1995
DOI: 10.1016/0731-7085(95)01630-9
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Development and validation of an LC/MS/MS method for the determination of l-hyoscyamine in human plasma

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Cited by 35 publications
(21 citation statements)
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“…A family of restricted access sorbents, namely alkyl diol silica (ADS), belonging to the group of internal surface reversedphase (ISRP) supports, has been applied successively for on-line sample clean-up prior to the determination of compounds in different biological matrices [15][16][17][18][19]. After direct injection of biological samples, macromolecules, such as proteins, are flushed to the waste due to an appropriate pore diameter (about 6 nm) of the silica particles, while low molecular-mass compounds can penetrate into the pores and be retained by interaction with butyryl (C 4 ), capryoyl (C 8 ) or stearoyl (C 18 ) moieties bonded to the inner surface. The molecular weight cut-off is approximately 15 kDa.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…A family of restricted access sorbents, namely alkyl diol silica (ADS), belonging to the group of internal surface reversedphase (ISRP) supports, has been applied successively for on-line sample clean-up prior to the determination of compounds in different biological matrices [15][16][17][18][19]. After direct injection of biological samples, macromolecules, such as proteins, are flushed to the waste due to an appropriate pore diameter (about 6 nm) of the silica particles, while low molecular-mass compounds can penetrate into the pores and be retained by interaction with butyryl (C 4 ), capryoyl (C 8 ) or stearoyl (C 18 ) moieties bonded to the inner surface. The molecular weight cut-off is approximately 15 kDa.…”
Section: Introductionmentioning
confidence: 99%
“…Several analytical methods in combination with different detection systems have been developed for the analysis of atropine in plant extracts, pharmaceutical dosage forms and in biological fluids [5][6][7][8][9][10][11]. Although the chromatographic methods could determine atropine in small concentrations, some complex and time consuming off-line procedures, such as liquid-liquid extraction (LLE) or solid phase extraction (SPE) using conventional sorbents, were used to extract atropine from various sample matrices.…”
Section: Introductionmentioning
confidence: 99%
“…Identification et dosage (6,15,(20)(21)(22)(23)(24)(25)(26) L'analyse toxicologique des alcaloïdes de ces solanacées est extrêmement délicate en raison des faibles concentrations susceptibles d'exercer une action pharmacologique. Ainsi pour l'atropine, la CG-SM après dérivation puis acquisition en mode sélection d'ions, la chromatographic liquide avec paire d'ions, ou l'élec-trophorèse capillaire, présentent des limites de quantification respectives de 10 ng/ml, 400 ng/ml et 200 ng/ml, ce qui est insuffisant pour réaliser des dosages sanguins.…”
Section: Scopolamineunclassified
“…Pour cette molécule, il est possible d'utiliser la CG/SM après dérivation puis acquisition en mode sélection d'ions (56), la limite de quantification est de 2 ng/ml. Pour l'hyoscyamine en revanche qui présente une demi-vie de 3 à 8 heures et un Vd de 1,4 1, les concentrations thérapeutiques de 0,1 à 1 ng/ml sont beaucoup trop faibles pour être détectées par cette technique et il faut faire appel à la chromatographic liquide couplée à une double spectrométrie de masse ou CL/SM/SM (57). En ce qui concerne la confirmation d'une intoxication par les morelles, la mise en éviden- (16), Meyer (38), Uges (36).…”
Section: Alcaloïdes Synthétiques Et Naturels Anticholinergiquesunclassified