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连续光源原子吸收光谱法直接测定矿石中金
- 作者：
- 朱国忠|喻生洁|徐艳燕|孙瑞|马群|郝凤梅|吴雪琳
- 作者单位：
- 国家镍钴新材料工程技术研究中心&甘肃精普检测科技有限公司|金川集团有限公司检测中心|国家镍钴新材料工程技术研究中心&甘肃精普检测科技有限公司|国家镍钴新材料工程技术研究中心&甘肃精普检测科技有限公司|国家镍钴新材料工程技术研究中心&甘肃精普检测科技有限公司|国家镍钴新材料工程技术研究中心&甘肃精普检测科技有限公司|国家镍钴新材料工程技术研究中心&甘肃精普检测科技有限公司
基金项目：
- 金川集团科研项目基金（2016-046）
详细信息：
- 作者简介：
- 朱国忠（1968—），男，浙江金华人，正高级工程师，从事有色金属分析检测技术研究与管理工作；甘肃省金昌市金川区金川集团选冶化工区电解路，国家镍钴新材料工程技术研究中心，730101；E-mail：zgz2006@yeah.net
- 通讯作者：
- E-mail：yushengjie@jnmc.com,13830566598
- PDF下载
Continuous light source atomic absorption spectrometry for direct determination of gold in ores
- English Author：
- National Nickel-cobalt New Material Engineering Technology Research Center&Gansu Jingpu Testing Technology Co.,Ltd.|Testing Center of Jinchuan Group Co.,Ltd.|National Nickel-cobalt New Material Engineering Technology Research Center&Gansu Jingpu Testing Technology Co.,Ltd.|National Nickel-cobalt New Material Engineering Technology Research Center&Gansu Jingpu Testing Technology Co.,Ltd.|National Nickel-cobalt New Material Engineering Technology Research Center&Gansu Jingpu Testing Technology Co.,Ltd.|National Nickel-cobalt New Material Engineering Technology Research Center&Gansu Jingpu Testing Technology Co.,Ltd.|National Nickel-cobalt New Material Engineering Technology Research Center&Gansu Jingpu Testing Technology Co.,Ltd.
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
研究建立了高分辨率连续光源原子吸收光谱法直接测定矿石中金的方法，并对介质及共存元素等影响因素进行了优化。结果表明：样品过180目筛，采用盐酸＋硝酸＋高氯酸除硫，王水溶解样品，2 %～5 %王水作为介质，在波长242.80 nm、建模扣除背景模式下采用高分辨率连续光源原子吸收光谱法直接测定矿石中的金；共存元素铜、镍、铁、钙?⒚尽⒐璧榷圆舛挥杏跋臁１痉椒ú舛ń峁南喽员曜计畈淮笥5.0 %，加标回收率96.7 %～104.0 %，且测定结果与标准值及火试金—分光光度法测定结果一致，准确度和精密度满足要求。
关键词:
连续光源原子吸收光谱法；直接测定；矿石；金；干扰去除
Abstract:
A high-resolution continuous light source atomic absorption spectrometry to directly determine gold in ores is established in the study.The influence factors such as media and co-existing elements are optimized.The results show that the sample passed through a 180-mesh sieve,hydrochloric acid＋nitric acid＋perchloric acid was used to remove sulfur,and the sample was dissolved in aqua regia at 2 %-5 % of aqua regia medium,and at the wavelength of 242.80 nm,the gold content in the ore is directly determined by high-resolution continuous light source atomic absorption spectrometry in modeling background exclusion mode.The coexiting elements Cu,Ni,Fe,Ca,Mg and Si impose no impact on the determination.The relative standard deviation is not more than 5.0 %,the recovery of reference material is 96.7 %-104.0 % and the result is consistent with the standard value and the result of fire assay-spectrophotometry.The accuracy and precision both meet the requirement.
Keywords:
continuous light source atomic absorption spectrometry;direct determination;ore;gold;interference elimination
