| 硫氰酸铵树脂相分光光度法同时测定天然水中微量铁和钴 |
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| 引用本文： | 嗄日迪,刘颖.硫氰酸铵树脂相分光光度法同时测定天然水中微量铁和钴[J].光谱学与光谱分析,1997,17(5):121-123. |
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| 作者姓名： | 嗄日迪 刘颖 |
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| 作者单位： | 内蒙古师范大学化学系 |
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| 摘 要： | 研究了在Ｔｗｅｅｎ－８０存在的酸性介质中，Ｆｅ（Ⅲ）和Ｃｏ（Ⅱ）与ＳＣＮ＾－形成稳定的有色络阴离子与阴树脂交换吸附，有色络合物富集显色于树脂组上，进行树脂组分光光度集显色于树脂相上，进行树脂相分光光度法同时测定铁和钴的实验条件，Ｆｅ（Ⅲ）和Ｃｏ（Ⅱ）树脂具有色络合物最大吸收波长λｍａｘ分别为４９０ｎｍ和６３０ｎｍ，摩尔吸光系数，ε为２．４×１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１和２．１×１０＾５Ｌ．
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| 关 键 词： | 树脂相 分光光度法 铁 钴 天然水 硫氰酸铵树脂 |
DETERMINATION OF TRACE IRON AND COBALT IN NATORAL WATER BY AMMONIUM THIOCYANATE RESIN PHASE SPECTROPHOTOMETRY |
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| R Ga,Y Liu,G Li,S Bao,Q Hasi.DETERMINATION OF TRACE IRON AND COBALT IN NATORAL WATER BY AMMONIUM THIOCYANATE RESIN PHASE SPECTROPHOTOMETRY[J].Spectroscopy and Spectral Analysis,1997,17(5):121-123. |
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| Authors: | R Ga Y Liu G Li S Bao Q Hasi |
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| Institution: | Department of Chemistry, Inner Mongolia Normal University, 010022 Hohhot. |
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| Abstract: | At the presence of Tween-80 in acid medium, Fe(III) Co(III) and SCN- are changed into coloured complexations and quantitatively absorbed on the resin. The apparent molar absorptivities of resin phase are epsilon Fe = 2.4 x 10(5)L x mol(-1) x cm(-1) at 490nm and epsilon Co = 2.1 x 10(5)L x mol(-1) x cm(-1) at 630nm by spectrophotometry. Beer's law is obeyed by Fe(III) and Co (III) in the range of 0-8microg/25mL and 0-15microg/25mL. method has been applied to natural water. Relative standard deviations are 1.7% and 5.5%, respectively. |
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| Keywords: | Resin phase Spectrophotometry Iron Cobalt |
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