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| 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 |
| Received:November 06, 2017 |
| 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 铂 |
| 英文关键词: analytical chemiatry sealed digestion ICP-AES Karstedt's catalyst platinum |
| 基金项目: |
| Author Name | Affiliation | E-mail | | MA Yuan | Sino-Platinum Metals Co. Ltd., Sino-Platinum Metals Testing Technology Yunnan Co. Ltd., Kunming 650106, China | mayuan@ipm.com.cn | | YANG Xiaotao | Sino-Platinum Metals Co. Ltd., Sino-Platinum Metals Testing Technology Yunnan Co. Ltd., Kunming 650106, China | | | YU Yao | Sino-Platinum Metals Co. Ltd., Sino-Platinum Metals Testing Technology Yunnan Co. Ltd., Kunming 650106, China | | | HAN Yanbo | Sino-Platinum Metals Co. Ltd., Sino-Platinum Metals Testing Technology Yunnan Co. Ltd., Kunming 650106, China | | | FANG Wei | Sino-Platinum Metals Co. Ltd., Sino-Platinum Metals Testing Technology Yunnan Co. Ltd., Kunming 650106, China | | | LI Kaizhong | Sino-Platinum Metals Co. Ltd., Sino-Platinum Metals Testing Technology Yunnan Co. Ltd., Kunming 650106, China | 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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