Liang Qiao

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Related publications (47)

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Electrochemical Push–Pull Scanner with Mass Spectrometry Detection

Hubert Girault, Andreas Stephan Lesch, Liang Qiao, Fernando Cortes Salazar, Gunther Wittstock, Dmitry Momotenko

This manuscript presents a push-pull electrochem. scanner able to image reactivity of initially dry surfaces by scanning electrochem. microscopy (SECM) and to probe mols. present or generated at the surface by mass spectrometry (MS). The proof-of-concept i ...

Amer Chemical Soc2012

Specific On-Plate Enrichment of Phosphorylated Peptides for Direct MALDI-TOF MS Analysis

Hubert Girault, Liang Qiao, Christophe Roussel

An on-plate specific enrichment method is presented for the direct analysis of peptides phosphorylation. An array of sintered TiO2 nanoparticle spots was prepared on a stainless steel plate to provide porous substrate with a very large specific surface and ...

American Chemical Society2007

Porous silica enhanced proteolysis during Off-Gel separation for efficient protein identification

Hubert Girault, Liang Qiao, Mohammad Reza Pourhaghighi

An advanced approach is developed in this work for simultaneous on-line separation and digestion of proteins by combining the Off-Gel isoelectric focusing (IEF) and enzymatic nanoreactor enhanced proteolysis. The nanoreactor was prepared by preloading tryp ...

Elsevier2015

Surprising acidity of hydrated lithium cations in organic solvents

Hubert Girault, Pekka Eero Peljo, Liang Qiao, Haiqiang Deng, Thomas James Stockmann

Lithium cations are shown to have a significant role on catalyzing oxygen and proton reduction along with SN1 reactions in biphasic systems. We propose that this catalytic effect is due to the surprising acidity of the hydrated cations; interactions betwee ...

Royal Society of Chemistry2014

Compatible Buffer for Capillary Electrophoresis and Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry

Hubert Girault, Liang Qiao, Natalia Gasilova

A compatible buffer system for the coupling of capillary electrophoresis (CE) with matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) was developed. The employed interface consists of a robot to drive a sliver-covered separation capil ...

Royal Society of Chemistry2013

Standard addition strip for quantitative electrostatic spray ionization mass spectrometry analysis: Determination of caffeine in drinks

Hubert Girault, Liang Qiao, Christophe Roussel, Elena Tobolkina

Standard addition strips were prepared for the quantitative determination of caffeine in different beverages by electrostatic spray ionisation mass spectrometry (ESTASI-MS). The gist of this approach is to dry spots of caffeine solutions with different con ...

Elsevier2014

On-Chip Spyhole Mass Spectrometry for Droplet-Based Microfluidics

Hubert Girault, Liang Qiao, Natalia Gasilova, Qiuliyang Yu

For efficient coupling of droplet-based microfluidics with mass spectrometry (MS), a spyhole drilled on the top of a microchip is used to sample the passing droplets by electrostatic-spray ionization (ESTASI) MS. The technique involves placing an electrode ...

Wiley-VCH Verlag GmbH2014