| 钌(Ⅱ)-Ⅲ(1,10-菲咯啉)-KMnO_4化学发光体系测定硫脲 |
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| 引用本文： | 孟辉,刘波,杜春霖.钌(Ⅱ)-Ⅲ(1,10-菲咯啉)-KMnO_4化学发光体系测定硫脲[J].辽东学院学报(自然科学版),2005(4). |
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| 作者姓名： | 孟辉 刘波 杜春霖 |
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| 作者单位： | 辽东学院装备与材料学院化工系，辽东学院装备与材料学院化工系，辽东学院装备与材料学院化工系 辽宁 丹东 118003，辽宁 丹东 118003，辽宁 丹东 118003 |
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| 摘 要： | 分别考察了钌(Ⅱ)-Ⅲ(1,10-菲咯啉)和硫脲在KMnO4、KBrO3、K2S2O8、I2、KIO4、 Ce(SO4)2存在下的化学发光反应情况,发现只有KMnO4能氧化硫脲和钌(Ⅱ)-Ⅲ(1,10-菲咯啉) 而发光。体系的化学发光强度与硫脲的浓度在2．0×10~(-8)～1．0×10~(-5)mol·L~(-1)范围内呈线性关系,方法的检出限为2．0×10~(-8)mol·L~(-1),平行测定10次相对标准偏差为1．1％。该法用于分析测定白葡萄酒中的硫脲,平均回收率为96．3％～103％获得满意结果。
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| 关 键 词： | 化学发光 硫脲 钌(Ⅱ)-Ⅲ(1 10-菲咯啉) |
The chemiluminscence determination of Thiourea using Tris(1,10-Phenanthroline)ruthenium(Ⅱ)-KMnO_4 system |
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| MENG Hui,LIU Bo,DU Chun-lin.The chemiluminscence determination of Thiourea using Tris(1,10-Phenanthroline)ruthenium(Ⅱ)-KMnO_4 system[J].Journal of Liaodong University：Natural Sciences,2005(4). |
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| Authors: | MENG Hui LIU Bo DU Chun-lin |
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| Affiliation: | MENG Hui,LIU Bo,DU Chun-lin Department of Chemical Engineering,College of Equipment and Material,Liaodong University,Dandong 118003,China |
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| Abstract: | The chemiluminscence of tris-(1,10-phenanthroline) ruthenium (Ⅱ)-thiourea system in the presence of oxi-danes such as KMnO4, KBrO3, K2S2O8, I2, KIO4, Ce (SO4)2 is studied. It is found that only KMnO4 can be helpful. The linear range is 2.0×108 -1.0×10-5mol· L~(-1) for thiourea density and the detection limit is 2.0×10-8 ~1.0×10-5mol· L~(-1) with the relative standard deviation of 1. 1% (n=10). The method is applied to analyze and measure the quantity of thiourea in the white grape wine, and a satisfactory result is gotten with the average recovery rate of 96.5%-103.0%. |
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| Keywords: | chemiluminescence Thiourea Ru (phen)32+ |
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