Degradation of parathion methyl on field-sprayed apples and stored apples

dc.contributor.author	Pappas, CJ	en
dc.contributor.author	Kyriakidis, NB	en
dc.contributor.author	Athanasopoulos, PE	en
dc.date.accessioned	2014-06-06T06:43:56Z
dc.date.available	2014-06-06T06:43:56Z
dc.date.issued	1999	en
dc.identifier.issn	10603271	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/1561
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0033090510&partnerID=40&md5=6e1249dc7c5c7ca3d8252de845675f8f	en
dc.subject.other	insecticide	en
dc.subject.other	parathion methyl	en
dc.subject.other	pesticide residue	en
dc.subject.other	angiosperm	en
dc.subject.other	article	en
dc.subject.other	chemistry	en
dc.subject.other	cold	en
dc.subject.other	food preservation	en
dc.subject.other	gas chromatography	en
dc.subject.other	half life time	en
dc.subject.other	kinetics	en
dc.subject.other	methodology	en
dc.subject.other	temperature	en
dc.subject.other	time	en
dc.subject.other	Chromatography, Gas	en
dc.subject.other	Cold	en
dc.subject.other	Food Preservation	en
dc.subject.other	Half-Life	en
dc.subject.other	Insecticides	en
dc.subject.other	Kinetics	en
dc.subject.other	Methyl Parathion	en
dc.subject.other	Pesticide Residues	en
dc.subject.other	Rosales	en
dc.subject.other	Temperature	en
dc.subject.other	Time Factors	en
dc.title	Degradation of parathion methyl on field-sprayed apples and stored apples	en
heal.type	journalArticle	en
heal.publicationDate	1999	en
heal.abstract	Residue levels of parathion methyl on field-sprayed Granny-Smith apples were studied. The pesticide was applied according to producer recommendations. Apples received a single spraying at a rate of 40 g active ingredient/100 L. Residues were determined with a simple gas chromatographic method. Recovery of parathion methyl was 88-108%, and the limit of determination was 0.002 mg/kg. Decomposition of parathion methyl was studied in apples remaining on trees after spraying and in apples harvested and stored under ambient-temperature, refrigerated-room, and controlled-atmosphere conditions. During post harvest storage, parathion methyl degrades more slowly than on apples remaining on the trees. Best-fit curves were determined, and kinetic equations, rate constants, and half-lives were calculated. Half-lives found were 8 days for apples on trees, 45 days for apples stored at ambient conditions, 68 days for apples stored in controlled-atmosphere room, and 62 days for apples stored in a refrigerated room. Under storage conditions, levels of parathion methyl residues need a long time to become lower than the legal limit (0.2 mg/kg).	en
heal.journalName	Journal of AOAC International	en
dc.identifier.issue	2	en
dc.identifier.volume	82	en
dc.identifier.spage	359	en
dc.identifier.epage	363	en