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dc.contributor.authorChatsantiprapa, Preecha
dc.date.accessioned2021-03-30T20:51:00Z
dc.date.available2021-03-30T20:51:00Z
dc.date.issued1992
dc.identifier.urihttps://hdl.handle.net/10182/13645
dc.description.abstractThe extraction process is an important step in determination of pesticide residues in that substances which are not extracted are not measured. In this study, the efficiency of recovery of DDT residues in soil of two extraction methods, tumble and ultrasonic methods, were studied and compared, together with three different soil moisture levels. It was found that the ultrasonic method was better because it was easy, fast and used less solvent but gave equal recovery to the tumble method. Soil moisture levels were also found to have an important influence on the efficiency of extraction. In this experiment, the field moist soil gave the best recovery and dried soil the lowest while the rewetted soil gave moderate recovery.en
dc.format.extentiv, 36 pages
dc.language.isoen
dc.publisherLincoln University
dc.rights.urihttps://researcharchive.lincoln.ac.nz/page/rights
dc.subjectsoilen
dc.subjectsoil moistureen
dc.subjectpesticidesen
dc.subjectextraction methoden
dc.subjecttumble methoden
dc.subjectultrasound methoden
dc.titleComparison of extraction methods for DDT residue detection in soil : A dissertation submitted in partial fulfilment of the requirements for the degree of Diploma of Applied Science in Lincoln Universityen
dc.typeDissertationen
thesis.degree.grantorLincoln Universityen
thesis.degree.levelDiplomaen
thesis.degree.nameDiploma of Applied Scienceen
lu.thesis.supervisorWaller, John
lu.contributor.unitDepartment of Soil and Physical Sciences
dc.rights.accessRightsDigital thesis can be viewed by current staff and students of Lincoln University only. If you are the author of this item, please contact us if you wish to discuss making the full text publicly available.en
dc.subject.anzsrc0503 Soil Sciencesen
dc.subject.anzsrc05 Environmental Sciencesen


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