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Microfluidic high performance liquid chromatography-chip hyphenation to inductively coupled plasma-mass spectrometry
journal contribution
posted on 2023-05-19, 17:15 authored by Bishop, DP, Blanes, L, Wilson, AB, Wilbanks, T, Killeen, K, Grimm, R, Wenzel, R, Major, D, Miroslav MackaMiroslav Macka, Clarke, D, Schmid, R, Cole, N, Doble, PAThe Agilent Chip Cube Interface is a microfluidic chip-based technology originally designed for nanospray molecular mass spectrometry in which the sample enrichment, nano-column, tubing, connectors and spray tip were integrated into a single biocompatible chip. Here we describe the hyphenation of the Chip Cube Interface to ICP-MS via modification of the standard HPLC chip design and a new total consumption nebuliser suitable for flow rates as low as 300nLmin-1. The potential of the instrument to eliminate common nanoLC - ICP-MS shortcomings such as leaks, blockages and band-broadening was demonstrated via analysis of cyanocobalamin in equine plasma. The method was linear over three orders of magnitude with an r2 of 0.9999, the peak area repeatability was 1.9% (n=7), and the detection limit was 14ngmL-1. This novel configuration of the Chip Cube Interface coupled to ICP-MS is a suitable platform for the analysis of biomolecules associated with trace metals and speciation applications.
History
Publication title
Journal of Chromatography AVolume
1497Pagination
64-69ISSN
0021-9673Department/School
School of Natural SciencesPublisher
Elsevier Science BvPlace of publication
Po Box 211, Amsterdam, Netherlands, 1000 AeRights statement
© 2017 Elsevier B.V. All rights reserved.Repository Status
- Restricted