Determination of triazines and triazoles in grapes using atmospheric pressure matrix-assisted laser desorption/ionization high-resolution mass spectrometry
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Title |
Determination of triazines and triazoles in grapes using atmospheric pressure matrix-assisted laser desorption/ionization high-resolution mass spectrometry
Not Available |
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Creator |
Mahale V., Singh A., Phadke G.S., Ghanate A.D., Oulkar D.P., Banerjee Kaushik; Panchagnula V.
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Subject |
AP-MALDI
Triazine and triazole pesticides High resolution accurate mass analysis |
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Description |
Not Available
A chromatography-free atmospheric pressure matrix-assisted laser desorption/ionization high-resolution massspectrometry (AP-MALDI HRMS) method is described for the simultaneous and quantitative detection of triazines and triazoles in grapes. The analytes were detected reproducibly with high mass accuracy (mass error within 5 ppm) and further confirmed by collision-induced dissociation fragmentation in tandem MS. The LODs and LOQs forall the analytes were found to be in the nanogram per gram level (15–20 ng/g LOQ). Internal standard–normalized high-resolution accurate mass–extracted (HR-AM) peak intensities of the detected ions were used to generate the concentration response curves. Linearity (with R2 values around 0.99) was obtained for these curves within a concentration range of 20–200 ng/g of the individual analytes. The accuracy and precision of the method were further established using QC samples. Validation and performancecomparison of the AP-MALDI HRMS method with an existing standard method using LC with triple quadrupole MS was carried out (evaluating sensitivity, accuracy, precision, and analysis time) using 20 table-grape field samples after QuEChERS extraction. Not Available |
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Date |
2020-07-31T06:36:30Z
2020-07-31T06:36:30Z 2019-11-22 |
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Type |
Journal
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Identifier |
Mahale V., Singh A., Phadke G.S., Ghanate A.D., Oulkar D.P., Banerjee Kaushik; Panchagnula V. (2017). Determination of triazines and triazoles in grapes using atmospheric pressure matrix-assisted laser desorption/ionization high-resolution mass spectrometry. Journal of AOAC International 100 (3): 640-646
https://doi.org/10.5740/jaoacint.17-0047 http://krishi.icar.gov.in/jspui/handle/123456789/38665 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Oxford University Press
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