电感耦合等离子体发射光谱法测定矿石中银的研究  

Determination of Silver in ores by inductively coupled plasma emission spectrometry

作　　者：游大虎 You Da-hu(Laboratory testing Center of Fujian Provincial Geological Brigade 121,Longyan,Fujian 364000,China)

机构地区：[1]福建省121地质大队化验测试中心,福建龙岩364000

出　　处：《福建分析测试》2021年第1期42-46,共5页Fujian Analysis & Testing

摘　　要：目前,实验室测定矿石中银的方法主要有银的光度法、火焰原子吸收光谱法、石墨炉原子吸收光谱法等等,为了更好的简化测量过程、提高工作效率,本文旨在建立更适宜的、能满足于高中低含量银的测试方法,采用电感耦合等离子体光谱法测定金属矿中银的含量。样品采用氢氟酸、硝酸、硫酸(体积比10:5:1)溶解,赶净氟和破坏有机物后,经(1+1)硝酸溶解后直接稀释定容,针对银的4条分析谱线进行测试研究。本文通过对涵盖高银中低含量的7个国家一级标准物质进行测试,通过与标准值比较,统计标准物质测量结果的精密度、准确度。结果表明,矿石中银的测定采用电感耦合等离子体发射光谱法在谱线328.068nm下测量,准确度最高、精密度最好、重现性也高,同时能在不增加运行成本的基础上进行样品中的多种元素测定,非常值得研究推广应用。At present,the method of laboratory determination of boc ore are mainly silver photometry and flame atomic ab⁃sorption spectrometry,graphite furnace atomic absorption spectrometry,and so on,in order to simplify the measuring pro⁃cess,improve work efficiency,the purpose of this paper is to establish a more appropriate,can be satisfied with silver testing methods,including content using inductively coupled plasma spectrometry for determining the content of metal boc.The samples were dissolved by hydrofluoric acid,nitric acid and sulfuric acid(volume ratio 10:5:1).After removing fluorine and destroying organic matter,the samples were directly diluted and volumetric after being dissolved by(1+1)nitric acid.The 4 analytical lines of silver were tested and studied.In this paper,seven national level I standard substances with high silver content and low content were tested,and the precision and accuracy of the standard substance measurement results were calculated by comparing with the standard value.The results show that the determination of silver in ores by inductive⁃ly coupled plasma emission spectrometry at 328.068nm has the highest accuracy,the best precision and the highest repro⁃ducibility,and it can also be used to determine various elements in samples without increasing the operating cost,which is worthy of research and application.

关 键 词：电感耦合等离子体发射光谱法 铜铅锌矿石 银矿石 铜矿石 铅矿石 铅锌矿石 银 

分 类 号：O657.7[理学—分析化学]