Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/57367
Citations
Scopus Web of Science® Altmetric
?
?
Full metadata record
DC FieldValueLanguage
dc.contributor.authorYing, G.en
dc.contributor.authorKookana, R.en
dc.date.issued2006en
dc.identifier.citationEnvironmental Toxicology and Chemistry, 2006; 25(8):2045-2050en
dc.identifier.issn0730-7268en
dc.identifier.issn1552-8618en
dc.identifier.urihttp://hdl.handle.net/2440/57367-
dc.descriptionCopyright © 2006 SETACen
dc.description.abstractTo have an effective barrier against invading termites around building structures and to assess the potential risks to the urban environment and human beings, we need to understand the fate of termiticides applied in urban soil. The movement and degradation of a new termiticide, fipronil, were investigated in Australian soils following standard termiticide treatment methods (surface application under slab and trenching treatments along walls). Surface application studies in three field sites showed slow dissipation and little movement for fipronil in all three soils under the simulated slab during a three-year period. The greatest mass of the chemical residues remained in the quartzite sand layer (thickness, 5 cm), and only small amounts of these were found to have migrated into the soil layers (depth, 0-15 cm) underneath the quartzite sand layer. Of the three metabolites (desulfinyl, sulfide, and sulfone) found in the soils, the sulfone derivative had the highest concentration. Persistence of fipronil was affected by application rate. The time for 50% loss of the total toxic components (fipronil plus its metabolites) in the quartzite sand layer (thickness, 5 cm) ranged from 200 to 326 d for the low rate (0.15 g active ingredient/m2) and from 633 to 674 d for the high application rate (3 g active ingredient/m2). One-year trenching studies at two sites in Adelaide (Roseworthy Farm [RF] and Terretfield [TF]; South Australia, Australia) showed that vertical movement and dissipation of fipronil occurred in the soils. The average concentration of fipronil in the trenches (depth, 0-30 cm) decreased from 33.7 to 14.9 mg/kg in the loam soil at the RF site and from 39.4 to 14.6 mg/kg in the clay soil at the TF site over the year. With time under the natural weather condition, fipronil and its derivatives were found in the deeper soil sections without treatment (depth, 20-30 cm). However, laboratory studies using repacked soil columns showed low mobility in the loam soil from the RF site and a variably charged clay soil from Malanda (Queensland, Australia) under intermittent wetting and drying conditions.en
dc.description.statementofresponsibilityGuang-Guo Ying and Rai S. Kookanaen
dc.language.isoenen
dc.publisherSetacen
dc.subjectFipronil; Termiticide; Soil; Degradation; Mobilityen
dc.titlePersistence and movement of fipronil termiticide with under-slab and trenching treatmentsen
dc.typeJournal articleen
dc.identifier.doi10.1897/05-652R.1en
pubs.publication-statusPublisheden
dc.identifier.orcidKookana, R. [0000-0002-0477-3284]en
Appears in Collections:Earth and Environmental Sciences publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.