摘要
探讨了加热柱芯电极的蒸发和激发过程。利用ＺｎＯ为载体，Ｆｅ_２Ｏ_３作增强剂，ＭｇＯ作稳定剂，碘溶液作卤化剂，样品不需化学预富集，使测金的检出限达到１：５万化探扫面要求，同时还可测定砷、铋、锑。各元素检出限分别为：１．ｌ×ｌ０－９Ａｕ，ｌｘ１０－６Ａｓ，０．ｌ×ｌ０－６Ｂｉ，２×ｌ０－６Ｓｂ，试样分析的ＲＳＤ（ｎ＝１０）在４．２％～１９．８％范围，质量符合要求。
A method for the determination of Au, As, Bi and Sb in geochemical samples by emission spectrometry with a heating axis electrode was developed. The mechanism of solid sample evaporation and excitation by this method was discussed. Samples were analyzed directly by using Fe_2O_3 as an enhancer,MgO as a stabilizer, I_2 as a halogenating agent and without any chemical preconcentration. The detection limits for Au,As Bi and Sb are 1.1x10￣(-9), 1x10￣(-6), 0.1x10￣(-6)and 2 x10￣(-6) respectively.The satisfactory results for these elements in geochemical samples were obtained with precision of 4.2% ～19.8% RSD(n=10).
出处
《岩矿测试》
CAS
CSCD
北大核心
1996年第2期129-134,共6页
Rock and Mineral Analysis
关键词
原子发射光谱
金
砷
铋
锑
矿样
emission spectrometry
geochemical sample
gold
arsenic
antimony
bismuth
