| 离子对配合物在纸上光度法中的应用——银菲罗啉和溴酚兰的沉淀反应研究 |
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| 引用本文： | 左本成,徐淑媛,杨宝平. 离子对配合物在纸上光度法中的应用——银菲罗啉和溴酚兰的沉淀反应研究[J]. 河北大学学报(自然科学版), 1989, 0(2) |
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| 作者姓名： | 左本成 徐淑媛 杨宝平 |
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| 作者单位： | 河北大学化学系(左本成，徐淑媛)，河北大学化学系(杨宝平) |
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| 摘 要： | 在中性条件下,银同1,10—菲罗啉络合,用溴酚兰形成离子对配合物沉淀,研究了缔合比和溶度积。离子对配合物沉淀易吸滤在滤纸上而且稳定,碱水可洗掉过量的试剂,采用双波长吸光度差值法在600nm及720nm处进行测定,对于ppm级的含银水,相对标准偏差为4％。
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| 关 键 词： | 银 1,10-菲罗啉 溴酚兰 光度法 |
The Applicaiou of Ion-association Cmplex to the paper Absorption Spectrophotometry-Study on the precipitation Reaction of 1 . 10-phenanthroline-Silver with Bromophenol Blue |
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| Zuo Bencheng Xu Shuyuan Yang Baopig. The Applicaiou of Ion-association Cmplex to the paper Absorption Spectrophotometry-Study on the precipitation Reaction of 1 . 10-phenanthroline-Silver with Bromophenol Blue[J]. Journal of Hebei University (Natural Science Edition), 1989, 0(2) |
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| Authors: | Zuo Bencheng Xu Shuyuan Yang Baopig |
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| Affiliation: | Department of Chemistry |
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| Abstract: | The ion-paired complex of silver and 1 . 10-phenanthroline reacts with the Bromophenol Blun at pH= 7 in water to produce ion-association complex. The precipitation of the complex collected on a piece of filter paper by a filtering pipette. The fleck is then measured by model 721 spectrophotometer at wavelenghs 600nm and 720nm. Ion-association complex is formed with a ratio of 1 .10-phe-nanthrol ine-silver to Bromophenol Blue 1 : 1 , and the ksp is 6.62×1013. The Precision of this method is 4 for silver at ppm levels in water. the precipitation on paper is stable. |
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| Keywords: | silver 1.10-phenanthrol ine Bromophenol Blue spectrophotometry. |
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