Determination of Blasticidin S in Spiked Rice Using SW Voltammetry with a Renewable Silver Amalgam Film Electrode

摘要

Blasticidin S (BS) was determined in spiked rice samples by square wave voltammetry (SWV) and square wave stripping voltammetry (SWSV) using a cyclic renewable silver amalgam film electrode (Hg(Ag)FE). It was found that the compound can act as an electrocatalyst. In Britton-Robinson buffer at pH7.0a signal connected with the hydrogen evolution reaction was detected at -1.2V versus Ag/AgCl. Validation of the method was carried out. The detection and quantification limits were found to be 2.13×10 ~(-8)molL ~(-1); 7.10×10 ~(-8)molL ~(-1) for SWV and 2.65×10 ~(-9)molL ~(-1); 8.85×10 ~(-9)molL ~(-1) for SWSV, respectively.