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3D printed device for the automated preconcentration and determination of chromium (VI)

Citation

Calderilla, C and Maya, F and Cerda, V and Leal, LO, 3D printed device for the automated preconcentration and determination of chromium (VI), Talanta, 184 pp. 15-22. ISSN 0039-9140 (2018) [Refereed Article]

Copyright Statement

Copyright Elsevier B.V.

DOI: doi:10.1016/j.talanta.2018.02.065

Abstract

A 3D printed device for the fully automated disk-based solid-phase extraction (SPE) of Cr (VI) from water samples has been fabricated. The compatibility of the use of organic solvents for analyte elution with 3D printed flow devices based on polymers fabricated using stereolithography has been evaluated. The developed methodology comprises the complexation of Cr (VI) with 1, 5-diphenylcarbazide (DPC) in acidic medium and the subsequent retention of the complex in a SBD-RPS disk contained within the 3D printed device. A multisyringe flow injection analysis system with online spectrophotometric detection has been used for the automation of the method. The fabricated 3D printed device integrates the different components of the flow analysis manifold, including connectors and mixers, being a powerful approach towards the reproducible construction of highly integrated flow-based manifolds.

The extracted Cr (VI)-DPC complex is eluted with a mixture of methanol- sulfuric acid and quantified at 540 nm. The effect on the analytical signal and the optimization of variables were evaluated using multivariate and univariate techniques. A detection limit of 1 ng Cr (VI) and a linear working range of 3.2600 ng Cr (VI) were obtained using a sample volume of 2 ml. The intra-day and inter-day RSDs were 4.8% (10 μg L−1, n=12) and 3.4% (n=5, different day with a different disk), respectively. The applicability of the fabricated 3D printed device has been proved by the determination of Cr (VI) in groundwater, surface water and leachates.

Item Details

Item Type:Refereed Article
Keywords:3D printing, chromium (VI), solid-phase extraction, multisyringe flow injection analysis, water analysis
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Flow Analysis
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
UTAS Author:Maya, F (Mr Fernando Maya Alejandro)
ID Code:127823
Year Published:2018
Web of Science® Times Cited:16
Deposited By:Chemistry
Deposited On:2018-08-19
Last Modified:2018-09-11
Downloads:0

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