摘要
采用加罩电极发射光谱法测定了来自不同地区麦饭石样品和地质标样中36种痕量元素,对测定的最佳条件进行了系统研究。通过选择合适的曝光条件、内标元素和分析线对,连续测定了易挥发、中等挥发和难挥发元素。标样的测定值与认定值一致,标准偏差小于21%。对不同地区的样品测定结果表明:麦饭石中对人体有益的痕量元素含量高,而对人体有害的元素如砷、镉、铬、汞和铅等含量低。
Thirty-six trace elements in maifanite were determined with outer cover electrode atomic emission spectrometry. The optimal determination conditions were studied systematically also. By means of the optimization for the exposure conditions, internal standard elements and analytical line pairs,the easily,normal and hard vaporized elements in the maifanite were determined continuously. The determination results of geological certified reference materlal（GSD-2） were identical to the certified values, and the RSD was less than 21%. The results of the maifanites from different regions showed that the concentration of elements beneficial to human health were higher and the elements harmful to human health such as As, Cd, Hg,Cr and Pb were tiny in the maifanite.
出处
《冶金分析》
EI
CAS
CSCD
北大核心
2006年第2期73-75,共3页
Metallurgical Analysis
关键词
麦饭石
痕量元素
加罩电极
发射光谱
maifanite
trace element
outer cover electrode
atomic emission spectrometry
