| 铜(Ⅱ)-1,10-菲咯啉—赤藓红水相荧光反应——荧光猝灭法测定痕量铜 |
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| 引用本文： | 刘绍璞,余炳生. 铜(Ⅱ)-1,10-菲咯啉—赤藓红水相荧光反应——荧光猝灭法测定痕量铜[J]. 西南师范大学学报(自然科学版), 1992, 0(2) |
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| 作者姓名： | 刘绍璞 余炳生 |
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| 作者单位： | 西南师范大学化学系 重庆630715(刘绍璞)，贵阳医学院卫生系 贵阳550004(余炳生) |
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| 摘 要： | 研究了在TritonX-100存在的水溶液中铜(Ⅱ)-1,10-菲咯啉-赤藓红体系的荧光猝灭反应.铜与1,10-菲咯啉(Phen)和赤藓红(TIF)反应形成组成为[Cu(Phen)_2](TIF)的离子缔合络合物并引起赤藓红的荧光猝灭,此反应具有高的灵敏度,其检测限为3.6μg·L~(-1)铜.研究了反应的适宜条件和其它离子的影响.在用二苯硫腙-CCI_4分离和预富集后,方法可用于水和土壤样品中痕量铜的测定.
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| 关 键 词： | 痕量铜的的测定 荧光猝灭 赤藓红 1 10-菲咯啉 Triton X-100 |
REACTION OF THE FLUORESCENCE QUENCHING OF COPPER(II)-1,10- PHENANTHROLINE- ERYTHROSINE SYSTEM IN THE AQUEOUS SOLUTION-----THE DETERMINATION OF TRACE AMOUNTS OF COPPER BY THE FLUORESCENCE QUENCHING METHOD |
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| Liu Shaopu. REACTION OF THE FLUORESCENCE QUENCHING OF COPPER(II)-1,10- PHENANTHROLINE- ERYTHROSINE SYSTEM IN THE AQUEOUS SOLUTION-----THE DETERMINATION OF TRACE AMOUNTS OF COPPER BY THE FLUORESCENCE QUENCHING METHOD[J]. Journal of southwest china normal university(natural science edition), 1992, 0(2) |
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| Authors: | Liu Shaopu |
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| Abstract: | The reaction of the fluorescence quenching of copper(II)-l, 10-phenanthroline-erythrosine system in aqueous solution in the presence of TritonX-100 was studied,Copper( I )reacts with l,10-phenanthrolihe(Phen)and erythrosine(TIF) to form a ion-association complex of composition [Cu(Phen)2](TIF) and set off the quenching of fluorescence of erythrosine. The reaction has high sensitivity and its detection limit is 3'.6ugL-1 of Cu(II).The optimum cordit ons of the reaction and the effects of other ions were investigated. The value of fluorescence quenching has good line relationship with concentration of copper ( II )in the range 0-1.0 ng of copper per 25 ml. After separation and preconcentr-ation with extraction of dithizone-CC14, the method can be applied to determination of trace amounts of copper in water and soil samples. |
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| Keywords: | copper determination fluorescence quenching method erythrosine l 10-phenanthroline Triton X-100 |
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