Search Results - "Podhorniak, Lynda"

A Rapid Miniaturized Residue Analytical Method for the Determination of Zoxamide and Its Two Acid Metabolites in Ginseng Roots Using UPLC-MS/MS by Podhorniak, Lynda V

“…A miniaturized residue method was developed for the analysis of the fungicide zoxamide and its metabolites in dried ginseng root. The zoxamide metabolites,…”
Get full text

The Use of Dispersive Pipet Extraction (DPX) Tips for the Sample Cleanup of Apples, Pears, and Oranges in the Analysis of Formetanate HCl by Podhorniak, Lynda V

“…The U.S. Environmental Protection Agency Analytical Chemistry Laboratory evaluated the effectiveness of dispersive pipet extraction (DPX) tip cleanup and…”
Get full text

Determination of Formetanate Hydrochloride in Fruit Samples Using Liquid Chromatography−Mass Selective Detection or −Tandem Mass Spectrometry by Podhorniak, Lynda V, Kamel, Alaa, Rains, Diane M

“…A rapid multiresidue method that captures residues of the insecticide formetanate hydrochloride (FHCl) in selected fruits is described. The method was used to…”
Get full text

Rapid Multiresidue Method for Determination of Pesticides in Fruits and Vegetables by Using Acetonitrile Extraction/Partitioning and Solid-Phase Extraction Column Cleanup by Schenck, F.J, Brown, A.N, Podhorniak, L.V, Parker, A, Reliford, M, Wong, J.W

“…A modification of a rapid and inexpensive multiresidue method for determination of pesticides in fruits and vegetables (QuEChERS method) is presented. Samples…”
Get full text

Gestational atrazine exposure: Effects on male reproductive development and metabolite distribution in the dam, fetus, and neonate by Fraites, Melanie J.P., Narotsky, Michael G., Best, Deborah S., Stoker, Tammy E., Davis, Lori K., Goldman, Jerome M., Hotchkiss, Michelle G., Klinefelter, Gary R., Kamel, Alaa, Qian, Yaorong, Podhorniak, Lynda, Cooper, Ralph L.

“…Few studies have investigated the long-term effects of atrazine (ATR) following in utero exposure. We evaluated the effects of gestational exposure of Sprague…”
Get full text

Gas chromatography with pulsed flame photometric detection multiresidue method for organophosphate pesticide and metabolite residues at the parts-per-billion level in representative commodities of fruit and vegetable crop groups by PODHORNIAK, Lynda V, NEGRON, Juan F, GRIFFITH, Francis D

“…A gas chromatographic method with a pulsed flame photometric detector (P–FPD) is presented for the analysis of 28 parent organophosphate (OP) pesticides and…”
Get full text

Liquid chromatographic determination of N-methyl carbamate pesticide residues at low parts-per-billion levels in eggs by Schenck, F.J, Podhorniak, L.V, Hobbs, J, Casanova, J, Donoghue, D

“…A reversed-phase liquid chromatographic (LC) method is presented for the analysis of N-methyl carbamate pesticide residues and piperonyl butoxide in eggs at…”
Get full text

The use of dispersive pipet extraction (DPX) tips for the sample cleanup of apples, pears, and oranges in the analysis of formetanate HCI by Podhorniak, Lynda V

“…The U.S. Environmental Protection Agency Analytical Chemistry Laboratory evaluated the effectiveness of dispersive pipet extraction (DPX) tip cleanup and…”
Get full text

Multiresidue method for N-methyl carbamates and metabolite pesticide residues at the parts-per-billion level in selected representative commodities of fruit and vegetable crop groups by Podhorniak, L.V, Schenck, F.J, Krynitsky, A, Griffith, F. Jr

“…A reversed-phase liquid chromatographic method with both fluorescence and mass spectrometric detection is presented for the determination of 13 parent N-methyl…”
Get full text

Program Introduction for the 48th Annual Florida Pesticide Residue Workshop by Kamel, Alaa, Podhorniak, Lynda, Wylie, Philip

Get full text

Determination of organochlorine pesticide and polychlorinated biphenyl residues in fatty fish by tandem solid-phase extraction cleanup by Schenck, F.J. (U.S. Food and Drug Administration, Baltimore, MD.), Calderon, L, Podhorniak, L.V

“…A rapid, multiresidue solid-phase extraction (SPE) technique for determination of organochlorine pesticide and polychlorinated biphenyl (PCB) residues in…”
Get full text

Comparison of Acute Neurobehavioral and Cholinesterase Inhibitory Effects of N-Methylcarbamates in Rat by McDaniel, Katherine L., Padilla, Stephanie, Marshall, Renée S., Phillips, Pamela M., Podhorniak, Lynda, Qian, Yaorong, Moser, Virginia C.

“…While the cholinesterase-inhibiting N-methyl carbamate pesticides have been widely used, there are few studies evaluating direct functional and biochemical…”
Get full text

Identification of incurred sulfonamide residues in eggs: methods for confirmation by liquid chromatography–tandem mass spectrometry and quantitation by liquid chromatography with ultraviolet detection by Heller, David N., Ngoh, Maureen A., Donoghue, Dan, Podhorniak, Lynda, Righter, Herbert, Thomas, Michael H.

“…Two complementary methods for identifying and measuring sulfonamide residues in eggs were developed for use in surveying eggs for potential drug residues. The…”
Get full text

Stability of tetracycline antibiotics in raw milk under laboratory storage conditions by Podhorniak, L V, Leake, S, Schenck, F J

“…Raw milk samples collected from bulk milk tankers may be screened for the presence of tetracycline antibiotics using rapid screening tests. If tetracycline…”
Get more information

A highly sensitive gas chromatographic determination of levamisole in milk by Schenck, F J, Podhorniak, L V, Wagner, R

“…An efficient extraction and sensitive gas chromatographic method is described for the determination of the anthelminthic drug levamisole in milk. Levamisole…”
Get more information