Increasing the technology readiness level of the fully miniaturized analytical system based on optical emission spectrometry in a capacitively coupled plasma microtorch with a low-resolution spectrometer and sample introduction by electrothermal vaporization using a miniaturized vaporizer (SSETV-μCCP-OES) from TRL3 to TRL4, through the development and validation of methods with a high greenness and whiteness degree and broad applicability in environmental and food quality control, by determining several elements of wide interest (Hg, Cd, Pb, Cu, Zn, As, Se), using the direct introduction of liquid microsamples by electrothermal vaporization after combustion-assisted digestion, with or without preconcentration by micro-solid phase extraction (µ-SPE) and separation of the analytes from the sample matrix.
Specific objectives:
Optimization of the combustion-assisted digestion and of the μ-SPE with sorbents based on C18 silica or functionalized mesoporous silica for the extraction/preconcentration of the elements and testing of the analytical applicability of the TRL3 SSETV-μCCP-OES demonstrator for ex-situ and on-site analytical procedures;
Validation, characterization and improvement of the analytical performance of the SSETV-μCCP-OES-based methods with and without ex-situ and on-site μ-SPE preconcentration for food and environmental quality control through single-element determination or simultaneous multielement determination;
Characterization of the greenness and whiteness degree and extension of the applicability of the single-element or multielement methods validated on SSETV-μCCP-OES with and without ex-situ/on-site μ-SPE preconcentration, and through the demonstration of the utility and capacity on real samples;
