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REVISTA DE CHIMIE
https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie, Volume 54, Issue 1, pp. (2003)




Automated Flow Injection Analysis Device and Methods for Determination of Chlorine in Drinking Waters Andrei F. Danet, Mihaela-Carmen Cheregi, Mihaela Badea, Arina Radu, Hassan Y. Aboul-Enein

Abstract:

A flow injection (FI) device with spectrophotometric detection based on utilization of a peristaltic pump, four solenoid valves with three ways and a spectrophotometric flow cell were designed and optimized for the chlorine determination in drinking waters. The FI device was entirely conducted by a computer and data acquisition and processing were performed using VISUAL LAB software. Two analytical methods based on the N,N-diethyl-p-phenylenediamine (method I) and o-tolidine (method II) enhanced reactions with chlorine. Method I allowed the chlorine determination in the range 0.1 - 10 mg/mL and method II in the range 0.05 - 8 mg/mL. The sampling rates were: 120 samples/h and 90 samples/h, respectively. In order to minimize the consumption of reagents, a new flow methodology based on the “tandem injection” of samples and reagents was tested. Keywords: automated flow injection system, solenoid valves device, software VISUAL LAB, chlorine determination

Issue: 2003 Volume 54, Number 1
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