Autor: Merová, B.; Ondra, P.; Staňková, M.; Soural, M.; Stříbrný, J.; Hebká, L.; Lemr K.
Název práce v češtině: Validovaná LC-MS metoda stanovení muskarinu v lidské moči
Název práce v angličtině: Validated electrospray liquid chromatographic-mass spectrometric assay for the determination of muscarine in human urine
Studentská publikace: ne

Klíčová slova v angličtině: muscarine, determination, human urine, validation, liquid chromatography, mass spectrometry
Abstrakt česky: Je popsána validovaná metoda stanovení muskarinu v lidské moči založená na kapalinové chromatografii s hmotnostní detekcí.
Abstrakt anglicky: A liguid chromatography-mass spectrometry based method for determination of muscarine in human urine was developed and validated. The method involved a solid phase extraction of muscarine from urine using Strata X-CW column. Separation of muscarine was achieved within 16.0 min on reversed phase Gemini C18 analytical column (150 2.0 mm i.d., 5 m) with a mobile phase consisted of aqueous 8 mmol/L heptafluorobutyric acid and acetonitrile in a gradient mode.Mass spectrometric detection was performed at m/z 174 and m/z 216 for muscarine and acetylmuscarine (internal standard), respectively. The method has been validated according to the criteria established by the Journal of Chromatography. The linearity was satisfactory with a coefficient of determination (R2) 0.9993 at concentration rang from 0.3 ng/mL to 2.0 g/mL, LOD and LOQ for muscarine was 0.02 ng/mL and 0.3 ng/mL respectively. The found out recoveries of muscarine were 96% or 95% for concentration 0.3 ng/mL and 0.2 g/mL or 2.0 g/mL, respectively. The precision in the intra-assay-study varied from 0.48 to 1.39% and in the inter-assay-study from 2.39 to 5.49%. The accuracy ranged from –3.3 to –6%. The validation results demonstrated that the method fulfiled satisfactory requirements for precision and accuracy across the calibration curve. The applicability of the method has been demonstrated by analyzing clinical urine samples. The method offers the fast objective identification of intoxication by muscarine and can become a routine alternative to more difficult microscopic examination of spores in the gastric content in clinical practice.
Jazyk v originále: angličtina
Název časopisu: J. Chromatogr. B
Rok: 2011
Svazek (ročník): 879
Číslo časopisu v rámci uvedeného svazku: 25
Strana od-do: 2549-2553

Q1: ne

Způsob financování: IGA NS10269-3, MSM6198959216, CZ.1.05/2.1.00/03.0058