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

作　　者：韩守礼 郭俊梅 谭文进 贺小塘 李琨 李勇 刘文 吴喜龙 王欢 赵雨 

机构地区：[1]贵研资源(易门)有限公司,贵研铂业股份有限公司稀贵金属综合利用新技术国家重点实验室,昆明650106

出　　处：《贵金属》2015年第1期53-57,共5页Precious Metals

基　　金：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)

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/T23220-2009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。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 spectrophotometry 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.

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 

分 类 号：O655.23[理学—分析化学]