Analysis of triallate residues in cereals and soil by gas chromatography with ion-trap detection.
Triallate residues in barley seedlings and soil samples were determined by gas chromatography with ion-trap detection. Soil was extracted with methanol on a mechanical shaker, and plants were extracted with acetonitrile in a Sorvall homogenizer. After evaporation of the organic solvents, the residue was dissolved in hexane, and plants extracts were cleaned-up on an alumina column. Gas chromatographic analysis was carried out using a BP-1 fused-silica capillary column with helium as carrier gas. To quantitate residues the total-ion chromatogram was obtained and then the selected-ion monitoring chromatograms were displayed at m/z 86 for triallate and at m/z 154 for the internal standard, methyl-(4-amino-2-chloro)-benzoate. The average recovery through the method from barley and soil samples was always higher than 80%. The limit of detection in the selected-ion mode was 0.01 mg/kg. Barley and soil samples treated with triallate were also analysed. A good agreement was observed between results obtained by this method and by gas chromatography with nitrogen-phosphorus detection.
Triallate Accumulation in Wild Oat and Barley
Analysis of entire barley (Hordeum vulgare ‘Moravian’) seedlings exposed to triallate [S-(2,3,3-trichloroallyl)-diisopropylthiocarbamate] vapor for 5 days after a 5-day germination period resulted in a linear rate of accumulation of triallate, while wild oat (Avena fatua L.) seedlings accumulated triallate for 1/2 to 2 days after exposure with no net accumulation thereafter. Similar accumulation patterns were shown for a similar exposure period when barley and wild oat were seeded 1.3 cm below a triallate-treated soil layer in the greenhouse. More triallate accumulated in wild oat and barley when they were planted in a triallate-treated soil layer than below. Since barley accumulated greater amounts of triallate without injury than wild oat, differential uptake of triallate was not the reason for selectivity.
Women's health in prison: urgent need for improvement in gender equity and social justice.
The needs of women held in detention have received little attention and con-tinue to be neglected by health systems and prison authorities. One reason for this, too readily accepted until now, is that women prisoners are a clear minor-ity group within prisons all over the world. It is only recently that attention has been drawn to the fact that a minor-ity status does not justify the widespread ignorance of women’s basic rights and the considerable gender insensitivity still dominating criminal justice systems.In Europe alone, there are about 100 000 women and girls in prison.