منابع مشابه
Voltammetric Determination of Fenitrothion
The adsorptive stripping differential pulse voltammetric method was proposed for the determination of fenitrothion [O,O-dimethyl O-(4-nitro-m-tolyl)phosphorothioate]. The voltammetric response was evaluated in 0,04 mol l-1 Britton-Robinson buffer with respect to the accumulation time and potential, and concentration dependence. The relationship between peak current and fenitrothion concentratio...
متن کاملThe Toxicity of Fenitrothion and Permethrin
Fenitrothion: An organophosphorus insecticide, fenitrothion (O,O-dimethyl O-4-nitro-m-tolyl phosphorothioate; CAS No. 122-14-5), which is a yellow-brown liquid with an unpleasant odor at room temperature, was introduced in 1959 by both Sumitomo Chemical Company and Bayer Leverkusen, and later by American Cyanamid Company (Hayes, 1982; Hayes and Laws, 1990; Worthing and Walker, 1987). Organophos...
متن کاملMicrocapsule enabled multicatalyst system.
We present a new microencapsulated catalyst and report its use in a tandem multicatalyst reaction. Using an encapsulation technique, we developed an active, site-isolated amine catalyst that is capable of catalyzing the addition of nitromethane to an aldehyde. When a second Lewis acid catalyst is added, the nitroalkene intermediate is trapped and converted to the corresponding Michael adduct. W...
متن کاملFatigue crack propagation in microcapsule - toughened epoxy
The addition of liquid-filled urea-formaldehyde (UF) microcapsules to an epoxy matrix leads to significant reduction in fatigue crack growth rate and corresponding increase in fatigue life. Mode-I fatigue crack propagation is measured using a tapered doublecantilever beam (TDCB) specimen for a range of microcapsule concentrations and sizes: 0, 5, 10, and 20% by weight and 50, 180, and 460 lm di...
متن کاملSelectivity enhancement using permselective microcapsule
Multi-competitive enzymatic reactions were performed to determine the selectivity properties of enzymes immobilised in polyacrylamide-alginate (pAAm-Alg) microcapsules. The transesterification of fatty acid ethyl esters of different chain lengths (C2–C14) with various alcohols catalysed by the enzyme lipase Mucor Miehei was chosen as a test system. While the free enzyme exhibited higher selecti...
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ژورنال
عنوان ژورنال: Wood Preservation
سال: 1990
ISSN: 0287-9255,1884-0116
DOI: 10.5990/jwpa.16.17