高频燃烧-红外碳硫仪用于农用地土壤质量调查样品中碳硫的快速测定  

Rapid Determination of Carbon and Sulfur in Farmland Soil Samples by High Frequency-Infrared Carbon-Sulfur Analyzer

作　　者：张明杰 戴雪峰 陆丁荣 王杰 

机构地区：[1]浙江省地质矿产研究所,浙江杭州310007

出　　处：《岩矿测试》2010年第2期139-142,共4页Rock and Mineral Analysis

基　　金：浙江省地质勘查科研项目资助(200803)

摘　　要：应用高频燃烧-红外碳硫分析仪测定农用地土壤质量调查样品中碳、硫的含量,解决了土壤样品中碳、硫测定过程中存在的基体影响和低电磁感应等问题。对样品称样量、助熔剂的加入量、氧气流量等测定条件进行优化试验,用国家一级标准物质验证了方法准确度和精密度,相对误差(RE)小于10%,相对标准偏差(RSD,n=8)总碳小于2%,硫小于9%。方法能够满足农用地土壤质量调查样品的分析质量要求。A method for rapid determination of carbon and sulfur in farmland soil samples by high frequency- infrared absorption spectrometry was reported in this paper. The analytical conditions such as sample amount, flux added, oxygen flow rate, etc. have been tested and optimized. The accuracy and precision of the method were tested and accuracy of RE 〈 10%, precision of 〈 2% RSD for total carbon （ n = 8 ） and 〈 9% RSD for sulfur （n = 8 ） were obtained. The method solves the problems such as matrix effect and low electromagnetic response in the determination of carbon and sulfur in soil samples. The method has been applied to the determination of carbon and sulfur in farmland soil samples with satisfactory results.

关 键 词：碳 硫 高频燃烧-红外吸收法 农用地土壤 

分 类 号：O613.71[理学—无机化学] O613.51[理学—化学]