火焰原子荧光光谱法测定矿石样品中的银  

Determination of Silver in Ore Samples by Flame Atomic Fluorescence Spectroscopy

作　　者：谷周雷 许晓慧 刘卫 郭颖超 张晓敏[1] GU Zhoulei;XU Xiaohui;LIU Wei;GUO Yingchao;ZHANG Xiaomin(Tianjin North China Geological Explortion Bureau,Chengde,Hebei 067000,China)

机构地区：[1]天津华北地质勘查局,河北承德067000

出　　处：《中国无机分析化学》2023年第2期149-154,共6页Chinese Journal of Inorganic Analytical Chemistry

基　　金：承德高锶背景区发展富锶农产品产业技术研究项目(21327504D)。

摘　　要：为满足矿产资源领域地质找矿的检测工作需要,寻找一种操作便捷、重现性好、检出限低的检测方法,进行银元素的定量分析测试。通过对样品取样重量、复溶盐酸用量等参数进行条件优化实验,选出最优前期处理条件;对火焰原子荧光光谱仪进行条件实验,针对灯电流、燃气气流量等关键参数进行单一变量实验,最终确立了仪器最佳测试条件;测试方法精密度为1.8%~4.5%,准确度为0.46%~1.8%,检出限为0.4 g/t。方法具有稳定性好、灵敏度高、分析效率快等特点,适合在样品量多、精度要求高的实验室间推广。In order to meet the needs of geological prospecting in the field of mineral resources,it is of great significance to fabricate a convenient,reproducible and low detection limit detection method for the quantitative analysis and testing of silver element.By optimizing the parameters such as the sample weight and the amount of redissolved hydrochloric acid,the optimum pre-treatment conditions were selected.The condition test of the flame atomic fluorescence spectrometer is carried out,and the single variable test is carried out for the key parameters such as lamp current and gas flow rate.Finally,the best testing condition of the instrument was established.The precision of the method is 1.8%-4.5%,the accuracy is 0.46%-1.8%with the detection limit of 0.4 g/t.The method has the characteristics of good stability,high sensitivity and fast analysis efficiency,and is suitable for popularization among laboratories with large sample size and high precision requirements.

关 键 词：火焰原子荧光光谱法 银 矿石 

分 类 号：O657.31[理学—分析化学] TH744.16[理学—化学]