VarioTOC对页岩及土壤样品中TOC的测定

VarioTOC for shale and the determinationof TOC in soil samples

采用VarioTOC法测定页岩和土壤样品中的TOC,对仪器自带标样(Cat No B2152-Certificate No207835)和国家一级标准物质GBW07423、GBW07427、GBW07363进行测定,该方法的相对标准偏差3.01%~4.93%,方法的检出限为(3s)0.012%,加标回收率为96.8%~102.6%,结果表明该方法具有很好的准确度和精密度。该测定方法与其它方法相比具有灵敏度高、干扰少、测定范围广、可操作性强等优势,适用于页岩及土壤样品中TOC的测定。

The VarioTOC method was used to determine the TOC in shale and soil samples .The instrument standard （CatNo B2152-CertificateNo 207835） and national standard materials GBW07423,GBW07427, GBW07363 were measured.The relative standard deviation of the method was 3.01% - 4.93% .The detection limit （3s） was 0.012% and the recovery rate was 96.8% - 102.6% .The results showed that the method had good accu- racy and precision.Compared with other methods,the method has the advantages of high sensitivity,low interference , wide measurement range and strong operability.It is suitable for the determination of TOC in shale and soil samples.