The development of electrochemical methods for detecting arsenic has attracted considerable attention in the scientificliterature due to the potential high sensitivity of the method, its portability and the short time scale required for generating reproducible measurements.
A lot of effort has been put into modification of electrode surfaces and electrode materials in an attempt to improve their analytical ability for arsenic detection to achieve a limit of detection lower then the WHO recommended level of 10gL−1 [12–23]. Carbon electrodes, including carbon nanotubes (CNTs), have been widely used in anodic stripping voltammetric (ASV) determinations of a wide range of metal ions [24–29]. However, interactions between the carbon substrate and interferences in real samples