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In the pursuit of a portable gas detector/analyser we studied the components of an ion mobility spectrometer (IMS), which is a device that lends itself well to miniaturisation. The component we focused on was the ionizer. We fabricated a series of micro io ...
A family of cationic polyelectrolytes possessing defined chain lengths, narrow chain length distributions, uniform charge d., but substituents of different hydrophilicity at the quaternary ammonium group served as model compds. for adsorption studies. Thes ...
The fate of melamine has been studied under UV light irradiation (medium pressure mercury arc) in the presence of TiO2 and H2O2. The increase in the concentration of aromatic and aliphatic photo-products were determined in solution concomitantly with the d ...
The aim of this work has been to design, and fabricate a miniaturized electrospray-type interface for mass spectrometry analysis, which allows the nebulization of solutions by applying a high potential difference between the source and the mass spectromete ...
Ion traps are an increasingly common presence as mass analysers in commercial bench-top mass spectrometers. Such instruments, usually interfaced with electrospray ionisation or nanospray sources, are invariably aimed at organic and biological applications, ...
The derivatization of neutral transition metal carbonyl clusters with an alkoxide anion, [Mn(CO)xOR]- is discussed. The electrospray ionization mass spectrometry technique is used for the purpose. Control of the potential applied to the skimmer cone of the ...
A new protein fractionation technique based on off-gel isoelectric focusing (IEF) is presented, where the proteins are separated according to their isoelectric point (pI) in a multiwell device with the advantage to be directly recovered in solution for fur ...
A range of coordination and organometallic compounds have been analysed by quadrupole ion-trap mass spectrometry using various photoionisation methods. Atmospheric-pressure photo ionisation (APPI), which combines atmospheric-pressure chemical ionisation (A ...
Hemoglobin switching is a complex process by which distinct globin chains are produced during stages of development. In an effort to characterize the process of hemoglobin switching in the zebrafish model system, we have isolated and characterized several ...
Liq. chromatog. mass spectrometry (LC-MS) is a valuable tool in the anal. of proteins and peptides. The combination of LC-MS with different fragmentation methods provides sequence information on components in complex mixts. In this work, online packed capi ...
