利用化学方法消除氯干扰的土壤中有机碳测定方法

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英文篇名：The Method for Determination of Organic Carbon in Soils by Chemical Method to Eliminate Chlorine Interference 作者：贾双琳 ; 李长安 英文作者：JIA Shuang-lin;LI Chang-an;Guizhou Central Laboratory of Geology and Mineral Resources;School of Chemistry and Chemical engineering,Qiannan Normal University for Nationalities; 关键词：有机碳 ; 消除干扰 ; 化学方法 英文关键词：Organic carbon;;Eliminating interference;;Chemical method 中文刊名：GZDZ 英文刊名：Guizhou Geology 机构：贵州省地质矿产中心实验室;黔南民族师范学院化学化工学院; 出版日期：2019-06-15 出版单位：贵州地质 年：2019 期：v.36;No.139 语种：中文; 页：GZDZ201902013 页数：4 CN：02 ISSN：52-1059/P 分类号：95-98

摘要

在高锰酸钾外加热法测试土壤中有机碳的过程中,常遇到高含量氯离子对测试结果的正干扰,为解决此问题,本文提出了利用化学方法消除较高含量氯离子对测定土壤有机碳的干扰消除方法。在称取样品时,加入0. 15 g硫酸汞,消除样品中氯的干扰,通过对部分国家土壤、水系沉积物标准样品的分析测试,验证其方法准确度良好,方法的精密度为:5. 83%,可满足地质行业相关标准要求。
        In the process of measuring organic carbon in soil by potassium permanganate external heating method,the positive interference of high chlorine content to the test results is often encountered. In order to solve this problem,this paper proposed a method for determination organic carbon in soil which have high chlorine content. The method could eliminated the interference of high chlorine content by chemical method. Add 0.15 g of mercury sulfate to eliminate the interference of chlorine in the sample. Through the analysis and test of some national standard samples of soil and river sediments,the accuracy of the method is good,and the precision of the method was 5.83%. The analysis results showed that the method were matched the geological standard well.

引文

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