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dc.contributor.authorChowdhury, Imtiaz Faruk
dc.contributor.authorRohan, Maheswaran
dc.contributor.authorStodart, Benjamin J
dc.contributor.authorChen, Chengrong
dc.contributor.authorWu, Hanwen
dc.contributor.authorDoran, Gregory S
dc.date.accessioned2021-02-26T04:20:42Z
dc.date.available2021-02-26T04:20:42Z
dc.date.issued2021
dc.identifier.issn0269-7491
dc.identifier.doi10.1016/j.envpol.2021.116687
dc.identifier.urihttp://hdl.handle.net/10072/402652
dc.description.abstractDissipation kinetics of atrazine and trifluralin in a clay loam soil was investigated in a laboratory incubation experiment under different temperature and moisture conditions. The soil was spiked with diluted atrazine and trifluralin concentrations at 4.50 and 4.25 mg/kg soil, respectively, the moisture content adjusted to 40, 70, and 100% of field capacity (FC) and then incubated in three climatic chambers at 10, 20, and 30 °C. For each of the herbicides, soil samples were collected at 0, 7, 21, 42, 70, and 105 days and analysed by Gas Chromatography-Electron Capture Detector (GC-ECD). A stochastic gamma model was used to model the dissipation of herbicides from the clay loam soil by incorporating environmental factors as covariates to determine half-life and days to complete dissipation. Results showed that temperature played a greater role on atrazine persistence than soil moisture; while the interaction effect of temperature and moisture was significant on the persistence of trifluralin over time. Atrazine dissipated more rapidly at 30 °C compared to 10 and 20 °C, with a half-life of 7.50 days and 326.23 days to reach complete dissipation. Rapid loss of trifluralin was observed at 70% moisture content when incubated at 30 °C, with a half-life of 5.80 days and 182.01 days to complete dissipation. It was observed that the half-life of both herbicides tended to double with every 10 °C decreases of temperature over the range tested. The model indicated that both atrazine and trifluralin have the potential to persist in clay loam soil for several years at temperature ≤20 °C; which could potentially affect following crops in rotation.
dc.description.peerreviewedYes
dc.languageeng
dc.publisherElsevier BV
dc.relation.ispartofpagefrom116687
dc.relation.ispartofjournalEnvironmental Pollution
dc.relation.ispartofvolume276
dc.subject.fieldofresearchSoil sciences
dc.subject.fieldofresearchPollution and contamination
dc.subject.fieldofresearchChemical sciences
dc.subject.fieldofresearchcode4106
dc.subject.fieldofresearchcode4105
dc.subject.fieldofresearchcode34
dc.subject.keywordsComplete dissipation
dc.subject.keywordsHalf-life
dc.subject.keywordsPersistence
dc.subject.keywordsResidues
dc.titlePersistence of atrazine and trifluralin in a clay loam soil undergoing different temperature and moisture conditions
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationChowdhury, IF; Rohan, M; Stodart, BJ; Chen, C; Wu, H; Doran, GS, Persistence of atrazine and trifluralin in a clay loam soil undergoing different temperature and moisture conditions, Environmental Pollution, 2021, 276, pp. 116687
dcterms.dateAccepted2021-02-04
dc.date.updated2021-02-26T04:14:42Z
gro.hasfulltextNo Full Text
gro.griffith.authorChen, Chengrong


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