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Eric Phillips | Authors
Articles
Analysis of Pesticides in Citrus Oil Using PTV Backflush with GC–MS-MS Triple Quadrupole for High Sample Throughput
International regulations on maximum residue levels (MRLs) of pesticides in food cover hundreds of individual contaminants at the 10 ppb or below range. The analysis of citrus oil for pesticide contamination holds specific challenges.
Multiresidue Pesticide Analysis in Onion by a Modified QuEChERS Extraction and Ion Trap GC–MSn Analysis
Most recently formulated pesticides are smaller in molecular weight and designed to break down rapidly in the environment.
Lowering Detection Limits for the Analysis of PBDEs by Large Volume Injection and SIM on a Single Quadrupole
Polybrominated diphenyl ethers (PBDEs) are bioaccumulativetoxic compounds that are used as flame retardants. They have high boiling points and low thermal stability which makes analysis by GC–MS challenging. Additional bromines increase the thermal instability. A method was developed to analyze for polybrominated biphenyls using a large volume injection, short analytical column, and high mass tuning algorithm on the Thermo Scientific DSQ II with detection by EI Single Ion Monitoring (SIM).
Analyzing Pesticides in Rice Using GC–MS-MS and QuEChERS Sample Preparation
Thermo
Quick Start-Up for a Modified QuEChERS Multi-residue Pesticide Analysis in Lettuce by GC–MSn
Use of a modified QuEChERS sample preparation procedure was fully evaluated for identification and quantitation of pesticides in lettuce using gas chromatography and ion trap mass spectrometry. Final results compared favorably to the reporting and detection limits offered by several worldwide agencies, demonstrating a robust and reliable solution for analyzing pesticide residues in lettuce.