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An improved N,N′-diethyl-p-phenylenediamine (DPD) method for the determination of free chlorine based on multiple wavelength detection

Chemical EngineeringEngineeringImproved NFree ChlorineMultiple Wavelength DetectionSpectroscopyNatural SciencesUv-vis SpectroscopyAbsorption SpectroscopyAnalytical ChemistryChemistryOptical SensorSpectrochemical AnalysisOptical Sensors