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Simplify and speed up sample preparation with Resprep dSPE tubes! Herewe show the extraction and clean-up
of pesticide residues from olive oil samples—twice as fast as GPC, with only a fraction of the solvent required for
conventional SPE.
Prepare Olive Oil Samples for Pesticide Residue Analysis in Half the
TimeWith a Fraction of the Solvent Using dSPE
Accurate testing for mineral oil hydrocarbons (MOHs) in food and packaging is imperative to the safety
of our food supply. Turn to Restek for the certified referencematerials (CRMs), HPLC columns, GC
guard columns, and GC analytical columns you need for world-class analysis of mineral oil saturated
hydrocarbons (MOSH) andmineral oil aromatic hydrocarbons (MOAH) via online LC/GC coupling. (PDF -
1193kB)
Accurately Determine Mineral Oil Hydrocarbons in Food and
Packaging
Convenient, reproducible analyses for hydrophilicmolecules with widely varying polarity Glucosinolates
with hydrophilic functional groups are very difficult to retain by conventional reversed phase HPLC, and
when the functional groups in a sample are diverse, polarity can differ widely, complicating the
problem. Until now, reversed phase HPLC with an ion pairing reagent has been the inconvenient, but
necessary, approach to these analyses. This 2-page note describes a column and conditions for
analyses of glucosinolates, without ion pairing. (PDF - 435kB)
HPLC Analysis of Glucosinolates in Vegetable Extracts without Ion
Pairing Using an Ultra Aqueous C18 Column
We compared the efficacy of dSPE and cSPE cleanupmethods formultiresidue pesticide analysis of
QuEChERS extracts of finished tobacco products using GCxGC-TOFMS. Cleanup with dSPE tubes
containing 7.5mg of GCB and 25mg of PSA produced better results than othermethods, with average
recoveries of 92% and 91% for 500 ppb and 50 ppb fortifications respectively.
Evaluation of Dispersive and Cartridge Solid Phase Extraction (SPE)
Cleanups for Multiresidue Pesticides in QuEChERS Extracts of
Finished Tobacco Using GCxGC-TOFMS
LC-MS/MS is popular formonitoring pesticide residues in food due to its selectivity and sensitivity;
however, matrix effects can cause poor data quality and difficult quantification. We evaluated the
relative effectiveness of sample dilution, QuEChERS cleanup, solvent-based calibration, andmatrix-
matched calibration strategies tomitigatematrix effects in celery, kale, avocado, lime, and brown rice
flour.
Mitigating Matrix Effects: Examination of Dilution, QuEChERS, and
Calibration Strategies for LC-MS/MS Analysis of Pesticide Residues
in Diverse Food Types
Stop spending your time andmoney developing LC-MS/MSmulti-residue pesticidemethods andmixing
reference standards when you could be running samples! Restek’s trusted food safety experts have
already done thework for you—with guaranteed accuracy and at a lower cost. (PDF - 2034kB)
Accurately Detect and Quantify 204 Pesticides of Global Concern by
LC-MS/MSWith Our New Certified Reference Materials Kit
Separate isobaric polycyclic aromatic hydrocarbons, including priority EFSA PAH4 compounds
benz[a]anthracene, chrysene, benzo[b]fluoranthene, and benzo[a]pyrene, easily and accurately on an
Rxi®-PAH column. Whether you needmore resolution or faster analysis, these newGC columns offer
the selectivity and efficiency you need for food safety and environmental PAH analysis. (PDF - 826kB)
New Rxi®-PAHGC Column; Resolve Important Isobaric Polycyclic
Aromatic Hydrocarbons for Food Safety and Environmental Methods
Learn how to use the QuEChERS approach to perform faster, easier sample preparation and cleanup for
multiresidue pesticide analysis. Q-sep™ QuEChERS products save time, money, andmaterials
compared tomodified Lukemethods. (PDF - 2874kB)
QuEChERS Products: Fast, Simple Sample Prep for Multiresidue
Pesticide Analysis
A Comprehensive Approach to Pesticide Residue Testing, Including
Foods, Flavors&Fragrances
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