Laboratory Assessment of a DPD Reference Actinometer for Calibrating UV Intensity Sensors

摘要

This paper presents a laboratory assessment of the DPD (N,N-Diethyl-p-phenylenediamine) actinometer to determine its suitability as a reference actinometer for verifying the calibration of on-line electronic duty sensors in UV reactor systems. The DPD chemical is commonly used for measuring chlorine residuals in drinking water, but has not previously been considered as an actinometer for performing UV irradiance measurements. The laboratory assessment was not completed in time for results to be included herein, so this paper presents the results of a literature search of the DPD actinometer and the laboratory assessment methodology. Laboratory results will be presented at the Joint World Congress in August 2007.