摘要
建立了采用直接加混合酸(5 mL氢氟酸、5 mL硝酸、5 m盐酸L和1 mL高氯酸)溶解样品,10 mL HCl(1+1)提取样品,电感耦合等离子体发射光谱(ICP-OES)法测定银精矿中氧化镁含量的方法。方法检出限为0.0016%,测定下限为0.0064%,经富铜(银)矿石成分分析国家标准物质GBW07164验证,相对误差为0.43%;应用于实际样品分析,与标准方法火焰原子吸收光谱法测定结果对比,分析结果一致,方法的相对标准偏差(RSD,n=6)均小于4%。方法简便快速准确,结果满意。
A method was established for the determination of magnesium oxide content in silver concentrate by inductively coupled plasma optical emission spectrometry after the samples were directly digested by adding mixed acids(5 mL hydrofluoric acid,5 mL nitric acid,5 mL hydrochloric acid and 1 mL perchloric acid),and extracted by 10 mL HCl(1+1).The detection limit and determination limit of the method were 0.0016%and 0.0064%respectively,which is verified by GBW07164,the national standard substance for the composition analysis of rich copper(silver)ore,and the relative error was 0.43%.In the actual sample analysis,the relative standard deviation(RSD,n=6)of the method was less than 4%compared with the standard method of flame atomic absorption spectrometry,and the analysis results were consistent.The method is simple,rapid and accurate with satisfactory results.
作者
赵昕
肖柳婧
金东彦
汤行
ZHAO Xin;XIAO Liujing;JIN Dongyan;TANG Xing(Geological Testing Institute of Hunan Province,Changsha,Hunan 410007,China)
出处
《中国无机分析化学》
CAS
北大核心
2021年第4期50-53,共4页
Chinese Journal of Inorganic Analytical Chemistry
关键词
银精矿
氧化镁
电感耦合等离子体发射光谱法
silver concentrate
magnesium oxide
inductively coupled plasma optical emission spectrometry
