Modified 3D-printed device for mercury determination in waters

Abstract : 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.
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Submitted on : Thursday, September 12, 2019 - 12:27:25 PM
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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, Elsevier Masson, 2019, 1082, pp.78-85. ⟨10.1016/j.aca.2019.06.062⟩. ⟨hal-02284950⟩

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