摘要
通过事先对有机碳含量较高的样品于1000℃下灼烧2 h,计算其烧失量,再将灼烧后的样品经Li_(2)B_(4)O_(7)(67%)和LiBO_(2)(33%)的混合熔剂熔融制样后,经X射线荧光光谱仪测定,能够有效地去除因有机质含量高导致的分析结果的偏差,总体的平均相对误差从11.1%减少到了4.5%,而且较湿法化学分析节省时间。分析结果可与湿法化学分析结果相媲美,准确度较直接压片分析方法有了大幅提高。
By burning the sample 2 hours with a high organic carbon at 1000℃in advance to calculate the loss on ignition,and then melting the burned sample with Li_(2)B_(4)O_(7)(67%)and LiBO_(2)(33%)solvent to prepare the sample and measuring it with X-ray fluorescence spectrometer,it can remove the analysis results deviations caused by high organic matter content effectively,the overall average relative error was reduced from 11.1%to 4.5%and it can save time compared to wet chemical analysis.The analysis results of this method deviate from the results of wet chemical analysis very little,and the accuracy is improved greatly compared with the direct tablet analysis.
作者
李亚
王英凯
张旭
张振华
LI Ya;WANG Yingkai;ZHANG Xu;ZHANG Zhenhua(Heilongjiang Geological and Mineral Experimental Testing Research Center,Harbin,Heilongjiang 150036,China)
出处
《中国无机分析化学》
CAS
北大核心
2021年第2期57-61,共5页
Chinese Journal of Inorganic Analytical Chemistry
基金
大兴安岭山区生态地质调查项目(D20191014)。
关键词
有机碳
X射线荧光光谱法
熔融制样
organic carbon
X-ray fluorescence spectrometry
melting flake
