Abstract:A multicommuted method for determination of chlorine in water samples using a 100-cm cell was developed. In this method, orto-Tolidine reacts with chlorine and the product was monitored at 438 nm. The analytical curve for chlorine was linear in concentration range from 1.34x10 -6 to 2.01x10 -5 mol L -1 with a detection limit of 9.40x10 -8 mol L -1 . A sampling rate of 45 h -1 and a RSD of 1.0 % (n = 15) were obtained. The method was applied with success for chlorine determination in six water samples.
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