| 分光光度法测定钯的新显色剂 2-四唑偶氮-5-二乙氨基酚 |
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| 引用本文： | 梁华定,葛昌华,潘富友.分光光度法测定钯的新显色剂 2-四唑偶氮-5-二乙氨基酚[J].分析测试学报,2001,20(2):69-71. |
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| 作者姓名： | 梁华定 葛昌华 潘富友 |
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| 作者单位： | 台州师范专科学校化学系, |
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| 基金项目： | 浙江省教委计划课题!(19990365) |
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| 摘 要： | 研究了新显色剂2_四唑偶氮_5_二乙氨基酚 (TTZAPN)分光光度法测定Pd2 的条件。在 pH5.0的HAc -NaAc介质中 ,该试剂与Pd2 形成稳定的摩尔比为2∶1的紫红色络合物。其最大吸收波长在530nm处 ,表观摩尔吸光系数为4.51×104L·mol -1·cm -1 ,Pd2 质量浓度在0～1.0mg/L范围内遵守比尔定律。所拟方法直接测定钯 -碳催化剂和分子筛中微量钯 ,结果令人满意。
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| 关 键 词： | 2-四唑偶氮-5-二乙氨基酚 分光光度法 钯 |
| 文章编号： | 1004-4957(2001)02-0069-03 |
| 修稿时间： | 2000年5月19日 |
Determination of Palladium by Spectrophotometry with 2 _ Tetrazolylazo _ 5 _ diethylamino Phenol |
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| LIANG Hua-ding,GE Chang-hua,PAN Fu-you.Determination of Palladium by Spectrophotometry with 2 _ Tetrazolylazo _ 5 _ diethylamino Phenol[J].Journal of Instrumental Analysis,2001,20(2):69-71. |
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| Authors: | LIANG Hua-ding GE Chang-hua PAN Fu-you |
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| Abstract: | The conditions of colour reaction of a new reagent 2 _ tetrazolylazo _ 5 _ diethylamino phenol（ TTZAPN） with Pd2＋ are presented.The results show that the new colour reagent reacts with palladium to form a stable purple red complex(1∶ 2 by mole) in the medium of HAc－ NaAc with pH 5.0.The apparent molar absorptivity is 4.51× 104 L· mol－ 1· cm－ 1 and maximum absorption wavelength is at 530 nm.Beer's law is obeyed in the range of 0～ 1.0 mg/L for Pd2＋ .The method has been used for the direct determination of palladium in Pd _ containing catalyst and molecular sieve with satisfactory results. |
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| Keywords: | 2-Tetrazolylazo _ 5 _ diethylamino phenol Spectrophotometry Palladium |
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