E. Pobozy et al., FLOW-INJECTION SPECTROPHOTOMETRIC DETERMINATION OF FREE RESIDUAL CHLORINE IN WATERS WITH 3,3'-DIMETHYLNAPHTIDINE, Microchemical journal, 51(3), 1995, pp. 379-386
Application of 3,3-dimethylnaphtidine as chromogenic reagent in the fl
ow-injection system with spectrophotometric detection enables the dete
rmination of free residual chlorine with sufficient selectivity and de
tectability with sampling rate 150 samples per hour. The developed met
hod was satisfactorily applied to the analysis of treated water sample
s, although their limited selectivity to chloramines was also demonstr
ated. (C) 1995 Academic Press, Inc.