Zobrazeno 1 - 10
of 41
pro vyhledávání: '"James M. Desmarchelier"'
Publikováno v:
Journal of Agricultural and Food Chemistry. 48:3646-3650
14C-Labeled carbonyl sulfide (COS) was used to measure the amount of sorbed fumigant and alteration products on grains. Wheat, paddy rice, polished rice, mungbean, and safflower were exposed to a 60 mg L(-)(1) of (14)COS for 7 days and then aired for
Autor:
James M. Desmarchelier, Yonglin Ren
Publikováno v:
Journal of AOAC INTERNATIONAL. 82:1261-1280
This review concentrates on the main fumigants currently applied to commodities: phosphine (PH3) and methyl bromide (CH3Br). It discusses possible new fumigants, such as carbonyl sulfide (COS) and ethyl formate (EtF), that may be able to be applied i
Publikováno v:
Pesticide Science. 55:815-824
Ethyl formate and ethanol in air, eg in fumigant studies, were readily detected by gas chromatography (GC) (flame ionisation). Residues in wheat, barley and sultanas were analysed by GC, after extraction in polar solvents (eg methanol, aqueous propan
Publikováno v:
Journal of AOAC INTERNATIONAL. 81:638-644
Phosphine (PH3) residues on wheat were determined by gas chromatography (GC) in a blind experiment using 6 methods to assess whether results from different methods are comparable. For one method, 2 different chromatographic conditions also were used.
Autor:
Yonglin Ren, James M. Desmarchelier
Publikováno v:
Journal of AOAC INTERNATIONAL. 81:673-678
Multiresidue analysis of fumigants is important because of their widespread use on staple foodstuffs, such as grain. Fumigants are usually extracted from grain either by solvent extraction or by purgeand- trap techniques. In this paper, fumigant resi
Publikováno v:
Journal of Stored Products Research. 33:199-208
Methods to study movement of fumigant through timber were improved, and procedures were developed that obviated the need for sampling lines. Movement for two fumigants (methyl bromide and carbonyl sulphide) through, and sorption on, heartwood of soft
Autor:
James M. Desmarchelier, Eli Shaaya
Publikováno v:
Pesticide Science. 44:249-253
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 w
Publikováno v:
Journal of AOAC International. 95(2)
In headspace (HS) analysis, a fumigant is released from a commodity into a gas-tight container by grinding, heating, or microwaves. A new technique uses HS-solid-phase microextraction (SPME) for additional preconcentration of fumigant. HS-SPME was te
Autor:
James M. Desmarchelier, S.G. Wilson
Publikováno v:
Journal of Stored Products Research. 30:45-60
The rate of insect population growth in stored seed is strongly influenced by both the seed temperature and moisture content so both need to be taken into account when using aeration to control insect populations. This paper explains how to do this b
Publikováno v:
Journal of Stored Products Research. 29:357-369
In order for grain handlers and traders to reliably estimate residues of grain protectants in the field, antibody-based tests were developed for the organophosphorus pesticides, fenitrothion and pirimiphos-methyl. To complement the rapid analysis, ra