Agriculture Reference
In-Depth Information
Figure 6.5.
(a) Extracted ion chromatogram using single-stage Orbitrap, corresponding to the theoretical
m
/
z
of the protonated molecule of thiabendazole (
m
/
z
202.04334) and its fragments (fragment 1 (F1):
m
/
z
175.0325 and fragment 2 (F2):
m
/
z
131.0604, mass tolerance 5 ppm), and the spectrum acquired at the
elution time of the compound in a milk matrix-matched standard at 25
μ
g/kg. (b) Extracted ion
chromatogram using QqTOF, corresponding to the theoretical
m
/
z
of the protonated molecule of
thiabendazole (
m
/
z
202.0433) and its fragments (fragment 1 (F1):
m
/
z
175.0324 and fragment 2 (F2):
m
/
z
131.0604, mass tolerance 10 ppm), and the spectrum acquired at the elution time of the compound in a
milk matrix-matched standard at 25
μ
g/kg.
Source
: Ref. [64], Figure 2, p. 9358. Reproduced with
permission of Elsevier.
FWHM and UHPLC
MS at a mass resolving power of 10,000 FWHM failed to
detect all of the steroid esters in hair extracts owing to the inability to mass resolve
analyte ions from the coeluting isobaric matrix compounds. However, when the
comparison was made with coccidiostats in feed samples, the resolution power was
-
TOF
-
