Electrochemical detection of arsenic(III) in the presence of dissolved organic matter (DOM) by adsorptive square-wave cathodic stripping voltammetry (Ad-SWCSV)

Abstract

This study has demonstrated that As(III) can be electrochemically detected and quantified in the presence of fulvic acid (FA) and dissolved organic matter (DOM). This eliminates the need to remove DOM prior to measurement of As(III) in environmental samples. Apart from reducing analysis time and the cost of the analysis, this could be potentially useful for the development of electrochemical methods for the detection and measurement of As(III) onsite. Both synthetic samples in which FA was added and a real sample with 22.16 mg/L total organic carbon (TOC) were analyzed. © 2008 WileY-VCH Verlag GmbH & Co. KGaA.