Determination of five heavy metals in coal gangue by ICP-MS with high pressure sealing
ZHANG Ge1,2, WEN Yu-cheng1, FU Yao1, LIU Jing-jun1, LI Xiao-xing1, DI Ya-xiao1, PANG Bo1
1. Cleaner Production and Circular Economy Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 2. School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
Abstract: Five kinds of heavy metals (Cr,as,Cd,Hg and Pb) in coal gangue are determined by inductively coupled plasma mass spectrometry (ICP-MS) in HF∶H2O2∶NO2Cl system.The contents of 52Cr ,75As ,114Cd ,202Hg and 208Pb are measured.Four internal standard materials,including Sc (45Sc),Yttrium (89Y),In (115In) and Bi (209Bi),are used to correct the matrix signals and restrain the drift.The accuracy of the method is verified through determining China's national soil standard samples (GBW07450,GBW07446,GBW07453,GBW07454) in Xinjiang,Inner Mongolia,Guangdong and Shaanxi.In the range of 0.1-100 ng·mL-1 for Cr,As,Cd,Hg and Pb,the linear correlation coefficients of calibration curves are all greater than 0.999 5,and the detection limits of analytical methods are all less than 0.031 ng·mL-1.The relative root-mean-square deviation (n=11) is less than 3.47%,and the ratio of quality control results to theoretical values is in the range of 95%-105% as this method is used to analyze actual samples.
张歌, 文玉成, 傅尧, 刘菁钧, 李晓星, 狄雅肖, 庞博. 高压密闭ICP-质谱仪测定煤矸石中国家重点严控5类重金属[J]. 现代化工, 2022, 42(10): 242-246.
ZHANG Ge, WEN Yu-cheng, FU Yao, LIU Jing-jun, LI Xiao-xing, DI Ya-xiao, PANG Bo. Determination of five heavy metals in coal gangue by ICP-MS with high pressure sealing. Modern Chemical Industry, 2022, 42(10): 242-246.
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