高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (4): 555.

• 研究简报 • 上一篇    下一篇

合成的近红外花菁染料测定痕量血清蛋白质

郑洪, 李东辉, 吴敏, 许金钩, 陈秋影   

  1. 厦门大学化学系, 教育部材料与生命过程分析科学开放研究实验室, 厦门 361005
  • 收稿日期:1998-08-18 出版日期:1999-04-24 发布日期:1999-04-24
  • 通讯作者: 许金钩
  • 作者简介:郑洪,男,31岁,博士研究生.
  • 基金资助:

    国家自然科学基金(批准号:29775021);教育部材料与生命过程分析科学开放实验室资助

Studies on the Application of Synthesized Near-IR Cyanine to the Determination of Trace Amounts of Protein

ZHENG Hong, LI Dong-Hui, WU Min, XU Jin-Gou, CHEN Qiu-Ying   

  1. Department of Chemistry, The Research Laboratory of SEDC of Analytical Science for Material and Life Chemistry, Xiamen University, Xiamen, 361005
  • Received:1998-08-18 Online:1999-04-24 Published:1999-04-24

摘要: 染料结合法测定蛋白质在生化及临床分析中已有广泛应用,常用的染料有溴甲酚绿、溴酚蓝、考马斯亮蓝及铬天青S等,这些染料的最大吸收波长均处于可见光区.近年来,近红外染料越来越引起人们的注意.

关键词: 近红外染料, 花菁, 血清蛋白质, 分光光度法

Abstract: Anew watersoluble near-IRcyanine dye was synthesized and its structure was characterized by 1HNMR, MS and IR spectra. The dye was used as a probe to establish a novel near-IR spectrophotometric method for the determination of trace amount of serum protein. The dye has a maximum absorption wavelength at 776nm, its absorbance decreases when it reacts with protein(for example, BSA). The reaction of the dye with BSA was carried out in 0.02mol/L HAc-NaAc buffer system(pH4.0). When 3.0×10-6mol/Lcyanine was used, the linearity of this method was over the range of 1.00×102-1.90×103ng/mL by determination of HSA and globulin, and the detection limit was 50ng/mL.

Key words: Near-IR dye, Cyanine, Serum protein, Spectrophotometry

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