almost 3 times of that by SMT method.The rank order of the OP extracts by different methods was namely Goterlman method Ivanoff method SMT method.There was still a great difference on the acid bound OP extracts between Golterman and Ivanoff method,while the other OP fractions were almost equal.The results are helpful for choosing the appropriate extraction method for the research of P fractions from lacustrine sediment.
出处
《岩矿测试》
CAS
CSCD
北大核心
2011年第3期276-280,共5页
Rock and Mineral Analysis
