Chemiluminescence system of Ce(IV)-RhB-bismerthiazol

Abstract

A novel chemiluminescence system for the determination of bismerthiazol is first described in this paper. It is based on the chemiluminescence reaction of bismerthiazol and Ce(IV) in nitric acid solution. The emission intensity could be enhanced greatly by Rhodamine B. The chemiluminescence intensity was proportional to bismerthiazol concentration over the range 30–1000 ?g/L. The detection limit was 12 ?g/L (3?) and the relative standard deviation is 2.4% for 500 ?g/L of bismerthiazol (n = 11). The proposed method was successfully applied to the determination of bismerthiazol in water and in rice. The recovery was 96.4%–104.1%.

Keywords

bismerthiazol / flow injection analysis / rhodamin B / chemiluminescence