高频燃烧-红外碳硫仪测定地质样品中的碳和硫  

Determination of Carbon and Sulfur in Geological Samples by High Frequency IR-Absorption Spectrometric Method

作　　者：史世云[1] 温宏利[1] 李冰[1] 何红蓼[1] 吕彩芬[1] 

机构地区：[1]国家地质实验测试中心,北京100037

出　　处：《岩矿测试》2001年第4期267-271,共5页Rock and Mineral Analysis

基　　金：国土资源部地质大调查项目 (DKD 990 4 0 13 )

摘　　要：应用HIR - 944B型高频 -红外碳硫分析仪 ,对不同地质样品中碳、硫的测定进行了研究 ,称样 3 0～ 6 0mg ,加入 0 .4g纯铁屑及 1 .7g钨粒助熔剂 ,高温燃烧分解试样 ,红外检测 ,可定量地质样品中质量为 0～ 0 .9mg的硫及质量为 0～ 1 5mg的碳。用该仪器测定地质标样中碳、硫的结果与标准值符合 ,碳和硫 1 1次测定的RSD分别是 <2 .6 %和 <3 .0 %。A method for the determination of carbon and sulfur in various geological samples by high frequency IR absorption spectrometry was reported in this paper. 30～60 mg of powder sample mixed with 0.4 g of pure iron filings and 1.7g of tungsten pellets (as flux) in a ceramic crucible was melt by a high frequency furnace and the carbon and sulfur in the sample was then determined quantitatively by an IR absorption spectrometer. The concentration ranges determined by this method were 0～15 mg for carbon and 0～0.9 mg for sulfur. The method has been applied to the determination of carbon and sulfur in geological reference samples. The results are in agreement with certified values with precision of <2.6% RSD for carbon ( n =11) and < 3% RSD for sulfur ( n =11).

关 键 词：碳 硫 红外分析仪 地质样品 铁屑 钨粒 

分 类 号：P575.4[天文地球—矿物学]