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| 双波长等吸收法测定双氧水用废催化剂中钯的含量 |
| Determination of Palladium Content in Spent Catalyst for Hydrogen Peroxide Production by Dual-Wavelength Equivalent Absorbance Spectrophotometry |
| 投稿时间：2014-06-10 |
| DOI： |
| 中文关键词: 分析化学 双波长等吸收分光光度法 双氧水用废催化剂 钯 |
| 英文关键词: analytical chemistry dual-wavelength equivalent absorbance spectrophotometry hydrogen peroxide spent catalysts palladium |
| 基金项目:国家高技术研究发展计划基金(863计划)(2012AA063203，2012AA063207)、云南省科技创新强省计划项目(2011AA004)、中国有色金属行业标准制(修)订基金项目(2013-1624T-YS)。 |
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| 中文摘要: |
| 建立了双波长等吸收法测定双氧水用废催化剂中钯含量的方法，优化了测定条件，与GB/T 23220-2009分析方法进行了对照。结果表明，在选定的条件下，双波长法等吸收法较单波长法测定钯的选择性好；测定样品中251.6~5563.9 g/t的钯，相对标准偏差(RSD，n=22)为0.387%~ 0.795%，允许差(3S)为6~78 g/t，相对允许差为1.2%~2.3%；样品加标准回收率99.35%~100.55%。测定结果与GB/T 23220-2009分析方法的结果吻合。 |
| 英文摘要: |
| A method for determination of palladium content in spent catalysts for hydrogen peroxide production by dual-wavelength equivalent absorbance spectrophotometry was established. Conditions for determination of palladium were systemic investigated and optimized. Effect of errors coming from coexisting ions on determination of palladium by dual-wavelength equivalent absorbance spectrophoto- metry and odd-wavelength spectrophotometry was compared, and results determined by the proposed method were comparied with GB/T 23220-2009. Results indicated that the selectivity of dual-wavelength equivalent absorbance spectro-photometry is better than that of odd-wavelength spectrophotometry under chosen conditions. Palladium contents of 251.6~5563.9 g/t in hydrogen peroxide using spent catalysts were measured, and the relative standard deviation (RSD, n=22) was 0.387%~0.795%, permission deviation (3S) was 6~78 g/t, and relative permission deviation was 1.2%~2.3%, respectively. Recoveries of standard addition were 99.35%~ 100.55%. Analytical results of the proposed method were in reasonable agreement with those of GB/T 23220-2009. |
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