高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (3): 299.

• 研究简报 • 上一篇    下一篇

α,β,γ,δ-四苯基卟啉与钴显色反应的研究

吴其庄1, 王东进1, 苏德瑞1, 曾广泉1, 黄泽兴2, 何淑琼2   

  1. 1. 福州大学化学系;
    2. 华侨大学化学系
  • 收稿日期:1987-07-14 出版日期:1989-03-24 发布日期:1989-03-24
  • 通讯作者: 吴其庄

Studies on the Coloring Reaction of α,β,γ,δ-Tetraphenylporphine with Cobalt

Wu Qizuang1, Wang Dongjin1, Su Demi1, Zeng Guangquan1, Huang Zhexing2, He Suqiong2   

  1. 1. Department of Chemistry, Fuzhou University, Fuzhou;
    2. Department of Chemistry, Huachiao University, Quanzhou
  • Received:1987-07-14 Online:1989-03-24 Published:1989-03-24

摘要: 用卟啉类显色剂测定钴的研究还较少,而且已报道的均为水溶性卟啉。鉴于非水溶性卟啉合成及提纯容易、产率高、种类多等优点,本文在研究非水溶性α,β,γ,δ-四苯基卟啉(简称TPP)与Cu(Ⅱ)、Pd(Ⅱ)、Cd(Ⅱ)等配合反应的基础上又研究了该试剂与Co(Ⅱ)的反应。在阴离子表面活性剂十二烷基硫酸钠(SDS)存在下,利用咪唑加速催化Co(Ⅱ)对Cd-TPP配合物的置换反应,使Co(Ⅱ)与TPP形成了很稳定的配合物。ε435=3.02×105L·mol-1·cm-1。是目前卟啉类试剂测定钴较灵敏的方法,测定维生素B12中钴,结果满意。

关键词: 四苯基卟啉, 钴, 维生素B12

Abstract: The coloring reaction of TPP with Co (Ⅱ) was studied in the presence of anionic surfactant (SDS). It was shown that the highly sensitive and highly stable complex of TPPwith Co(Ⅱ) was formed through the exchange reaction between Co (Ⅱ) and Cd-TPP complex. The molar absorptivity ε435nmis 3.02×105L. mol-1.cm-1. The complex was estimated to be 1:1 by the continuous variation method. The interference of 27 kinds of ions was examined with the aid of a mixture of sodium thiosulphate, patassium sodium tatrate and sodium fluoride as a masking agent. The established method was applied to the determination of Co (Ⅱ) in the injection of vitamin B12with satisfactory results.

Key words: Tetraphenyl porphine, Cobalt, Vitamin B12

TrendMD: