3D-printed flow system for determination of lead in natural waters

TALANTA

卷:168

Article

Mattio, Elodie¹  Robert-Peillard, Fabien¹  Branger, Catherine²  Puzio, Kinga²  Margaillan, Andre²  Brach-Papa, Christophe³  Knoery, Joel³  Boudenne, Jean-Luc¹  Coulomb, Bruno¹ 

[1] Aix Marseille Univ, CNRS, LCE, UMR 7376, Marseille, France

[2] Univ Toulon & Var, MAPIEM, La Garde, France

[3] IFREMER, LBCM, Nantes, France

关键词: Lead determination;    3D-printed MPFS system;    Stereolithography;    Natural waters;   

DOI  :  10.1016/j.talanta.2017.03.059

来源: Elsevier

【 摘 要 】

The development of 3D printing in recent years opens up a vast array of possibilities in the field of flow analysis. In the present study, a new 3D-printed flow system has been developed for the selective spectrophotometric determination of lead in natural waters. This system was composed of three 3D-printed units (sample treatment, mixing coil and detection) that might have been assembled without any tubing to form a complete flow system. Lead was determined in a two-step procedure. A preconcentration of lead was first carried out on TrisKem Pb Resin located in a 3D-printed column reservoir closed by a tapped screw. This resin showed a high extraction selectivity for lead over many tested potential interfering metals. In a second step, lead was eluted by ammonium oxalate in presence of 4-(2-pyridylazo)-resorcinol (PAR), and spectrophotometrically detected at 520 nm. The optimized flow system has exhibited a linear response from 3 to 120 mu g L-1. Detection limit, coefficient of variation and sampling rate were evaluated at 2.7 mu g L-1, 5.4% (n=6) and 4 sample h(-1), respectively. This flow system stands out by its fully 3D design, portability and simplicity for low cost analysis of lead in natural waters.

【 授权许可】

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