Co-Authors:
Shaaya, E., Department of Stored Products, Aro Volcani Centre, Bet-Dagan, 50250, Israel
Desmarchelier, J.M., CSIRO Division of Entomology, GPO Box 1700, Canberra, Australian Capital Territory, 2601, Australia
Abstract:
A series of isothiocyanates (R‐NCS, R, 1–6 carbon atoms) was applied in the vapour phase to wheat in sealed containers. The speed of sorption, as measured by the rate of loss from the intergranular air space, was inversely proportional to molecular weight; e.g. the time for 50% sorption of hexyl isothiocyanate was over 100 times longer than for the methyl analogue. Despite extensive sorption, most of the applied chemicals was recovered from the fumigated wheat seven days after dosing, indicating that sorption did not lead to extensive degradation. Purge and trap techniques proved suitable for recovery of low‐boiling, but not high‐boiling chemicals. Copyright © 1995 John Wiley & Sons, Ltd
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