Results 261 to 270 of about 320,261 (288)
Some of the next articles are maybe not open access.
Matrix solid-phase dispersion (MSPD) in chromatographic analysis of essential oils in herbs
Journal of Pharmaceutical and Biomedical Analysis, 2010Matrix solid-phase dispersion (MSPD) is a simple and cheap sample preparation procedure allowing for the reduction of organic solvent consumption, exclusion of sample component degradation, improvement of extraction efficiency and selectivity, elimination of additional sample clean-up and pre-concentration step before chromatographic analysis.
Andrzej L, Dawidowicz, Ewelina, Rado
openaire +2 more sources
Matrix solid-phase dispersion technique for the determination of moxidectin in bovine tissues
The Analyst, 1996An HPLC method has been developed for the determination of moxidectin in bovine tissues. The extraction and clean-up procedure is based on the matrix solid-phase dispersion technique. Control and moxidectin-fortified bovine tissue samples (0.25 g) are blended with octadecyl (C18 end-capped) packing material.
Alvinerie, M. +6 more
openaire +3 more sources
Anal. Proc., 1995
An extraction procedure has been developed for β-agonists in liver samples using combined MSPD-C18 SPE clean-up. The procedure is suitable for the determination of compounds from both β-agonist classes, the substituted aniline-type compounds (e.g., clenbuterol) and the phenolictype compounds (e.g., salbutamol), at levels below 1 ng g–1.
D. Boyd, M. O'Keeffe, M. R. Smyth
openaire +1 more source
An extraction procedure has been developed for β-agonists in liver samples using combined MSPD-C18 SPE clean-up. The procedure is suitable for the determination of compounds from both β-agonist classes, the substituted aniline-type compounds (e.g., clenbuterol) and the phenolictype compounds (e.g., salbutamol), at levels below 1 ng g–1.
D. Boyd, M. O'Keeffe, M. R. Smyth
openaire +1 more source
Multi-residue analysis of penicillin residues in porcine tissue using matrix solid phase dispersion†
The Analyst, 1998The aim of this study was to develop a multi-residue method for the analysis of penicillins in animal tissue. Matrix solid phase dispersion (MSPD) was employed to extract the residues and the extracts were then cleaned-up by C18 solid phase extraction (SPE). Pre-column derivatisation using acetic anhydride and 1,2,4-triazole in the presence of mercuric
M, McGrane, M, O'Keeffe, M R, Smyth
openaire +2 more sources
Ion pair assisted micro matrix solid phase dispersion extraction of alkaloids from medical plant
ELECTROPHORESIS, 2019AbstractA novel micro matrix solid phase dispersion method was successfully used for the extraction of quaternary alkaloids in Phellodendri chinensis cortex. The elution of target compounds was accomplished with sodium hexanesulfonate as the eluent solvent.
Xin Dong +9 more
openaire +2 more sources
Matrix solid‐phase dispersion with sand in chromatographic analysis of essential oils in herbs
Phytochemical Analysis, 2010AbstractIntroduction – Matrix solid‐phase dispersion (MSPD) is a very simple, cheap and relatively quick sample preparation procedure which involves simultaneous disruption and extraction of various solid and semi‐solid samples due to the direct mechanical blending of the sample with a SPE sorbent, mainly C18.
Andrzej L, Dawidowicz +2 more
openaire +2 more sources
Journal of Chromatography A, 1994
A matrix solid-phase extraction (MSPD) and gas chromatographic-electron-capture detection method for determining polychlorinated biphenyls (PCBs) in fish (grass carp) is described. The method uses an octadecylsilyl-derivatized silica and acidic silica gel-based MSPD co-column for direct in-line clean-up.
Y C, Ling, M Y, Chang, I P, Huang
openaire +2 more sources
A matrix solid-phase extraction (MSPD) and gas chromatographic-electron-capture detection method for determining polychlorinated biphenyls (PCBs) in fish (grass carp) is described. The method uses an octadecylsilyl-derivatized silica and acidic silica gel-based MSPD co-column for direct in-line clean-up.
Y C, Ling, M Y, Chang, I P, Huang
openaire +2 more sources
Journal of Separation Science, 2012
A simplified sample preparation method, based on the matrix solid‐phase dispersion technique, is proposed for the sensitive determination of 15 organic fungicides in vineyard soils by gas chromatography–mass spectrometry (GC–MS). Under final working conditions, sieved samples (0.5 g) were blended and dispersed with 2 g of C18 and transferred to a ...
Inmaculada, Carpinteiro +4 more
openaire +2 more sources
A simplified sample preparation method, based on the matrix solid‐phase dispersion technique, is proposed for the sensitive determination of 15 organic fungicides in vineyard soils by gas chromatography–mass spectrometry (GC–MS). Under final working conditions, sieved samples (0.5 g) were blended and dispersed with 2 g of C18 and transferred to a ...
Inmaculada, Carpinteiro +4 more
openaire +2 more sources
Journal of Agricultural and Food Chemistry, 2003
A method based on matrix solid-phase dispersion (MSPD) was developed for the gas chromatographic (GC) determination of chloramphenicol (CAP) residues in animal muscle tissue. Muscle tissue was blended with octadecylsilyl-derivatized silica (C(18)). A column made from the C(18)/muscle tissue matrix was washed with n-hexane and acetonitrile/water (5 + 95)
Kubala-Drinčić, Helena +4 more
openaire +3 more sources
A method based on matrix solid-phase dispersion (MSPD) was developed for the gas chromatographic (GC) determination of chloramphenicol (CAP) residues in animal muscle tissue. Muscle tissue was blended with octadecylsilyl-derivatized silica (C(18)). A column made from the C(18)/muscle tissue matrix was washed with n-hexane and acetonitrile/water (5 + 95)
Kubala-Drinčić, Helena +4 more
openaire +3 more sources