Modified 3D-printed device for mercury determination in waters

Elodie Mattio (1) , Nadia Ollivier (1) , Fabien Robert-Peillard (1) , Robert Di Rocco (1) , André Margaillan (2) , Christophe Brach-Papa (3) , Joel Knoery (3) , Damien Bonne (4) , Jean-Luc Boudenne (1) , Bruno Coulomb (1)

1 LCE - Laboratoire Chimie de l'environnement
2 MAPIEM - Laboratoire Matériaux Polymères Interfaces Environnement Marin - EA 4323
3 LBCM - Laboratoire Biogéochimie des Contaminants Métalliques
4 ISM2 - Institut des Sciences Moléculaires de Marseille

3D printing technology is increasingly used in flow analysis, to develop low cost and tailor-made devices. The possibility of grafting specific molecules onto 3D printed parts offers new perspectives for the development of flow systems. In this study, a MPFS system including a dicarboxylate 1,5-diphenyl-3-thiocarbazone grafted 3D-printed device has been developed for mercury determination. For this purpose, the surface of 3D-printed cuboids was first modified with amine functional groups and then grafted with dicarboxylate 1,5-diphenyl-3-thiocarbazone. This new grafted device resulted in selective mercury preconcentration with extraction and elution yields higher than 90% even at high sampling flow rates. The detection can then be carried out in two ways: a direct detection of mercury extracted onto 3D-printed grafted cuboids by atomic absorption spectrophotometry after amalgam on gold or a detection of mercury in solution after elution with L-cysteine by spectrophotometry or cold vapor atomic absorption spectrometry.

Keywords: 5-diphenyl-3-thiocarbazone; dicarboxylate 1; Poly(MethylMethacrylate) grafting; stereolithography; mercury; Multi Pumping Flow System

Domains: Chemical Sciences; Analytical chemistry

Elodie Mattio, Nadia Ollivier, Fabien Robert-Peillard, Robert Di Rocco, André Margaillan, et al.. Modified 3D-printed device for mercury determination in waters. Analytica Chimica Acta, 2019, 1082, pp.78-85. ⟨10.1016/j.aca.2019.06.062⟩. ⟨hal-02284950⟩