Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Roberto Alzaga"'
Publikováno v:
Anal. Methods. 4:1498-1506
We show the use of NMR spectroscopy to develop detailed understanding of a reaction mechanism during development of a manufacturing process for an active pharmaceutical ingredient (API). This includes structural elucidation of reaction starting mater
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7da9579531343a88957b0a2b2c177727
https://doi.org/10.1039/c1ay05384a
https://doi.org/10.1039/c1ay05384a
Publikováno v:
Environmental Technology. 29:1275-1283
A reliable analytical procedure was developed to determine trace levels of organochlorine compounds in neuston samples. Freeze-dried samples were extracted by sonication (3 x 15 ml cyclohexane, 15 min) followed by gel permeation chromatography (GPC)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5554fc47f8d10c29261dae7afecf8367
https://doi.org/10.1080/00207210802233524
https://doi.org/10.1080/00207210802233524
Autor:
Andrew M. Lipczynski, Roberto Alzaga, Karen Taylor-Worth, Robert W. Ryan, Roman Szucs, Pat Sandra
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 45:472-479
A simple, reliable and fast procedure for the simultaneous determination of residues of some common alkylating agents (AAs), such as mesylates, besylates, tosylates and sulfates, employed in drug synthesis, has been developed by in situ derivatizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d71f32efb391fd6a1c8e1b1b7720ed08
https://doi.org/10.1016/j.jpba.2007.07.017
https://doi.org/10.1016/j.jpba.2007.07.017
Publikováno v:
Journal of Chromatography A. 1083:1-6
A procedure for the determination of perfluorocarboxylic acids (i.e. PFC7–10A) in sediment by pressurized fluid extraction (PFE), derivatization, headspace solid-phase microextraction and GC–MS determination in the negative ion chemical ionisatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::691d4428c7e289ee66d8af77a2d31c42
https://doi.org/10.1016/j.chroma.2005.06.036
https://doi.org/10.1016/j.chroma.2005.06.036
Publikováno v:
International Journal of Environmental Analytical Chemistry. 85:543-552
Alkylthiols are very reactive and highly volatile compounds, and thus it is difficult to determine these in the water phase. In the present work, an in situ derivatization step prior to solid-phase microextraction (SPME) has been developed for their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41556200bb792c721091dbc5b96e4c6a
https://doi.org/10.1080/03067310500107195
https://doi.org/10.1080/03067310500107195
Autor:
Roberto Alzaga, Josep M. Bayona
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
8 pages, 4 figures, 3 tables.-- PMID: 15296400 [PubMed].-- Printed version published Jul 9, 2004.
A rapid, selective and simple analytical procedure using tetrabutylammonium as ion pair in conjunction with solid-phase microextraction followed by
A rapid, selective and simple analytical procedure using tetrabutylammonium as ion pair in conjunction with solid-phase microextraction followed by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f458ddb0d83779a29d38911212f65727
https://doi.org/10.1016/j.chroma.2004.05.015
https://doi.org/10.1016/j.chroma.2004.05.015
Publikováno v:
Journal of Chromatography A. 1025:133-138
A rapid and simple fractionation procedure using solid-phase extraction (SPE) cartridges was developed for an accurate determination of aliphatic and polycyclic aromatic hydrocarbons in petroleum residues and further application in chemical fingerpri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1616f0121be48b9300cc2586cf034e0a
https://doi.org/10.1016/j.chroma.2003.10.080
https://doi.org/10.1016/j.chroma.2003.10.080
Publikováno v:
International Journal of Environmental Analytical Chemistry. 82:415-430
Leachates derived from landfills constitute a potential risk of groundwater pollution because a variety of contaminants can be released by leaking from the contention system. Therefore, the leachate composition is of interest of their appropriate man
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e179cc71aae0f283350a802801a344c
https://doi.org/10.1080/0306731021000018116
https://doi.org/10.1080/0306731021000018116
Publikováno v:
Science of The Total Environment. 242:167-178
A variety of mono- and di-chlorinated and brominated triphenylamines were identified in the sludge and contaminated soils affected by a toxic waste spill that occurred in the Los Frailes pyrite mine (SW Spain). A negative gradient of aromatic amine c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9dd3ee43a55e5fe6e187dfcb389a16d6
https://doi.org/10.1016/s0048-9697(99)00382-4
https://doi.org/10.1016/s0048-9697(99)00382-4
Development of a novel supercritical fluid extraction procedure for lanolin extraction from raw wool
Publikováno v:
Analytica Chimica Acta. 381:39-48
A procedure based on supercritical fluid extraction (SFE) has been developed for the determination of lanolin present on raw wool fibres. Residual lanolin remaining in the fibres following a SFE was determined according to a standard method (Soxhlet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae4a605c2de0a079a08818c4cf565590
https://doi.org/10.1016/s0003-2670(98)00712-0
https://doi.org/10.1016/s0003-2670(98)00712-0