9-(3,5-二溴)水杨基荧光酮-Sn-OTMAB-OP显色体系的研究及应用

Study of Chromogenic Reaction System of DBSF-Sn-OTMAB-OP and Its Application

本文研究了9－（3．5－二溴）水杨基荧光酮与锡的显色体系。在OTMAB及OP存在下，锡与显色剂在硫酸介质中形成橙黄色配合物，最大吸收波长522nm，摩尔吸光系数1．12×105，锡含量0～15μg／25ml符合比耳定律。该显色反应选择性好，稳定时间长，用于工业废水及合金中锡的测定，可获满意结果。

It is reported in this paper that in the presence of OTAB and OP, Tin(Sn) forms a orange complex with 9- (3,5-dibromo) salicyfluorone (DBSF) in sulphuric acid solution.The complex exhibits maximum absorption at 522nm and molar absorptivity of 1. 12×105Lmol-1 cm-1. Beer's law is obeyed in the concentration range of 0～15μg/25ml for Tin. The proposed system proves to be selective and stable, and has been applied to the test of industrial waste water and The in alloys with a satisfactory results.