Zobrazeno 1 - 10
of 131
pro vyhledávání: '"A.P. Bruins"'
Autor:
A.P. Bruins, Wilfried M. A. Niessen
Atmospheric-pressure ionization (API) is an important ionization technique for the study of atmospheric pressure and components, such as contaminants in air. From analytical point-of-view, API is even more important as it enabled the reliable on-line
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::009816caf66046250af21a745e7840ec
https://doi.org/10.1016/b978-0-12-409547-2.00311-5
https://doi.org/10.1016/b978-0-12-409547-2.00311-5
Autor:
S. van der Wal, Ynze Mengerink, J. Brackman, E. M. M. De Brabander, A.P. Bruins, C.M Jeronimus-Stratingh
Publikováno v:
Journal of Chromatography A, 825, 135-147. ELSEVIER SCIENCE BV
Journal of Chromatography A, 825(2), 135-147. ELSEVIER SCIENCE BV
Journal of Chromatography A, 825(2), 135-147. ELSEVIER SCIENCE BV
Separation methods for nitrile terminated poly(propylene imine) dendrimers were developed to monitor and optimize theirlarge scale production. Detailed analyses of defects within a dendrimer generation were performed by HPLC at alkaline pH(sodium hyd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d6a6950064e5a753d05ee152123f146
https://doi.org/10.1016/s0021-9673(98)00707-9
https://doi.org/10.1016/s0021-9673(98)00707-9
Autor:
A.P. Bruins
Publikováno v:
TrAC Trends in Analytical Chemistry. 13:37-43
Mass spectrometer ion sources are normally located inside a high-vacuum envelope. An ion source operating at atmospheric pressure is better suited, it not essential, for a growing number of applications. MS analysis of samples pyrolyzed under control
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a384ed9fedf7d1a221b28938d81c1baa
https://doi.org/10.1016/0165-9936(94)85057-7
https://doi.org/10.1016/0165-9936(94)85057-7
Autor:
A.P. Bruins
Publikováno v:
Journal of Chromatography A, 554(1-2), 39-46. ELSEVIER SCIENCE BV
Electrospray and ionspray techniques use samples that exist as ions or ion-molecule complexes in solution. After the dispersion of the solution into an electrically charged aerosol, the sample ions may escape from the solution into the gas phase in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a42aef0ebca099b8123f81d8bea6fb8
https://hdl.handle.net/11370/4122e8a1-411e-4957-a6b2-21f10f85135b
https://hdl.handle.net/11370/4122e8a1-411e-4957-a6b2-21f10f85135b
Autor:
A.P. Bruins, D.R. Zook
Publikováno v:
International journal of mass spectrometry and ion processes, 162(1-3), 129-147
The ion transmission in Electrospray (Ionspray) Mass Spectrometry (ESMS) was studied in order to examine the instrumental factors potentially contributing to observed ESMS linear dynamic range (LDR) limitations. A variety of means used for the invest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1963ea73f116ecfa01b756961d44ace2
https://research.rug.nl/en/publications/81a610a3-e31e-4e78-b850-a73afe442755
https://research.rug.nl/en/publications/81a610a3-e31e-4e78-b850-a73afe442755
Publikováno v:
Chemico-Biological Interactions. 39:149-168
Rats which had received N-hydroxy-2-acetylaminofluorene (N-OH-AAF) excreted two glutathione conjugates in the bile. Pretreatment with the sulphotransferase inhibitor pentachlorophenol reduced the amounts excreted by 50% suggesting that these conjugat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a0f0e6bf5bfbca9f1a9a8a207daa7bc
https://doi.org/10.1016/0009-2797(82)90118-1
https://doi.org/10.1016/0009-2797(82)90118-1
Autor:
A.P. Bruins, B.F.H. Drenth
Publikováno v:
Journal of Chromatography A. 271:71-82
The total effluent from a micro liquid chromatograph, operating at a flow-rate of 8 μl/min, has been introduced into the ion source of a quadrupole mass spectrometer, which is used in the chemical ionization mode. The solvent vapour serves as the re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7bcedfe41d4a527ec2196860a34fb54
https://doi.org/10.1016/s0021-9673(00)80200-9
https://doi.org/10.1016/s0021-9673(00)80200-9
Autor:
A.P. Bruins, H. Hendriks
Publikováno v:
Journal of Chromatography A. 190:321-330
OH- ions have been shown to produce abundant (M - H)- ions of most oxygenated mono- and sesquiterpenes. Esters are cleaved by an apparent nucleophilic displacement reaction, with the formation of RCOO- ions. Three types of essential oil of valerian,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::669b7cb2c54f1faa81aa00c82b6ec4af
https://doi.org/10.1016/s0021-9673(00)88236-9
https://doi.org/10.1016/s0021-9673(00)88236-9
Autor:
A.P. Bruins
Publikováno v:
International journal of mass spectrometry and ion processes, 48, 185-188
The negative ion chemical ionization spectra (reactant ion OH−) of digitoxin, digoxin and gitoxin are presented. Digoxin and gitoxin differ from digitoxin by the presence of an additional OH group. The spectra of digitoxin and digoxin are very simi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb0f31f272e947a93b6f5abc82289060
https://research.rug.nl/en/publications/890d8293-3875-425b-9a45-5c46ad069bbf
https://research.rug.nl/en/publications/890d8293-3875-425b-9a45-5c46ad069bbf