SYNTHESIS OF 1-(4′-NITROPHENYL)-3-(3″-METHYLPYRIDYL)-TRIAZENE AND ITS COLOR REACTION WITH ZINC(Ⅱ) ION
摘 要
报道了显色剂1-(4-硝基苯)-3-(3-甲基吡啶)-三氮烯的合成及其与锌的显色反应研究.在Triton X-100存在下,pH 11.0的硼砂-氢氧化钠缓冲溶液中,该试剂能与锌发生显色反应,锌与显色剂形成摩尔比为1∶4的黄色配合物,在445 nm波长处有最大正吸收峰,在535 nm波长处有最大负吸收.以445 nm为参比波长,535 nm为测量波长进行双波长测定,表观摩尔吸光系数为1.88×105L·mol-1·cm-1,锌浓度在0~12 μg/25 mL范围内符合比耳定律.用拟定方法测定植物样品中微量锌,分析结果的相对标准偏差均小于2.5%,加标回收率在99.6%~100.4%之间.
Abstract
A new chromogenic reagent,1-(4′-nitrophenyl)-3-(3″-methylpyridyl)-triazene was synthesized and its structure was characterized by elementary analysis and IR-spectrometry.Its color reaction with zinc(Ⅱ) ion was also studied.In a borate buffer of pH 11.0 and in the presence of Triton X-100,a yellow colored coordination complex was formed between the new color reagent and Zn(Ⅱ) ion with a mole ratio (R∶Zn) of 4 to 1,and its positive absorption maxima and negative maxima were found at the wavelength 445 nm and 535 nm respectively.Dual-wavelength spectrophotometric measurements were made with 535 nm as measuring wavelength and 445 nm as reference wavelength.Beer′s law was held in the range of 0-12 μg of Zn(Ⅱ) per 25 mL of solution,with an apparent molar absorptivity of 1.88×105L·mol-1·cm-1.In its application to the analysis of 2 kinds of plant samples,values of RSD′s (n=6) obtained were less than 2.5%,and results of recovery test were in the range of 99.6%-100.4%.
中图分类号 O657.31
所属栏目 工作简报
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收稿日期 2005/6/7
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备注郑云法(1954-),男,浙江缙云人,教授,从事有机合成及分析测试研究.
引用该论文: ZHENG Yun-fa,ZHANG Chun-niu,ZHAN Yin-hua. SYNTHESIS OF 1-(4′-NITROPHENYL)-3-(3″-METHYLPYRIDYL)-TRIAZENE AND ITS COLOR REACTION WITH ZINC(Ⅱ) ION[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2006, 42(12): 988~990
郑云法,张春牛,詹银花. 1-(4-硝基苯)-3-(3-甲基吡啶)-三氮烯的合成及其与锌的显色反应[J]. 理化检验-化学分册, 2006, 42(12): 988~990
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参考文献
【1】郭启华,周勇义,邹洪,等.三氮烯类试剂在光度分析中的应用进展[J].冶金分析,2003,23(1):20-26.
【2】张春牛,杨明华,郑云法.1-(2-羟基-5-硝基苯基)-重氮氨基偶氮苯与汞的显色反应[J].化学研究与应用,2003,15(3):405-406.
【3】汪朝存,哈成勇.2-吡啶重氮氨基偶氮苯与镉(Ⅱ)的显色反应及其应用[J].分析化学,1998,26(10):1260-1263.
【4】龚楚儒,杨明华,金传明,等.1-偶氮苯基-3-(5-硝基-2-吡啶)-三氮烯的合成及其与镉的显色反应[J].化学研究与应用,2001,13(5):532-533.
【5】张春牛,郑云法,王智敏.6-硝基-2-苯并噻唑重氮氨基偶氮苯的合成及与镍的显色反应[J].冶金分析,2004,24(2):16-18.
【6】赵书林,夏心泉,肖弛.新试剂苯并噻唑重氮氨基偶氮苯与镉的显色反应研究及其应用[J].分析试验室,1998,17(5):14-16.
【2】张春牛,杨明华,郑云法.1-(2-羟基-5-硝基苯基)-重氮氨基偶氮苯与汞的显色反应[J].化学研究与应用,2003,15(3):405-406.
【3】汪朝存,哈成勇.2-吡啶重氮氨基偶氮苯与镉(Ⅱ)的显色反应及其应用[J].分析化学,1998,26(10):1260-1263.
【4】龚楚儒,杨明华,金传明,等.1-偶氮苯基-3-(5-硝基-2-吡啶)-三氮烯的合成及其与镉的显色反应[J].化学研究与应用,2001,13(5):532-533.
【5】张春牛,郑云法,王智敏.6-硝基-2-苯并噻唑重氮氨基偶氮苯的合成及与镍的显色反应[J].冶金分析,2004,24(2):16-18.
【6】赵书林,夏心泉,肖弛.新试剂苯并噻唑重氮氨基偶氮苯与镉的显色反应研究及其应用[J].分析试验室,1998,17(5):14-16.
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