Bromine Residuesin Wheat and Milled Wheat Fractions Fumigated with Methyl Bromide¹

Authors: LINDGREN, D. L.; GUNTHER, F. A.; VINCENT, L. E.

Source: Journal of Economic Entomology, Volume 55, Number 5, October 1962 , pp. 773-776(4)

Publisher: Entomological Society of America

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Abstract:

Bromine residue in fumigated wheat and wheat products (bran, shorts, flour, and middlings) was analyzed as total organic and inorganic bromine by standard neutron activation analysis techniques including calculations of concentrations from resultant gamma-ray spectra. Very little or no loss of bromine occurred after aeration for 6 hours with either 9% or 15% moisture content wheat. A greater increase in the bromine residue occurred with an increase in the moisture content of the wheat or an increase in the fumigation temperature. Results indicate that fumigation at lower temperatures and higher dosages may result in lower bromine residues than fumigation at higher temperatures and lower dosages. The bromine residue found in wheat fumigated for 48 hours was more than eight times greater than for wheat fumigated for 48 hours. A second repeat fumigation following a first fumigation by 24 hours added 60% to 70% more bromine residue to the wheat. Regardless of whether the wheat is fumigated and then milled to obtain fractions or whether the fractions are fumigated after milling the amount of bromine residue found was in the following sequence: bran>shorts> flour>middlings.

Document Type: Research article

Publication date: 1962-10-01

More about this publication?

Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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