Electrochemical generation of Cu(I) complexes in aqueous solutions studied by on-line mass spectrometry
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Ionization energies (IE) of [M + zH]z+ (z+) electrospray-produced polypeptides were detd. by electron ionization in a Penning cell of 4.7 and 9.4 .T Fourier transform mass spectrometers. For z = 1+ and substance P, the found IE value of 11.0+-0.4 eV is in ...
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 ...
"Thermal desorption experiments" were carried out during which heavy metal evaporation was studied by on-line monitoring. This could be achieved by the use of a tubular furnace connected to a heavy metal detector, i.e. an ICP-OES (inductively coupled plasm ...
The effects of background n- and p-type doping on Zn diffusion in GaAs/AlGaAs multilayered structures are investigated by secondary-ion-mass spectrometry and photoluminescence measurements. Zn diffusions are performed at 575 degrees C into Si-doped, Be-dop ...
We present results obtained from modeling the septum assessment experiments of the JET MkIIGB divertor with the B2-Eirene code package. Similar L-mode discharges have been performed with and without septum, varying density and gas puffing location. High an ...
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 ...
A review, with 9 refs., is given on trace element anal. by mass spectrometry (MS) and potentiometric stripping anal. (PSA). The key question of the problem is detn. of the structure of the samples (i.e. distribution functions and concns. of atoms, mols., c ...
Solutions of the strong complexing agent ethylenediaminetetraacetic acid (EDTA) and Cu, Pb, Cd, Al, and Fe(III) were examined by electrospray mass spectrometry (ES/MS). Uncomplexed EDTA and metal-EDTA complexes survive the electrospray process intact and c ...
The use of many plastic packaging materials such as PVC, PAN, etc. to protect food and beverages is restricted because of toxicity and recycling problems and there is a need for the development of new packaging materials with good gas barrier properties. P ...
The diffusion of Mn, Cr, and Ti in single crystalline copper was investigated in the temperature range between 582 and 800 K, 639 and 829 It and 621 and 747 K, respectively. Ion beam sputtering in combination with secondary ion mass spectrometry (SIMS) was ...