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3D-printed flow system for determination of lead in natural waters ArchiMer
Mattio, Elodie; Robert-peillard, Fabien; Branger, Catherine; Puzio, Kinga; Margaillan, Andre; Brach-papa, Christophe; Knoery, Joel; Boudenne, Jean-luc; Coulomb, Bruno.
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...
Tipo: Text Palavras-chave: Lead determination; 3D-printed MPFS system; Stereolithography; Natural waters.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00377/48770/49290.pdf
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3D-printed lab-on-valve for fluorescent determination of cadmium and lead in water ArchiMer
Mattio, Elodie; Robert-peillard, Fabien; Vassalo, Laurent; Branger, Catherine; Margaillan, Andre; Brach-papa, Christophe; Knoery, Joel; Boudenne, Jean-luc; Coulomb, Bruno.
In recent years, the development of 3D printing in flow analysis has allowed the creation of new systems with various applications. Up to now, 3D printing was mainly used for the manufacture of small units such as flow detection cells, preconcentration units or mixing systems. In the present study, a new 3D printed lab-on-valve system was developed to selectively quantify lead and cadmium in water. Different technologies were compared for lab-on-valve 3D printing. Printed test units have shown that stereolithography or digital light processing are satisfactory techniques for creating complex lab-on-valve units. The lab-on-valve system was composed of two columns, eight peripheral ports and a central port, and a coil integrating baffles to increase mixing...
Tipo: Text Palavras-chave: Stereolithography; Digital light processing; LOV-MSFIA; Natural waters.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00427/53874/54932.pdf
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Effect of organic matter on determination of reactive mercury in contaminated waters IPB - Escola Superior Agrária
Ramalhosa, Elsa; Río-Segade, Susana; Pereira, Eduarda; Vale, Carlos; Duarte, Armando.
Dissolved reactive mercury was determined in water samples from Ria da Aveiro, a coastal lagoon contaminated by mercury. Concentrations increased with acid dilution to a maximum of 193% in samples containing organic matter with high aromaticity, as inferred from absorbances at 250, 280 and 365 nm. Laboratory experiments with potassium hydrogenoftalate and humic acids solutions proved the influence of aromaticity in complexing mercury, how acid dilution protonates the aromatic Hg-complexes and consequent release of labile forms of mercury to solution. On the basis of these results it is proposed that natural waters from mercury contaminated ecosystems should be analysed without dilutions, otherwise additional studies should be performed to access the...
Tipo: Article Palavras-chave: Reactive mercury; Organic matter; Flow injection; Cold vapour atomic Fluorescence Spectrometry; Natural waters.
Ano: 2003 URL: http://hdl.handle.net/10198/3954
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