文章摘要
密闭消解-ICP-AES测定卡斯特催化剂中的铂
Determination of Platinum in Karstedt’s Catalyst by ICP-AES with Sealed-digestion
投稿时间:2017-11-06  
DOI:
中文关键词: 分析化学  密闭消解  电感耦合等离子体发射光谱法(ICP-AES)  卡斯特催化剂  
英文关键词: analytical chemiatry  sealed digestion  ICP-AES  Karstedt's catalyst  platinum
基金项目:
作者单位E-mail
马媛 贵研铂业股份有限公司贵研检测科技云南有限公司昆明 650106 mayuan@ipm.com.cn 
杨晓滔 贵研铂业股份有限公司贵研检测科技云南有限公司昆明 650106  
余尧 贵研铂业股份有限公司贵研检测科技云南有限公司昆明 650106  
韩艳波 贵研铂业股份有限公司贵研检测科技云南有限公司昆明 650106  
方卫 贵研铂业股份有限公司贵研检测科技云南有限公司昆明 650106  
李楷中 贵研铂业股份有限公司贵研检测科技云南有限公司昆明 650106 likzh@ipm.com.cn 
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中文摘要:
      由于含有碳和硅的有机物,卡斯特催化剂样品消解困难。采用密闭消解法,以盐酸-硝酸-氢氟酸混合酸为消解剂,在150℃加热7 h,可以去除样品中的碳和硅。所得试液中的其他杂质元素不产生干扰,可用ICP-AES直接测定铂量。结果表明,测定铂含量为500~20000 μg/g的卡斯特催化剂样品,相对标准偏差(RSD)<2%,加标回收率为96.3%~103.6%,测定结果与实际样品名义值相符,可满足生产分析要求。
英文摘要:
      The Karstedt’s catalyst was difficult to be dissolved because of the organic compounds containing carbon and silicon. By using sealed digestion technique in the mixture of hydrochloride acid - nitric acid - hydrofluoric acid at 150℃ for 7 hours, the sample was dissolved, and the carbon and silicon was removed. The concentration of platinum in the solution was detected by inductively coupled plasma atomic emission spectrometry (ICP-AES), and the results were not disturbed by the impurities. For Karstedt’s catalysts with platinum concentration range of 500~20000 μg/g, the relative standard deviation (RSD) was less than 2%, and the recovery was 96.3%~103.6%. The results of determination were in agreement with the nominal values, meeting the requirements for analysis in production.
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