Modified 3D-printed device for mercury determination in waters

authors

  • Mattio Elodie
  • Ollivier Nadia
  • Robert-Peillard Fabien
  • Di Rocco Robert
  • Margaillan André
  • Brach-Papa Christophe
  • Knoery Joel
  • Bonne Damien
  • Boudenne Jean-Luc
  • Coulomb Bruno

keywords

  • Mercury
  • Multi Pumping Flow System
  • Stereolithography
  • PolyMethylMethacrylate grafting
  • Dicarboxylate 1
  • 5-diphenyl-3-thiocarbazone

document type

ART

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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