微波消解-电感耦合等离子体质谱法/KED模式同时测定土壤中38种元素OA
Simultaneous determination of 38 elements in soil by microwave digestion-inductively coupled plasma mass spectrometry/KED mode
建立了硝酸-氢氟酸(HNO3-HF)体系-微波消解-电感耦合等离子体质谱法测定土壤中的 38 种元素.在 0.1000 g 试样中加入 3 mL HNO3 和 2.0 mL HF,微波消解仪按实验条件程序升温,可完全消解样品.电感耦合等离子体质谱仪(ICP-MS)以 72Ge、103Rh、187Re 为混合内标,KED模式进行测定.在优化条件下对国家标准物质进行测定,各元素标准曲线的相关系数均大于 0.9996,检出限为 0.004～0.6 μg/g.相对标准偏差为0.91%～6.0%,对数差均小于 0.08,结果说明本方法准确可靠.
A method for the determination of 38 elements in soil by microwave digestion-inductively coupled plasma mass spectrometry with HNO3-HF was proposed.The samples were completed decomposed by a mixture acid of 3 mL HNO3-and 1.5 mL HF in microwave digestion tubes for 0.1000 g of sample.Taking 72Ge,103Rh,187Re as the mixed internal standard elements,using He collision mode to eliminate the interference of polyatomic ions,the sample solution was directly determined by inductively coupled plasma mass spectrometry(ICP-MS).Under the optimized conditions,the certified reference materials of geological samples were determined,the calibration curves were obtained with correlation coefficients above 0.9996,the limits of detection of the method were 0.004-0.6 μg/g.The determined values were in good agreement with the certified values.The standard deviations of the method were 0.91%-6.0%and the accuracy was not higher than 0.08.This method can meet the requirements for the geological samples.
刘璐;孙凯茜;刘爱琴;邹佳洁;李龙飞;朱永晓;张宁
河北省地质实验测试中心,河北 保定 071051||河北省矿产资源与生态环境监测重点实验室,河北 保定 071051河北省地质实验测试中心,河北 保定 071051||河北省矿产资源与生态环境监测重点实验室,河北 保定 071051河北省地质实验测试中心,河北 保定 071051||河北省矿产资源与生态环境监测重点实验室,河北 保定 071051河北省地质实验测试中心,河北 保定 071051||河北省矿产资源与生态环境监测重点实验室,河北 保定 071051河北省地质实验测试中心,河北 保定 071051||河北省矿产资源与生态环境监测重点实验室,河北 保定 071051河北省地质实验测试中心,河北 保定 071051||河北省矿产资源与生态环境监测重点实验室,河北 保定 071051河北省地质实验测试中心,河北 保定 071051||河北省矿产资源与生态环境监测重点实验室,河北 保定 071051
微波消解电感耦合等离子质谱法元素
microwave digestioninductively coupled plasma mass spectrometryelement
《中国土壤与肥料》 2026 (3)
262-267,6
河北省地矿局科研项目(454-0601-YBN-DONH、13000023P0069B410123C).
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