Ion-trap versus quadrupole for analysis of quaternary ammonium herbicides by LC-MS |
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Authors: | R Castro E Moyano M T Galceran |
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Institution: | (1) Dept. Química Analítica, Universidad de Barcelona, Diagonal 647, 08028 Barcelona, Spain |
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Abstract: | Summary An ion-trap mass spectrometer for determination of quaternary ammonium herbicides in water samples is evaluated. Implementation
of the method previously optimized in a quadrupole mass spectrometer (VG Platform II) in an ion-trap (LCQ) required modifications
to the sample inlet of the electrospray source. Quality parameters were established and detection limits, after trace enrichment,
range 5–50 ng L−1. Good reproducibilities (day-to-day and run-to-run) <12% were obtained. The method was applied to analysis of spiked samples
and the results were comparable with those determined using a quadrupole mass spectrometer. |
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Keywords: | Column liquid chromatography MS detection Quarternary ammonium herbicides Ion trap vs quadrupole Water analysis |
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