Chemical contaminants are components likely to have harmful effects on Human health and/or other living organisms. Therefore, we need to be able to analyse them in various samples (foods, pharmaceuticals or environmental).
However, contaminant analysis is delicate. Indeed those compounds are usually at trace levels (or ultra-trace levels – see figure) in samples ; that is why sensitive and selective analytical methods are necessary. Besides, multiple sources or error exist that may bias the analytical result.
In this sheet, the analytical approach to perform this analysis, as well as the main pitfalls that could falsify the analytical results, will be detailed.