Microchip based sample treatment device interfaced with ICP-MS for the analysis of transition metals from environmental samples

A downscaled solid phase (SPE) device applicable for sample preparation prior to ICP-MS monitoring, have been constructed making use of the lab on a chip concept. Standard photolithography and wet chemical etching were used to fabricate glass microfluidic devices accommodating three microchannels, e...

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Bibliographic Details
Published in:Arabian journal of chemistry 2011-04, Vol.4 (2), p.195-203
Main Authors: AlSuhaimi, Awadh O., McCreedy, Tom
Format: Article
Language:English
Subjects:
Lab on a chip
Metals monitoring
Microchip solid phase extraction
Microfluidic device
Remote miniaturized sample treatment
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Summary:A downscaled solid phase (SPE) device applicable for sample preparation prior to ICP-MS monitoring, have been constructed making use of the lab on a chip concept. Standard photolithography and wet chemical etching were used to fabricate glass microfluidic devices accommodating three microchannels, each of them incorporating a defined section that could be packed with SPE materials; selective chelating resin. The microfluidic device was interfaced with the ICP-MS instrument throughout a low flow rate concentric nebuliser using a Teflon connector, and coupled with a flow injection manifold delivering samples and reagents via a manually operated splitting valve. The feasibility of the miniaturized prototype to perform SPE of trace metals was proved by analyzing trace metals, Cd, Co, and Ni, in seawater reference materials; CASS-2 and SLEW-1. The obtained result was in good agreement with the certified values. The device could be used as a remote miniaturized sample treatment for field work.
ISSN:1878-5352
1878-5379
DOI:10.1016/j.arabjc.2010.06.037