Use of tetramethylbenzidine for the spectrophotometric sequential injection determination of free chlorine in waters.


A sequential injection (SI) method was developed for the spectrophotometric determination of chlorine based on the reaction between tetramethylbenzidine (TMB) and free chlorine. The advantages resulting from the use of TMB are considerable: TMB is highly selective for chlorine, it enables a fairly low quantification limit and represents a less toxic… (More)
DOI: 10.1016/j.talanta.2007.01.010


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