HPLC-ICP-MS联用测定土壤中总硒含量  

Determination of Total Selenium in Soil with HPLC-ICP-MS

作　　者：李伟 LI Wei(Shenzhen Licheng Detection Technology Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳市利诚检测技术有限公司,广东深圳518000

出　　处：《山东化工》2024年第22期187-189,193,共4页Shandong Chemical Industry

摘　　要：本研究拟使用HPLC-ICP-MS联用实现新的土壤中总硒含量的测定方法。结果表明:当土壤样品量为100 mg,定容体积为25 mL时,本研究在标准溶液质量浓度范围为0~100μg/L,相关线性系数为0.9998,砷的检出限为0.000 36 mg/kg。在3种不同浓度的标准物质测定结果均在标准值范围内,其相对误差分别为-3.39%~2.62%,-1.97%~2.22%,-2.78%~0.91%,其相对标准偏差RSD分别为4.72%,3.07%,2.48%。采用HJ 680的方法与本研究对华南某地区水稻田土壤的实际样品进行方法比对相对标准偏差RSD分别为4.19%,7.32%,相对误差为0.81%,HPLC-ICP-MS联合技术具有更高的精密度。This study intends to use HPLC-ICP-MS to achieve a new method of total selenium content in soil.The results showed that when the soil sample size was 100 mg and the fixed volume was 25 mL,the concentration of the standard solution ranged from 0 to 100μg/L,the correlation linear coefficient was 0.9998,and the detection limit of arsenic was 0.00036 mg/kg.The results of three different concentrations of standard substances were within the range of standard values,and the relative errors were-3.39%~2.62%,-1.97%~2.22%,-2.78%~0.91%,and the relative standard deviation RSD was 4.72%,3.07%,2.48%,respectively.HJ 680 and the actual samples compared with the relative standard deviation RSD of 4.19%,7.32%,respectively,relative error of 0.81%,and the HPLC-ICP-MS technique has higher precision.

关 键 词：高效液相色谱 电感耦合等离子体串联质谱仪 土壤 硒 

分 类 号：X83[环境科学与工程—环境工程]