Publications by authors named "V Feigenbrugel"
Atmospheric fate of dichlorvos: photolysis and OH-initiated oxidation studies.
Environ Sci Technol
February 2006
The OH-initiated oxidation of dichlorvos (a widely used insecticide) has been investigated under atmospheric conditions at the large outdoor European photoreactor (EUPHORE) in Valencia, Spain. The rate constant of OH reaction with dichlorvos, k, was measured by using a conventional relative rate technique where 1,3,5-trimethylbenzene (TMB) and cyclohexane were taken as references. With the use of the rate constants of 5.
View Article and Find Full Text PDFMolar absorptivities of 2,4-D, cymoxanil, fenpropidin, isoproturon and pyrimethanil in aqueous solution in the near-UV.
Spectrochim Acta A Mol Biomol Spectrosc
January 2006
Article Synopsis
- The absorption spectra of five pesticides (2,4-D, cymoxanil, fenpropidin, isoproturon, and pyrimethanil) were measured in aqueous solutions using a CCD detector, finding their molar absorptivity coefficients across a 240-344 nm wavelength range.
- Significant molar absorptivity values were obtained for each pesticide at 253.7 nm using a Hg-lamp, with 2,4-D at 145, cymoxanil at 7940, fenpropidin at 196, isoproturon at 7330, and pyrimethanil at 13200 (in M(-1) cm(-1)).
- The study concluded that under sunlight,
A dynamic system based on the water/air equilibrium at the interface within the length of a microporous tube has been used to determine experimentally the Henry's law constants (HLC) of two pesticides: metolachlor and diazinon. The measurements were conducted over the temperature range 283-301 K. At 293 K, HLCs values are (42.
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