Zobrazeno 1 - 10
of 489
pro vyhledávání: '"J. Hlavay"'
Publikováno v:
Acta Archaeologica Academiae Scientiarum Hungaricae. 57:395-422
Autor:
Z. Krivácsy, J. Hlavay
Publikováno v:
Talanta. 42:613-620
Four different calibration methods were used for quantitative analysis of quartz and calcite in atmospheric aerosols by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS): (A) conventional calibration with one measurement on each st
Autor:
J. Hlavay, Z. Krivácsy
Publikováno v:
Journal of Molecular Structure. 349:289-292
In this paper a method for the reliable quantitative analysis of individual inorganic phases of solid samples by diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) is described. It is shown that with reproducible sample preparation
Publikováno v:
Environment International, Vol 21, Iss 3, Pp 325-331 (1995)
Complex ion exchange and adsorption methods were used for drinking water purification. Na-clinoptilolite was applied for selective removal of ammonium ions. The ion exchange capacity was 0.47 mg NH4+/g, and 0.2 mg NH4+/L breakthrough concentration wa
Autor:
Z. Krivácsy, J. Hlavay
Publikováno v:
Spectrochimica Acta Part A: Molecular Spectroscopy. 50:2197-2202
A mathematical model between the relative error in the Kubelka—Munk (K—M) function and the sample concentration has been determined if the K—M function is linear with the sample concentration, c ≤ w/w%. The theoretical model has been investig
Publikováno v:
Toxicological & Environmental Chemistry. 42:175-182
Nineteen air pollution point sources (emission points) for three industries, and 16 deposited dusts within and around a highly polluted city were sampled. Morphological, mineral and elemental composition of dust were determined. It was found that, de
Autor:
J. Hlavay, Z. Krivácsy
Publikováno v:
Spectrochimica Acta Part A: Molecular Spectroscopy. 50:49-55
Parameters of sample packing in diffuse reflectance IR Fourier transform spectroscopy (DRIFTS) have been investigated and optimized. One MPa pressure applied for 1 min was found to provide simultaneously at least ±3% reproducibility and appropriate
Publikováno v:
Biosensors and Bioelectronics. 9:189-195
Fibre-optic biosensors were constructed for determination of hypoxanthine and xanthine. Xanthine oxidase and peroxidase were immobilized on different preactivated membranes which were subsequently mounted onto the tip of a fibre-optic bundle. The H2O
Autor:
G. Wesemann, J. Hlavay
Publikováno v:
Science of The Total Environment. 136:33-42
Dusts were collected by personal sampler on membrane filter from different workplaces. Respirable size ( μ m) and coarse fractions of airborne dust were separated by a cyclone. Only the respirable fraction can penetrate into the deeper portions of t
Publikováno v:
Science of The Total Environment. 136:93-99
Respirable-size ( μ m) and coarse fractions (particle size 5–20 μm) of airborne dusts were sampled by a personal sampler. Welder mist, airborne dust associated with grinding processes and control groups were sampled in a metal processing assembly