高频燃烧-红外碳硫仪测定岩心钻探样品中碳硫

Determination of carbon and sulfur in drilling core samples by high frequency combustion- infrared carbon and sulfur analyzer

应用HW-2006型高频燃烧-红外碳硫仪分析测定了岩心钻探样品中的碳和硫,以纯铁屑、锡粒和钨粒为助熔剂,通过条件实验优化了样品称样量,助熔剂的种类、加入顺序和用量以及分析时间。该方法测定岩心钻探样品中碳和硫的检出限分别为0.004 6%和0.001 8%,相对标准偏差（RSD）为0.47%-3.29%,加入标准物质回收率为87.57%-107.51%,其精密度和准确度满足地球化学普查的要求。该方法具有操作简便、快速、稳定性好等特点,适用于大批量钻探岩心样品的分析测试。

The determination of carbon and sulfur in drilling core samples by HW- 2006 high frequency combustion – infrared carbon and sulfur analyzer was reported in this study. Condition experiments optimized sample weighing amount and the type,addition sequence and dosage of flux and the analysis time by adding pure ion filings,tin and tungsten grains as the flux. The detection limits of the method are 0. 004 6 % and 0. 001 8 % for carbon and sulfur,respectively; The RSD is 0. 47 % - 3. 29 %; the recovery is 97. 57 % - 107. 51 % by adding reference materials; the precision and accuracy both meet the requirement of geochemical survey. This method is characterized by simple operation,rapid determination and stability,and is suitable for analysis of mass drilling core samples.