Analytical methods applied to the assay of sulfur-containing preserving agents

Sulfite is a largely used preservative, and represents an analyte of interest, whose level should be carefully monitored, given the implications of its use, on human health. The present paper reviews the analytical techniques applied to sulfite quantification: titrimetric, spectrometric, chromatographic, electrochemical (voltammetric, amperometric, potentiometric). The methods are detailed with respect to their analytical performances...