岩矿测试2025，Vol.44Issue(2)：268-278,11.DOI:10.15898/j.ykcs.202403130044
次氯酸氧化ICP-MS同时测定金矿石中金和伴生元素银铜铅锌砷锑
Simultaneous Determination of Au and Associated Elements Ag,Cu,Pb,Zn,As and Sb in Gold Ore by ICP-MS with Hypochloric Acid Oxidation
摘要
Abstract
Gold ore contains a certain amount of gold,silver,copper,lead,zinc,arsenic,and antimony.Gold needs to be determined after roasting,digestion and enrichment;arsenic and antimony are lost after roasting,while silver,copper,lead,zinc,arsenic and antimony need to be separately determined,which is extremely cumbersome.The experiment utilized the oxidizing properties of hypochlorous acid to oxidize carbonaceous materials and sulfides in a nitric acid medium instead of sample roasting.Combined with offline internal standards,a method was established for the simultaneous determination of gold,silver,copper,lead,zinc,arsenic,and antimony by ICP-MS.The amount of hypochlorous acid,digestion time,internal standard selection,and interfering elements were optimized.The results showed that the carbonaceous and sulfides materials were oxidized under the conditions of 10.0000g of the sample,20mL of nitric acid and 5mL of hypochlorous acid with using a heating plate to deal with them until near-dryness.According to the experimental method,gold,silver,copper,lead,zinc,arsenic,and antimony were determined in five different types of gold ore samples,the results were consistent with the national standard method,and the relative standard deviations(RSDs,n=7)were less than 4.71%.This method solves the problem of simultaneous determination of gold,silver,copper,lead,zinc,arsenic and antimony,which is simple and convenient.The BRIEF REPORT is available for this paper at http://www.ykcs.ac.cn/en/article/doi/10.15898/j.ykcs.202403130044.关键词
次氯酸/电感耦合等离子体质谱法/金矿石/金/伴生元素Key words
hypochloric acid/inductively coupled plasma-mass spectrometry/gold ore/gold/associated elements分类
化学引用本文复制引用
王啸,刘玖芬,甘黎明,李荣华,王西,魏欣,何涛..次氯酸氧化ICP-MS同时测定金矿石中金和伴生元素银铜铅锌砷锑[J].岩矿测试,2025,44(2):268-278,11.基金项目
中国地质调查局地质调查项目(DD20242769) （DD20242769）
中国地质调查局自然资源综合调查指挥中心科技创新基金项目(KC20230012) （KC20230012）
中国地质调查局地质调查项目"全国金矿重点调查区调查评价项目"(DD20230060) （DD20230060）
