论文信息 - Comparison of free and total chlorine measurement methods in municipal wastewaters

Comparison of free and total chlorine measurement methods in municipal wastewaters

Accurate and precise determination of chlorine residuals is essential for the assessment of disinfection efficiency. In this study, various methods for the analysis of free available chlorine (FAC) and total residual chlorine (TRC) were compared in chlorinated municipal wastewaters. Rates of interferences in the measurements also were determined. The amperometric titration and iodometric II methods were the most reproducible and the iodometric I and potentiometric electrode methods were the least reproducible for the measurement of TRC. The rate of interference in the measurement of FAC by the N,N-diethyl-p-phenylenediamine method was similar to the rate of interference from inorganic monochloramine

[1] Richard D. Thomas. Drinking Water and Health , 1986 .

[2] T. H. Feng. Behavior of organic chloramines in disinfection. , 1966 .

[3] R. A. Day,et al. Atom-transfer redox kinetics: general-acid-assisted oxidation of iodide by chloramines and hypochlorite , 1986 .

[4] J. Donald Johnson,et al. Specificity of the DPD and Amperometric Titration Methods for Free Available Chlorine: A Review , 1989 .

[5] J. Johnson,et al. Quantitation of interferences under equilibrium conditions with application to free chlorine analysis in the presence of organic chloramines , 1989 .

[6] George Clifford White,et al. Handbook of chlorination , 1986 .

[7] J. Fiquet. Dosage du chlore libre à la N-N diéthyl-p-phénylènediamine (DPD): interférence de la monochloramine , 1985 .

[8] B. Olson,et al. Interference in the bactericidal properties of inorganic chloramines by organic nitrogen compounds. , 1985, Environmental science & technology.