| 在线化学蒸气发生-电感耦合等离子体原子发射光谱法测定废催化剂中的微量铑 |
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| 引用本文： | 段旭川.在线化学蒸气发生-电感耦合等离子体原子发射光谱法测定废催化剂中的微量铑[J].分析化学,2010,38(3). |
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| 作者姓名： | 段旭川 |
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| 作者单位： | 天津师范大学化学与生命学院,天津市细胞遗传与分子调控重点实验室,天津,300387 |
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| 摘 要： | 使用电感耦合等离子原子发射光谱(ICP-AES)研究了贵金属铑和NaBH4在酸性水溶液中的化学蒸气发生反应的条件,并测定了有机合成催化剂中的铑。研究结果表明:在NaBH4和样品溶液流速为2mL/min、废液排放流速为6mL/min的条件下的最佳蒸气发生条件为:载气流速0.4L/min、HNO3浓度为1.0mol/L、NaBH4浓度为1.2%(m/V)。研究中获得的铑化学蒸气进样效率是常规的气动雾化进样效率的2.7倍;检出限是6.9μg/L,略优于气动雾化法;线性范围20～1500μg/L;线性相关系数是0.9986;RSD是1.6%。样品分析加标回收率分别是94%和97%。用本法测得的样品值与原子吸收法的测得值吻合很好。
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| 关 键 词： | 化学蒸气发生 电感耦合等离子体原子发射光谱 铑 |
Determination of Rhodium by Inductively Coupled Plasma Atomic Emission Spectrometry With Chemical Vapour Generation Sample Introduction Technique |
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| DUAN Xu-Chuan.Determination of Rhodium by Inductively Coupled Plasma Atomic Emission Spectrometry With Chemical Vapour Generation Sample Introduction Technique[J].Chinese Journal of Analytical Chemistry,2010,38(3). |
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| Authors: | DUAN Xu-Chuan |
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| Institution: | College of Chemistry and Life Sciences;Tianjin Normal University;Tianjin Key Laboratory of Cyto-Genetical and Molecular Regulation;Tianjin 300387 |
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| Abstract: | An inductively coupled plasma atomic emission spectrometry( ICP-AES) combined with a boron hydride vapour generation device was used for the determination of rhodium in waste catalyst. When the flow rate of sample and sodium borohydride solution was 2 mL/min,waste rate was 6 mL/min,the optimum conditions were as follows: 0. 4 L/min of carrier rate,1. 0 mol/L of acidity of nitric acid for vapor generation and concentration of sodium borohydride 1. 2( m/V) . The study showed that a two-fold increase in the ef... |
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| Keywords: | Chemical vapour generation Inductively coupled plasma atomic emission spectrometry Rhodium |
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