Fumigation of agricultural products. IX.—Sorption of fumigants at reduced pressures

✍ Scribed by A. B. P. Page; R. E. Blackith

• Publisher: John Wiley and Sons
• Year: 1954
• Tongue: English
• Weight: 351 KB
• Volume: 5
• Category: Article
• ISSN: 0022-5142
• DOI: 10.1002/jsfa.2740050805

✦ Synopsis

Abstract

The adoption of vacuum‐fumigation techniques alters the rate of penetration of fumigants into stored products. The sorption of fumigants by wheat and other seeds is known to depend on the concentration‐time product attained at the position from which the sample for analysis is taken, and on the shape of the curve representing the rise and fall of fumigant concentration at that position. Reports of laboratory investigations suggested that reduced pressure did not influence sorption. Trials on a pilot scale have suggested that some influence was exerted. This discrepancy can be eliminated by allowing for the influence of reduced pressures on the distribution of fumigants in space and time within the commodity during pilot‐scale trials. Reduced pressures, per se, do not modify sorption in the experiments analysed.