Detail of "1646-75-9"

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Accumulation and metabolism of aldicarb by the free-living nematodes Aphelenchus avenae and Panagrellus redivivus

Accumulation and metabolism of aldicarb by the free-living nematodes Aphelenchus avenae and Panagrellus redivivus. Batterby, S.; Le Patourel, G. N. J.; Wright, D. J. (Field Stn., Imp. Coll., Ascot/Berkshire, Engl.). Ann. Appl. Biol., 86(1), 69-76 (English) 1977. CODEN: AABIAV. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemicals) A 24-h incubation of A. avenae and P. redivivus with aldicarb (I) [116-06-3] caused the max. sublethal response at 1.16 .times. 10-5 and 5.8 .times. 10-5M, resp. The toxicity of aldicarb sulfoxide (II) [1646-87-3] for the nematodes was similar to that of I, whereas aldicarb sulfone (III) [1646-88-4] was less toxic. The major metabolite of I, found in the nematodes and in the incubation medium, was II, followed by III and aldicarb oxime sulfoxide [7635-32-7]. Aldicarb oxime [1646-75-9] and aldicarb oxime sulfone [14357-44-9] were minor metabolites. The level of I and I metabolites in the nematodes was proportional to the initial I concn. in the medium. However, after 24-h incubation, the more susceptible A. avenae accumulated levels of toxic I metabolites 2-3-fold as high as those accumulated by the more resistant P. redivivus, which rapidly absorbed, metabolized, and eliminated I. A. avenae accumulated more I under anaerobic, than under aerobic, conditions.

Isocratic high-performance liquid chromatographic separation and multiple-wavelength ultraviolet detection of aldicarb and its soil degradation products

Isocratic high-performance liquid chromatographic separation and multiple-wavelength ultraviolet detection of aldicarb and its soil degradation products. Optimization of stationary phase selectivity. Lin, Li Ying; Cooper, William T. (Dep. Chem., Florida State Univ., Tallahassee, FL 32306-3006, USA). J. Chromatogr., 390(2), 285-95 (English) 1987. CODEN: JOCRAM. ISSN: 0021-9673. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Section cross-reference(s): 61, 80 The unique selectivities which can be generated through optimization of stationary/mobile phase combinations have been applied to the development of an isocratic, reversed-phase HPLC for the sepn. of aldicarb [116-06-3] and its primary soil degrdn. products aldicarb sulfoxide oxime [7635-32-7], aldicarb sulfoxide [1646-87-3], aldicarb sulfone [1646-88-4], and aldicarb oxime [1646-75-9]. The method utilizes a cyanopropyl bonded stationary phase and water-acetonitrile mobile phase and is capable of sepg. aldicarb and its various sulfoxide, sulfone and oxime derivs. in <10 min. When combined with multiple-wavelength UV (254 nm) detection and an appropriate preconcn. step, this method can in principle be applied to the routine monitoring of aldicarb and its soil derivs. in water at concns. 7732-18-5 and 1646-88-4 are just another two chemicals used in this study. <1 mg/L. .