A Study on the Environmental Degradation of Pesticides Azinphos Methyl and Parathion Methyl

dc.contributor.author	Athanasopoulos, PE	en
dc.contributor.author	Kyriakidis, NV	en
dc.contributor.author	Stavropoulos, P	en
dc.date.accessioned	2014-06-06T06:45:53Z
dc.date.available	2014-06-06T06:45:53Z
dc.date.issued	2004	en
dc.identifier.issn	03601234	en
dc.identifier.uri	http://dx.doi.org/10.1081/PFC-120030243	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/2694
dc.subject	Azinphos methyl	en
dc.subject	Insecticide degradation	en
dc.subject	Parathion methyl	en
dc.subject	Relative humidity	en
dc.subject	Temperature	en
dc.subject.other	Atmospheric humidity	en
dc.subject.other	Decomposition	en
dc.subject.other	Emulsification	en
dc.subject.other	Glass	en
dc.subject.other	Refrigeration	en
dc.subject.other	Weathering	en
dc.subject.other	Biological factors	en
dc.subject.other	Petri dishes	en
dc.subject.other	Pesticides	en
dc.subject.other	azinphos methyl	en
dc.subject.other	parathion methyl	en
dc.subject.other	pesticide	en
dc.subject.other	degradation	en
dc.subject.other	insecticide	en
dc.subject.other	temperature effect	en
dc.subject.other	article	en
dc.subject.other	calculation	en
dc.subject.other	correlation analysis	en
dc.subject.other	decomposition	en
dc.subject.other	degradation	en
dc.subject.other	emulsion	en
dc.subject.other	environment	en
dc.subject.other	half life time	en
dc.subject.other	humidity	en
dc.subject.other	temperature	en
dc.subject.other	Azinphosmethyl	en
dc.subject.other	Chromatography, Gas	en
dc.subject.other	Food Preservation	en
dc.subject.other	Half-Life	en
dc.subject.other	Humidity	en
dc.subject.other	Insecticides	en
dc.subject.other	Kinetics	en
dc.subject.other	Malus	en
dc.subject.other	Methyl Parathion	en
dc.subject.other	Pesticide Residues	en
dc.subject.other	Temperature	en
dc.title	A Study on the Environmental Degradation of Pesticides Azinphos Methyl and Parathion Methyl	en
heal.type	journalArticle	en
heal.identifier.primary	10.1081/PFC-120030243	en
heal.publicationDate	2004	en
heal.abstract	The effect of environmental parameters (temperature and relative humidity) on the degradation rate of azinphos methyl and parathion methyl was studied. Proprietary emulsifiable concentrates were diluted and added to each of 90 glass Petri dishes for each pesticide and were left overnight to dry. Petri dishes were placed in 18 air-tight containers (9 for each pesticide) in which were created environments with relative humidity (RH) of 60, 82, and 96%. The containers were stored at 0, 20, and 40°C. From the experimental results best fit curves, kinetic equations, rate constants, and half-lives were calculated. Half-lives of azinphos methyl for the RH studied were, from 124 to 267 days at 0°C, from 89 to 231 days at 20°C, and from 25 to 71 days at 40°C. Corresponding half-lives for parathion methyl were from 48 to 57 days at 0°C, from 9.2 to 10.5 days at 20°C and from 1.3 to 1.5 days at 40°C. The results were correlated with relevant results from the decomposition of the same or similar pesticides on apples both, on the trees and during refrigerated storage. These correlations are suggesting that biological factors strongly affected the decomposition rate of azinphos methyl. On the contrary the decomposition of parathion methyl was mainly affected by environmental rather than biological factors.	en
heal.journalName	Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes	en
dc.identifier.issue	2	en
dc.identifier.volume	39	en
dc.identifier.doi	10.1081/PFC-120030243	en
dc.identifier.spage	297	en
dc.identifier.epage	309	en