高频红外碳硫法同时测定区域地球化学样品中的碳和硫

邓云江; 钟蕾; 周小林; 邵禄文; 陈婧

邓云江,钟蕾,周小林,邵禄文,陈婧.高频红外碳硫法同时测定区域地球化学样品中的碳和硫[J].贵州地质,2025,42(1):110-116

高频红外碳硫法同时测定区域地球化学样品中的碳和硫

Simultaneous Determination of Total Carbon and Sulfur in Regional Geochemistry Samples by High-frequency Infrared Carbon and Sulfur Analyzer

投稿时间：2024-08-02

DOI：

中文关键词: 高频红外碳硫仪碳硫区域地球化学样品

英文关键词:High-frequency infrared carbon sulfur meter Carbon Sulfur Regional geochemical samples

基金项目:贵州优势特色矿产实验测试科技创新人才团队(黔地矿科合﹝2024﹞TD003号)资助

作者	单位
邓云江	贵州省地质矿产中心实验室,贵州贵阳550018 贵州省战略矿产智慧勘查重点实验室,贵州贵阳550081 自然资源部基岩区矿产资源勘查工程技术创新中心,贵州贵阳550081
钟蕾	贵州省地质矿产中心实验室,贵州贵阳550018 贵州省战略矿产智慧勘查重点实验室,贵州贵阳550081 自然资源部基岩区矿产资源勘查工程技术创新中心,贵州贵阳550081
周小林	贵州省地质矿产中心实验室,贵州贵阳550018 贵州省战略矿产智慧勘查重点实验室,贵州贵阳550081 自然资源部基岩区矿产资源勘查工程技术创新中心,贵州贵阳550081
邵禄文	贵州省地质矿产中心实验室,贵州贵阳550018
陈婧	贵州省地质矿产中心实验室,贵州贵阳550018 贵州省战略矿产智慧勘查重点实验室,贵州贵阳550081 自然资源部基岩区矿产资源勘查工程技术创新中心,贵州贵阳550081

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中文摘要:

采用COREY-220高频红外碳硫仪，建立一套操作性强、检出限低、适用范围广的检测方法，本方法适用于区域地球化学样品中不同含量碳和硫的快速、准确、高效的检测。该方法称样量为01 g时，分别建立了C1、C2、S1、S2 四条标准曲线，相关系数r均＞0999，方法检出限均为0002%；测定下限均为0007%，线性关系好、方法检出限低。通过对样品称样量、助溶剂添加顺序及添加量的筛选试验，确定“0100 0 g样品+05 g纯铁+18 g钨粒”时，样品充分燃烧，其测定值正确度较高。选取12种不同碳、硫含量标准物质进行正确度、精密度试验(n=12)，其中，不同碳含量测定时，相对误差(RE)在-441%557%之间；相对标准偏差(RSD)在032%280%之间；不同硫含量测定时，12种标准物质相对误差(RE)在-736%704%之间；相对标准偏差(RSD)在053%296%之间。经实际样品验证，该方法较适用于区域地球化学样品中碳和硫的分析测定。

英文摘要:

A strong operational，low detection limit，wide range of application andgood accuracy method was used to establish by high-frequency infrared carbon-sulfur analyzerThe method was suitable for the rapid，accurate and efficient detection of different contents of carbon and sulfur in the regional geochemical samples in the regional determination domainThere are four standard curves of C1，C2，S1 and S2 were established，with 01g sample The correlation coefficients were > 0999 and the detection limits of the method were < 0002%The lower limit of determination was 0007%，and the linearity relationship was good，and the detection limit of the method was lowThrough the screening test of sample weighing，co-solvent addition sequence and addition amount，it was determined that when “01000g sample + 05g pure iron + 18g tungsten particles”，the sample was completely burned and the accuracy of the Carbon-Sulfur elements determination result is highDifferent carbon and sulfur reference materials were selected for accuracy and precision tests (n=12)，the relative error (RE) of different carbon content reference materials was -441%557%The relative standard deviation (RSD) was 032%280%；When different sulfur content was determined，RE was between -736%704%RSD between 053%296%After verification by actual samples，the established method is more suitable for the determination of carbon and sulfur in regionalgeochemistry Samples

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