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| 氧弹燃烧-离子色谱法测定卡斯特铂中氯离子 |
| Determination of chloride ion in Karstedt catalyst by using oxygen bomb combustion-ion chromatography |
| Received:July 24, 2024 |
| DOI： |
| 中文关键词: 分析化学 卡斯特铂 氧弹燃烧 离子色谱 氯离子 |
| 英文关键词: analytical chemistry Karstedt platinum oxygen bomb combustion ion chromatography chloride ion |
| 基金项目:云南贵金属实验室科技计划项目(YPML-20240502084)；云南贵金属实验室科技计划项目(YPML-20240502100)；国家自然科学基金地方科学基金项目(No. 22462014) |
| Author Name | Affiliation | | SU Linlin | Sino-Platinum Metals Chemical Materials Yunnan Co.Ltd., Kunming 650503, China | | WU Bingxin | School of Life Sciences, Yunnan University, Kunming 650500, China | | ZHANG Si | Sino-Platinum Metals Chemical Materials Yunnan Co.Ltd., Kunming 650503, China | | HAN Yuan | Sino-Platinum Metals Chemical Materials Yunnan Co.Ltd., Kunming 650503, China | | FENG Yangyang | Sino-Platinum Metals Chemical Materials Yunnan Co.Ltd., Kunming 650503, China | | YU Yao | Sino-Platinum Metals Chemical Materials Yunnan Co.Ltd., Kunming 650503, China | | LEI Huaidong | Sino-Platinum Metals Chemical Materials Yunnan Co.Ltd., Kunming 650503, China | | HOU Wenming | Sino-Platinum Metals Chemical Materials Yunnan Co.Ltd., Kunming 650503, China |
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| 中文摘要: |
| 卡斯特铂催化剂中氯离子浓度是产品质量控制的重要因素。本文建立了氧弹燃烧-离子色谱法测定卡斯特铂中氯离子的分析方法，采用氧弹燃烧可以将氯离子从样品中解离，进一步用离子色谱法测定吸收液中的氯离子浓度。研究了助燃剂、样品量、KOH吸收液浓度对氯离子解离吸收的影响，用优化的梯度洗脱方法，对氯离子离子色谱测定条件进行了系统考察。结果表明，在优化条件下，离子色谱法在氯离子浓度0.05~1.0 μg/mL范围内具有良好的线性，加标回收率88.6%~103.5%，相对标准偏差(RSD)2.1%~7.2%，方法方法检出限(LOD)和定量限(LOQ)分别为0.013和0.043 μg/mL，可满足卡斯特铂中氯离子测定的要求。 |
| 英文摘要: |
| The concentration of chloride ions in Karstedt catalyst is an important factor for quality control of the products. In this paper, a method for the determination of chloride ions in the catalyst by using oxygen bomb combustion-ion chromatography was established. After chloride ions were dissociated from the sample via the oxygen bomb combustion and absorbed by KOH solution, they were measured with the ion chromatography. Effects of the combustion improver and amount of the sample and KOH concentration on the dissociation and absorption of chloride ions were investigated. Using an optimized gradient elution method, the ion chromatographic conditions were systematically investigated. The results showed that under optimized conditions, ion chromatography exhibited good linearity in a chloride ion concentration range of 0.05~1.0 μg/mL, with a spike recovery of 88.6%~103.5% and relative standard deviation (RSD) of 2.1%~7.2%. The limit of detection (LOD) and quantification (LOQ) of the method were found to be 0.013 and 0.043 μg/mL, respectively, satisfying the requirements for determining chloride ions in Karstedt catalyst. |
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