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化学学报
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化学学报 ›› 1958, Vol. 24 ›› Issue (1): 79-86. 上一篇    下一篇

论文

隣苯二酚-铁(Ⅲ)络合物及其用于氟的测定

梁树權1, 陈永兆2   

  1. 1. 中国科学院化学研究所;
    2. 广州中山大学化学系
  • 投稿日期:1957-08-17 发布日期:2013-06-03

ON THE PYROCATECHOL-FERRIC COMPLEXES AND THEIR APPLICATION IN FLUORIDE DETERMINATION

LIANG SHU-CHUAN1, CHEN YUNG-CHAO2   

  1. 1. Institute of Chemistry, Academia Sinica;
    2. Chemistry Department, Sun Yat-Sen University
  • Received:1957-08-17 Published:2013-06-03

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765

被引次数

2

本文报告铁与隣苯二酚溶液在pH2—12范围内的光吸收曲线(400—800mμ)和用连续变更浓度法在各pH的溶液寻找生成的络合物.除前人已报告的三种络离子(绿色, 铁:隣苯二酚=1:1;紫色, 1:2;红色, 1:3;但该各络合物生成的pH范围与前人略有参差)外, 又找出两种新络离子.一为绿黄色阳离子, 铁与隣苯二酚之比为2:1, 另一为蓝色阴离子, 组成比为1:3;虽组成比与已知的红色阴离子相同, 但两者可能在电荷数目、离子大小和(或)配位体的数目及种类上不同.在pH4.2—10的溶液中氟不能褪去隣苯二酚铁络离子的颜色, 而在较酸的溶液中能褪色.以颜色的稳定度和可测度而论都不及已有的试剂.

This paper reports the light absorption(between 400-800 m, u) of py rocatechol-ferric iron solutions in the range of pH 2-12, and the complexes found by means of Job's continuous variation method with "pectrophotometer(Unicam, S.P.500).It is found that there are five completes in the solutions studied, among whit0h two(Ⅰ, Ⅲ) have not yet been reported previously.