Title
Determination of chlormequat in pears by liquid chromatography/mass spectrometry
Author
Mol, H.G.J.
van Dam, R.C.J.
Vreeken, R.J.
Steijger, O.M.
Centraal Instituut voor Voedingsonderzoek TNO
Publication year
2000
Abstract
A straightforward and reliable method was developed for the determination of chlormequat in pears by liquid chromatography/mass spectrometry (LC/MS). Water and methanol were compared as extraction solvents. Because no significant differences in extraction efficiency or repeatability were found, water was chosen as the extraction solvent. The extracts were analyzed without cleanup by either an ion-trap liquid chromatograph/mass spectrometer in the single MS mode or a triple-quadrupole instrument in the MS/MS mode, using electrospray ionization. Both instruments were equally suitable for quantitation and confirmation of identity. Recoveries were 76-103%, and reproducibility was ≤12%. The lowest detection limit (0.007 mg/kg) was obtained with the triple-quadrupole instrument in the MS/MS mode. Chemicals/CAS: Chlormequat, 999-81-5; Methanol, 67-56-1; Water, 7732-18-5
Subject
Chlormequat
Methanol
Water
Chemistry
Fruit
Liquid chromatography
Mass spectrometry
Methodology
Reproducibility
Chlormequat
Chromatography, Liquid
Fruit
Mass Spectrometry
Methanol
Reproducibility of Results
Water
To reference this document use:
http://resolver.tudelft.nl/uuid:8534aaa6-7761-4996-a894-3cfe14967ff0
TNO identifier
71909
ISSN
1060-3271
Source
Journal of AOAC International, 83 (3), 742-747
Document type
article