Modified 3D-printed device for mercury determination in waters

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.


Stereolithography, Poly(methylmethacrylate) grafting, Dicarboxylate 1,5-diphenyl-3-thiocarbazone, Multi pumping flow system, Mercury

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Mattio Elodie, Ollivier Nadia, Robert-Peillard Fabien, Di Rocco Robert, Branger Catherine, Margaillan Andre, Brach-Papa Christophe, Knoery Joel, Bonne Damien, Boudenne Jean-Luc, Coulomb Bruno (2019). Modified 3D-printed device for mercury determination in waters. Analytica Chimica Acta. 1082. 78-85.,

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