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  试样采用HNO3-HClO4湿法消解、或在700℃下灼烧除去碳,王水溶解残渣后用ICP-AES测定钯含量。考察了样品前处理、方法精密度和准确度,样品加标回收率为99%~101%,相对标准偏差<1%。方法准确、快速、简便。

The content of Pd was determined through (1) wet digestion with HNO3-HClO4 or ignition at 700℃ to remove carbon, (2) dissolution of the residues by aqua regia and (3) determination of palladium by ICP-AES. Pretreatment of sample, accuracy and precision of the method were discussed. The additional standard recovery is 99%~101%, RSD <1%. The method is simple, accurate and fast.

参考文献

[1] GB/T 23518-2009.钯炭[S].北京:中国标准出版社,2009.
[2] GB/T 15072.4-2008.贵金属及其合金化学分析方法钯、银合金中钯量的测定二甲基乙二醛肟重量法[S].北京:中国标准出版社,2008.
[3] GB/T 23276-2009.钯化合物分析方法钯量的测定二甲基乙二醛肟析出EDTA络合滴定法[S].北京:中国标准出版社,2009.
[4] 朱利亚,赵忆宁,金娅秋,段颖,安中庆.金、银、铂、钯合金中钯的选择性滴定方法的研究与应用[J].贵金属,2007(02):40-44,69.
[5] GB/T 23277-2009.贵金属催化剂化学分析方法汽车尾气净化催化剂中铂、钯、铑量的测定分光光度法[S].北京:中国标准出版社,2009.
[6] 李振亚,马媛,洪英,赵莎.汽车尾气净化催化剂中Pt、Pd、Rh含量的测定[J].贵金属,2001(02):28-31,35.
[7] Kovalev I.A. .FIA-FAAS system including on-line solid phase extraction for the determination of palladium, platinum and rhodium in alloys and ores[J].Talanta: The International Journal of Pure and Applied Analytical Chemistry,2000(1):39-50.
[8] Merdivan M;Aygun RS;Kulcu N;BALIKESIR UNIV DEPT CHEM BALIKESIR TURKEY.;MERSIN UNIV DEPT CHEM MERSIN TURKEY. .Flame AAS determination of platinum, palladium, and rhodium in catalysts[J].Atomic Spectroscopy,1997(4):122-126.
[9] 朱良.碳钯催化剂中钯含量分析方法改进[J].山西化工,2010(02):47-49,64.
[10] 赵礼民,张岩,张玉峰,周英,陈宏.等离子发射光谱法测定废钯催化剂中钯含量[J].化学工程与装备,2010(02):138-139.
[11] 刘东艳,张园力.等离子发射光谱法测定催化剂中的钯[J].石油化工,2001(02):138-140.
[12] 肖建梅.电感耦合等离子体发射光谱法测定钯碳催化剂中钯含量[J].中国科技博览,2009(15):287-287.
[13] 臧慕文.ICP-AES法测定钯碳催化剂中钯的不确定度的评定[J].分析试验室,2003(06):13-17.
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