电感偶合等离子体发射光谱法(ICP-OES)测定卡林型金矿冶金样品中的金  

Determination of gold in metallurgical samples from Carlin-type gold deposits by Inductively Coupled Plasma Optical Emission Spectrometry

作　　者：马荣锴[1] 冯吉福[1] 袁江涛[1] 

机构地区：[1]中国有色桂林矿产地质研究院有限公司,广西桂林541004

出　　处：《矿产与地质》2017年第1期194-198,共5页Mineral Resources and Geology

基　　金：广西自然科学基金项目(编号:2016GXNSFBA380143);广西重点研发计划(编号:桂科AB16380023)共同资助

摘　　要：对卡林型金矿冶金样品中金的测定进行了探索实验,对试样进行预焙烧,采用王水溶样,泡沫塑料吸附,灰化,再用王水溶解残渣,用电感耦合等离子体发射光谱仪(ICP-OES)测定溶液中的金。在选定的实验条件下,金的质量浓度在0.1mg/L^5.0mg/L范围内与其对应的发射强度呈线性关系,校准曲线的线性相关系数r能达到0.9999,方法检出限为0.008mg/L。方法应用于卡林型金矿冶金样品中不同含量金的测定,结果与原子吸收法(AAS)相一致。两种金矿标准物质的测定结果与标准值吻合,相对标准偏差(RSD,n=5)在0.5%~3.0%之间。按实验方法进行全流程加标回收试验,金回收率在96%~105%之间。In the exploratary experiments on metallurgical samples from Carlin-type gold deposits, after process steps including preroasting of specimens, dissolution with aqua regia, adsorption with polyfoam, as- hing, and dissolution of sludge with aqua regia, the authors determined the gold in the solution by using inductively coupled plasma optical emission spectrometry （ICP-OES）. Under the experimental conditions as determined, within the range of 0.1-5.0 mg/L the mass concentration of gold was linear to the corresponding emission intensity, while the linear correlation coefficient （r） of calibration curve was up to 0. 9999 with a detection limit of 0. 008 mg/L. The proposed method was applied to the determination of gold in metallurgical samples from Carlin-type gold deposits, and the results were consistent with those produced by atomic absorption spectroscopy （AAS）. Then the authors applied the method on two different gold reference materials and the results were in agreement with certified values with relative standard deviation （RSD, n = 5） ranging from 0.5% to 3.0%. When the proposed method was applied in the entire procegs of standard sample recovery tests, the gold recovery ranged between 96% and 105%.

关 键 词：ICP-OES 金 泡沫塑料 吸附 卡林型金矿 

分 类 号：O657.31[理学—分析化学] TH744.11[理学—化学]