Penetration of methyl bromide, sulfuryl fluoride, ethanedinitrile and phosphine into timber blocks and the sorption rate of the fumigants

Y. Ren; B. Lee; B. Padovan

doi:10.1016/j.jspr.2010.04.006

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Penetration of methyl bromide, sulfuryl fluoride, ethanedinitrile and phosphine into timber blocks and the sorption rate of the fumigants

Journal article

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Penetration of methyl bromide, sulfuryl fluoride, ethanedinitrile and phosphine into timber blocks and the sorption rate of the fumigants

Y. Ren, B. Lee and B. Padovan

Journal of Stored Products Research, Vol.47(2), pp.63-68

2011

DOI: https://doi.org/10.1016/j.jspr.2010.04.006

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Abstract

To evaluate timber fumigants alternative to the ozone-depleting methyl bromide (MB), pinewood (Oregon, Pseudotsuga menziesii) blocks (10 cm × 10 cm × 30 cm) were fumigated in a stainless steel chamber (30.0 L). The timber blocks were fumigated at 48 mg L-1 of MB, sulfuryl fluoride (SF) and ethanedinitrile (C2N2) and 1 mg L-1 of phosphine (PH3) for 48 h. During fumigation, 70% MB, 35% SF, 63% C2N2 and 25% PH3 were absorbed by the timber block. At 6-h exposure, the concentrations of SF, PH3 and C2N2 in the headspace of the chamber were stable. Each fumigant penetrated to all parts of the block, but the speed and extent of penetration were different. The fumigants that most rapidly achieved an even concentration throughout the block and chamber were PH3 and C2N2. The maximum variation of MB, SF, C2N2 and PH3 concentration between the chamber and gas port (15 cm) was 81.3, 11.8, 1.5 and 9.3% at 24-h exposure and 76.8, 9.3, 0.5 and 1.1% at 48-h exposure respectively. Possible alternative fumigants to MB need to penetrate timber at least as well as MB; SF, PH3 and C2N2 met this criterion.

Details

Title: Penetration of methyl bromide, sulfuryl fluoride, ethanedinitrile and phosphine into timber blocks and the sorption rate of the fumigants
Authors/Creators: Y. Ren (Author/Creator) - ACT
B. Lee (Author/Creator)
B. Padovan (Author/Creator) - Commonwealth Scientific and Industrial Research Organisation
Publication Details: Journal of Stored Products Research, Vol.47(2), pp.63-68
Publisher: Elsevier BV
Identifiers: 991005540002007891
Copyright: 2011 Elsevier
Murdoch Affiliation: School of Biological Sciences and Biotechnology
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.32 Entomology; 3.32.1138 Botanical Insecticides
Web Of Science research areas: Entomology
ESI research areas: Plant & Animal Science