INTRODUCTION  The method is designed to measure mass concentration of zinc in samples of natural, drinking and waste  water by fluorometric method using the FLUORAT® -02 analyzer.

 MEASUREMENT METHOD  Fluorescence method of measuring zinc mass concentration is based  on determination of a coordination compound of zinc ions with 8- mercapto-quinoline in the acetate buffer medium (pH 4.6–4.9). The  coordination compound is extracted by chloroform, and the change in  the fluorescence intensity of the extract using the FLUORAT® -02  analyzer. The 8,8'-diquinolyl disulfide is used to eliminate the  interfering influence of copper, and 1,10-phenanthroline is used to  eliminate the interference of iron.