| 同时测定人发中微量锌,铜的分光光度法 |
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| 引用本文： | 黄青瑜 吴敏. 同时测定人发中微量锌,铜的分光光度法[J]. 四川大学学报(自然科学版), 1989, 26(3): 330-335 |
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| 作者姓名： | 黄青瑜 吴敏 |
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| 作者单位： | 四川大学化学系(黄青瑜)，四川大学化学系(吴敏) |
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| 摘 要： | 研究了在PH8.5的氨—氯化铵缓冲介质和表面活性剂Triton x-100存在下,5—Br—PADAP显色剂分别与锌、铜形成红色络合物.在普通分光光度计上,双波长测定人发中的锌,单波长同时测定铜.
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| 关 键 词： | 毛发 锌 铜 分光光度法 |
SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF TRACE COPPER AND ZINC IN HAIR |
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| Huang Qingyu Wu Ming. SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF TRACE COPPER AND ZINC IN HAIR[J]. Journal of Sichuan University (Natural Science Edition), 1989, 26(3): 330-335 |
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| Authors: | Huang Qingyu Wu Ming |
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| Affiliation: | Department of Chemistry |
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| Abstract: | The red complexes of Zinc and copper with 2 (5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) formed in the presence of triton x-100 at PH=8.5. The method can be used for determining simultaneously trace zinc and trace copper by dual wavelength spectro-photometry. The. molar ratios of zinc and copper to 5-Br-PADAP are identical (1:2). The coefficients of variation are 1.5% and 2.4% (10 determinations) and the recoveries are 96.1-98.3% and 96.8-101.5% for zinc and copper, respectivety. The method has been successfully applied for determinalions of zinc and copper in hair. |
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| Keywords: | hair zinc copper 5-Br-PADAP dual wavelength spectrophotometry. |
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