高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (12): 1671.

• 研究简报 • 上一篇    下一篇

meso-四(4-磺酸基苯基)卟啉与银(Ⅰ)高灵敏显色反应的研究与应用

潘祖亭, 赵晔, 金贞淑, 王明芝, 徐勉懿   

  1. 武汉大学化学系, 武汉 430072
  • 收稿日期:1992-12-17 修回日期:1993-03-04 出版日期:1993-12-24 发布日期:1993-12-24
  • 通讯作者: 潘祖亭, 男, 48岁, 副教授.
  • 作者简介:潘祖亭, 男, 48岁, 副教授.
  • 基金资助:

    国家自然科学基金

Spectrophotometric Study on the Color Reaction of Silver(Ⅰ) with meso-Tetra (4-sulphophenyl) porphyrin

PAN Zu-Ting, ZHAO Ye, JIN Zhen-Shu, WANG Ming-Zhi, XU Mian-Yi   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1992-12-17 Revised:1993-03-04 Online:1993-12-24 Published:1993-12-24

PDF (PC)

被引次数

14

关键词: 卟啉, 银, 分光光度法, 环糊精

Abstract: Ahighly sensitive spectrophotometric method has been developed for the determination of trace silver, based on the color reaction of silver(Ⅰ) with meso-tetra(4-sulphophenyl) porphyrin (TPPS4) in the presence of cetyltrimethylammonium bromide (CTMAB) and β-cy-clodextrin(β-CD).The silver(Ⅰ) complex formed is sensitive, stable, and remained unchanged in strong acid medium.The apparent molar absorptivity of the complex is 5.21 × 105 L/mol · cm at 424 nm.The composition ratio of the complex was determined to be 1:1:2(Ag:TPPS4:CTMAB) by both the continuous variation method and the molar ratio method.Beer's Law is obeyed for silver in the range of 0-8 μg/25 mL.The interference of foreign ions was also examined.The method can be used for the determination of silver in the fixer waste water, photographic paper and ores, and the results are the same as those of AAS.

Key words: Porphyrin, Silver, Spectrophotometry, Cyclodextrin

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