Skip to main content
Journal of Analytical Science and Technology
Fig. 2 | Journal of Analytical Science and Technology

Fig. 2

From: Development of isotope dilution-liquid chromatography tandem mass spectrometry for the accurate determination of vitamin K1 in spinach and kimchi cabbage

Fig. 2

Collisionally induced dissociation (CID) mass spectra of the molecular ions, [M + H]+ of a trans-vitamin K1, b the unknown, and c cis-vitamin K1 in positive APCI mode. A schematic illustration of the fragmentation pathways of the precursor ions is shown in figure d. The collision energy was 20 eV, and cone voltage was 60 V

Back to article page