| 1-(2-噻唑)-3-(8-(5-对磺酸基苯基偶氮)喹啉)-三氮烯的合成及其与铜(Ⅱ)的显色反应 |
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| 引用本文： | 龙巍然,洪涛,李丽萍,周浩,曹秋娥.1-(2-噻唑)-3-(8-(5-对磺酸基苯基偶氮)喹啉)-三氮烯的合成及其与铜(Ⅱ)的显色反应[J].分析试验室,2012,31(1):95-97. |
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| 作者姓名： | 龙巍然 洪涛 李丽萍 周浩 曹秋娥 |
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| 作者单位： | 1. 兴义民族师范学院化生系,兴义,562400
2. 云南大学化学科学与工程学院,昆明,650091 |
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| 摘 要： | 合成了新试剂1-(2-噻唑)-3-(8-(5-对磺酸基苯基偶氮)喹啉-三氮烯(TCPQT),并研究了其与Cu2+的显色反应。结果表明:在pH 7.5的磷酸盐缓冲溶液中,TCPQT与Cu2+形成摩尔比为1:1的紫红色络合物,该络合物在606.5nm处有一最大吸收峰,其表观摩尔吸光系数为3.36×105L.mol-1.cm-1,Cu2+的质量浓度在0～0.4μg/mL范围内符合比尔定律,相关系数r=0.9993。方法已用于测定食品中的微量铜。
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| 关 键 词： | 1-(2-噻唑)-3-(8-(5-对磺酸基苯基偶氮)喹啉)-三氮烯 光度法 铜(Ⅱ) |
Synthesis of 1-( 2-thiazole )-3-( 8-( 5-p-sulfophenylazo ) quinoline )-triazene and its color reaction with copper( Ⅱ ) |
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| LONG Wei-ran
,
HONG Tao
,
LI Li-ping
,
ZHOU Hao
,
CAO Qiu-e.Synthesis of 1-( 2-thiazole )-3-( 8-( 5-p-sulfophenylazo ) quinoline )-triazene and its color reaction with copper( Ⅱ )[J].Chinese Journal of Analysis Laboratory,2012,31(1):95-97. |
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| Authors: | LONG Wei-ran HONG Tao LI Li-ping ZHOU Hao CAO Qiu-e |
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| Institution: | 1.Department of Chemisty and Biology,Xingyi Normal University for Nationalities,Xingyi 562400;2.School of Chemical Science and Technology,Yunnan University,Kunming 650091) |
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| Abstract: | A new reagent 1-(2-thiazole)-3-(8-(5-p-sulfophenylazo)quinoline-triazene(TCPQT) was synthesized.And the color reaction of this reagent with Cu2+ was studied.The results showed that TCPQT could react with Cu2+ to form a stable complex with a molar ratio of 1:1 and the maximum absorption wavelength of 606.5nm in phosphate buffer solution(pH 7.5).The Beer’s law was obeyed in the concentration range of 0～0.4 μg/mL for Cu2+ with the correlation coefficient of 0.9993 and the apparent molar absorptivity of 3.36×105 L·mol-1·cm-1.The proposed method was satisfactorily applied to the determination of trace copper in the food samples. |
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| Keywords: | 1-(2-thiazole)-3-(8-(5-p-sulfophenylazo)quinoline)-triazene(TCPQT) Spectrophotometry Copper(Ⅱ) |
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