F
Frank J Schenck
Researcher at Food and Drug Administration
Publications - 42
Citations - 5894
Frank J Schenck is an academic researcher from Food and Drug Administration. The author has contributed to research in topics: Solid phase extraction & Extraction (chemistry). The author has an hindex of 21, co-authored 42 publications receiving 5208 citations.
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Journal ArticleDOI
Fast and Easy Multiresidue Method Employing Acetonitrile Extraction/Partitioning and "Dispersive Solid-Phase Extraction" for the Determination of Pesticide Residues in Produce
TL;DR: A simple, fast, and inexpensive method for the determination of pesticide residues in fruits and vegetables is introduced and effectively removes many polar matrix components, such as organic acids, certain polar pigments, and sugars, to some extent from the food extracts.
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Does further clean-up reduce the matrix enhancement effect in gas chromatographic analysis of pesticide residues in food?
TL;DR: Sample extracts of apples, peas, green beans, oranges, raspberries, clementines, carrots, and wheat obtained using the Food and Drug Administration and Canadian Pest Management Regulatory Agency multiresidue methods for pesticides were subjected to clean-up using different solid-phase extraction (SPE) cartridges in an attempt to reduce or eliminate the matrix enhancement effect.
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Chromatographic methods of analysis of antibiotics in milk
TL;DR: Recent developments in the chromatographic determination of antibiotic residues in milk are reviewed to determine the identity and quantity of antibiotic present.
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Comparison of solid-phase extraction sorbents for cleanup in pesticide residue analysis of fresh fruits and vegetables
TL;DR: In this article, the US Food and Drug Administration (US FDA) and Canadian Pest Management Regulatory Agency (ACetonitrile extraction) methods for pesticides were subjected to cleanup with solid phase extraction (SPE) columns.
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Multiresidue Pesticide Analysis in Fresh Produce by Capillary Gas Chromatography−Mass Spectrometry/Selective Ion Monitoring (GC-MS/SIM) and −Tandem Mass Spectrometry (GC-MS/MS)†
Jon W. Wong,Kai Zhang,Katherine Tech,Douglas G. Hayward,Carolyn M. Makovi,Alexander J. Krynitsky,Frank J Schenck,Kaushik Banerjee,Soma Dasgupta,Don Brown +9 more
TL;DR: The method, based on concepts from the multiresidue procedure used by the Canadian Food Inspection Agency and QuEChERS, was shown to be efficient in screening, identifying, and quantitating pesticides in fresh produce samples.