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Titolo:
Determination of spinosad and its metabolites in food and environmental matrices. 2. Liquid chomatography-mass spectrometry
Autore:
Schwedler, DA; Thomas, AD; Yeh, LT;
Indirizzi:
Dow AgroSci LLC, Indianapolis Lab, Global Environm Chem Lab, Indianapolis,IN 46268 USA Dow AgroSci LLC Indianapolis IN USA 46268 Lab, Indianapolis,IN 46268 USA
Titolo Testata:
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
fascicolo: 11, volume: 48, anno: 2000,
pagine: 5138 - 5145
SICI:
0021-8561(200011)48:11<5138:DOSAIM>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONTROL AGENT SPINOSAD; ULTRAVIOLET DETECTION; CHROMATOGRAPHY;
Keywords:
spinosad; spinosyn A; spinosyn D; spinosyn B; spinosyn K; N-demethylspinosyn D; residues; alfalfa; wheat; sorghum; corn; LC-MS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Schwedler, DA Dow AgroSci LLC, Indianapolis Lab, Global Environm Chem Lab,9330 Zionsville Rd, Indianapolis, IN 46268 USA Dow AgroSci LLC 9330 Zionsville Rd Indianapolis IN USA 46268
Citazione:
D.A. Schwedler et al., "Determination of spinosad and its metabolites in food and environmental matrices. 2. Liquid chomatography-mass spectrometry", J AGR FOOD, 48(11), 2000, pp. 5138-5145

Abstract

A selective and sensitive method utilizing liquid chromatography-mass spectrometry (LC-MS) has been developed for determining residues of the naturalinsect control agent spinosad in several crop matrices that are difficult to analyze by HPLC with UV detection. The method determines the active ingredients (spinosyns A and D) and three minor metabolites (spinosyns B and K and N-demethylspinosyn D) in alfalfa:hay, wheat hay, wheat straw, sorghum fodder, and corn stover. The analytes are extracted from the samples with anacetonitrile/water solution, and the extracts are purified by solid phase extraction with a C-18 disk and a silica cartridge. All five analytes are determined simultaneously in a single injection using positive atmospheric pressure chemical ionization LC-MS with selected ion monitoring. The averagerecoveries ranged from 69 to 96% with standard deviations ranging from 4 to 15%. The method has a validated limit of quantitation of 0.01 mug/g and alimit of detection of 0.003 mug/g. The LC-MS method can also provide residue confirmation in addition to quantitation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/01/20 alle ore 15:25:13