连续提取沉积物中硫的形态分析方法  

A Morphological Analysis Method for Continuous Extraction of Sulfur from Sediments

作　　者：唐珂 左嘉 Tang Ke;Zuo Jia(Nanchang Ecological Environment Monitoring Center of Jiangxi Province,Nanchang,China)

机构地区：[1]江西省南昌生态环境监测中心,江西南昌

出　　处：《科学技术创新》2024年第24期83-86,共4页Scientific and Technological Innovation

摘　　要：本文应用连续提取法从沉积物中提取不同形态的硫,在测定其含量的基础上分析了影响提取效果的因素。以可溶性硫和可交换态硫(H2O-S+A-S)、酸挥发性硫(AVS)两种硫形态为例,分别使用磷酸二氢钾和盐酸作为提取液从沉积物中进行提取。研究表明,提取液浓度、提取温度对可溶性硫和可交换态硫的提取效果无明显影响;延长提取时间可以提取到更多的可溶性硫和可交换态硫;提取液浓度对酸挥发性硫的提取效果影响显著,增加盐酸浓度可以从沉积物中获得更多的酸挥发性硫。This article applies the continuous extraction method to extract different forms of sulfur from sediments,and analyzes the factors that affect the extraction effect based on the determination of its content.Taking soluble sulfur,exchangeable sulfur(H2O-S+A-S),and acid volatile sulfur(AVS)as examples,potassium dihydrogen phosphate and hydrochloric acid were used as extraction liquids to extract from sediments.Research has shown that the concentration of extraction solution and extraction temperature have no significant impact on the extraction efficiency of soluble sulfur and exchangeable sulfur;Extending the extraction time can extract more soluble and exchangeable sulfur;The concentration of the extraction solution has a significant impact on the extraction efficiency of acid volatile sulfur.Increasing the concentration of hydrochloric acid can obtain more acid volatile sulfur from sediment.

关 键 词：连续提取沉积物 可溶性硫 可交换态硫 酸挥发性硫 

分 类 号：O657[理学—分析化学]