Increased Mass Resolution to Reduce Matrix Interference with the LC-MS/MS Analysis of Pesticides in Food Residues
Yamagishi, Y. a); Schoutsen, F.W.P. b)
a)Thermo Fisher Scientific, Yokohama, Japan
b)Thermo Fisher Scientific, The Netherlands
Purpose: To demonstrate the use of increased mass resolution by using Highly Selective Reaction Monitoring (H-SRM) to reduce the matrix effects of the analysis of food residues.
Methods: A triple quadrupole mass spectrometer with an Electrospray Ionization source (ESI), two LC quaternary pumps, an auto sampler, and an LC column.
› view the Technical Poster (PDF)
Analysis of Regulated Pesticides in Drinking Water Using Large Volume Injections, Online Pre-concentration, and Fast-HPLC with EQuan
Beck, J. b); Yang, C. b); Schoutsen, F.W.P. a)
a)Thermo Fisher Scientific, The Netherlands
b)Thermo Fisher Scientific, San Jose, CA, USA
Purpose: To demonstrate the use of Fast-HPLC and a large volume injection to analyze sub ppb concentrations of regulated pesticides in drinking water samples.
Methods: A triple quadrupole mass spectrometer with an Electrospray Ionization source (ESI), two LC quaternary pumps, an autosampler, and 2 LC columns, one for pre-concentration of the sample, the second column for the analytical analysis (EQuan). Switching between the columns is carried out by a 6 port valve controlled by the instrument software.
› view the Technical Poster (PDF)
An online high-throughput LC-MS/MS method for the direct analysis of water samples at sub ppt levels using EQuan Ghosh, D.; Beck, J.; Yang, C.
Thermo Fisher Scientific, San Jose, CA, USA
Purpose: To demonstrate the use of Fast-HPLC and a large volume injection to analyze sub ppb concentrations of regulated pesticides in drinking water samples.
Methods: A triple quadrupole mass spectrometer with ESI, two LC quaternary pumps, an autosampler, and 2 LC columns, one for pre-concentration of the sample, the second column for the analytical analysis (EQuan).
› view the Technical Poster (PDF)
Screening of Multi Pesticide Residues in Vegetables using LC/MS/MS Quantitation-Enhanced Data-Dependent Scan Saito, K.; Yamagishi, Y.; Kanai, M.
Thermo Fisher Scientific, Yokohama, Japan
Purpose: To easily and precisely screen for potential residues of known pesticides in vegetables using the Quantitation-Enhanced Data-Dependent MS/MS (QED-MS/MS) scan of triple stage quadrupole mass spectrometer.
Methods: QED-MS/MS provides MS/MS spectrum at low levels followed by a fast, highly specific full MS/MS scan for confirmation. Reverse Energy Ramp (RER) was used for the collision energy setting during the analysis. A pesticide library was made using RER, and data was automatically identified from the detected spectrum.
› view the Technical Poster (PDF)
Multi-Residue Low Level Quantification of Pesticides in Food Using Highly Resolved Selected Reaction Monitoring on a Triple Quadrupole GC/MS System
Krumwiede, D. a); Sugitate, K. b); Huebschmann, H-J. a)
a)Thermo Fisher Scientific, Bremen, Germany; b)Thermo Fisher Scientific, Yokohama, Japan
Purpose: To simultaneously analyze 103 pesticides using the TSQ Quantum GC system, using SRM and H-SRM. Additionally, to show the utility of QED MS/MS for structural confirmation of the analytes undergoing quantification.
Methods: GC analysis was performed using the Thermo Scientific TRACE GC Ultra System. Samples were injected using the Thermo Scientific TriPlus autosampler. MS analysis was carried out on a Thermo Scientific TSQ Quantum GC triple stage quadrupole mass spectrometer.
› view the Technical Poster (PDF)
› back to top
0 Items 