At present our research lines focus to a miniaturization of the sample preparation stage in the analytical laboratory aiming for its simplification, a decreasing in the consumption of organic reagents (and so in waste generation) as well as for obtaining the best performance from the most common instrumentation which is present in analytical laboratories worldwide. Our purposes are governed by the principles of Green or Sustainable Analytical Chemistry.
- Solid phase microextraction (SPME) used both in the usual way or involving nanoparticles
- Stir bar sorptive extraction (SBSE)
- Liquid phase microextraction (LPME), especially dispersive liquid liquid extraction (DLLME), among others, are being investigated.
These simple approaches are used in a conventional way or combined with flow methodology, and coupled to liquid or gas chromatographs equipped with common detectors for the purpose of the determination of organic compounds, mainly pesticides and residues of pharmaceuticals in environmental, food samples and personal care products.
Similar strategies are being studied for the separation/preconcentration of metals and other inorganic analytes. In this case, again instrumentation which is commonly present in the laboratories and sometimes underused, is involved. Special attention is paid to the possibility of developing non-chromatographic procedures for the speciation of analytes such as arsenic, antimony, selenium, chromium, vanadium and mercury, among others.
Selective reactions in combination with miniaturized systems as well as selective volatilization processes in electrothermal atomization atomic absorption spectrometry are being also considered.