New test tools: Benzidine on cellulose and silica gel

V.M. Ostrovskaya, Yu.A. Zolotov, E.I. Morosanova, D.Yu. Marchenko

Fresenius J Anal. Chem., v. 361. p. 300-303 (1998)

ABSTRACT. Chromogenic reagents based on covalent and non-covalent im- mobilization of benzidine on cellulose and silica gels have been deve- loped and investigated. New test tools (paper strips, indicator tubes, and indicator powders) and test methods have been elaborated for the determination of chlorine in the concentration range of 0,05-120 mg/L.

Laboratory of Preconcentration