Results 181 to 190 of about 8,389 (210)
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Conversion rates of aldicarb and its oxidation products in soils. II. Aldicarb sulphoxide
Pesticide Science, 1978AbstractThe loss of aldicarb sulphoxide was studied in incubation experiments with soil from four plough layers and two deeper layers. The loss during the 111 days of the experiment could be described by first‐order kinetics. The half‐lives at 15°C ranged from 20 days in a clay loam to 46 days in a peaty sand.
Johan H. Smelt +3 more
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Conversion rates of aldicarb and its oxidation products in soils. III. Aldicarb
Pesticide Science, 1978AbstractAldicarb was incubated in seven soils at 15°C and its loss was well described by first‐order kinetics. Rate constants varied between 0.078 day−1 in a peaty sand to 0.35 day−1 in a clay loam. The concentration‐time relationships for aldicarb, its sulphoxide and its sulphone were approximated by a computation model which was used to analyse the ...
Johan H. Smelt +3 more
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JAMA: The Journal of the American Medical Association, 1986
In Reply.— Drs Witt and Wagner express concern that our report suggests that aldicarb-related illness could result from food residues below the level of laboratory detection. Their arguments are based on a small study of corporate executives and on experimental data.
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In Reply.— Drs Witt and Wagner express concern that our report suggests that aldicarb-related illness could result from food residues below the level of laboratory detection. Their arguments are based on a small study of corporate executives and on experimental data.
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Aldicarb toxicosis in a dairy herd
Journal of the American Veterinary Medical Association, 1991Aldicarb, an extremely toxic carbamate, caused sudden death of several lactating Holstein cows. Confirmation of this toxic agent as the cause of death was hindered by its rapid breakdown in biological tissue. Therefore, aldicarb was not detected in rumen contents of some of the dead cows, and brain acetylcholinesterase values were essentially normal ...
L A, Kerr +4 more
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Journal of Chromatography A, 1979
Abstract A method is described for the determination of individual components of toxic aldicarb residues (aldicarb sulfoxide and aldicarb sulfone) in water and soils using a gas chromatographic method with the Hall electrolytic conductivity detector. Aldicarb and its metabolites were extracted from water by chloroform and from soils by water–acetone
M. Galoux +3 more
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Abstract A method is described for the determination of individual components of toxic aldicarb residues (aldicarb sulfoxide and aldicarb sulfone) in water and soils using a gas chromatographic method with the Hall electrolytic conductivity detector. Aldicarb and its metabolites were extracted from water by chloroform and from soils by water–acetone
M. Galoux +3 more
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Journal of Chromatography A, 1994
A screening method for the determination of aldicarb (AS) and its sulfoxide (ASX) and sulfone (ASN) metabolites in tobacco at low ppm levels is described. Tobacco samples are extracted using methanol with the aid of sonication at ambient conditions. The extract is filtered and then injected into a high-performance liquid chromatograph equipped with a ...
S S, Yang, I, Smetena
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A screening method for the determination of aldicarb (AS) and its sulfoxide (ASX) and sulfone (ASN) metabolites in tobacco at low ppm levels is described. Tobacco samples are extracted using methanol with the aid of sonication at ambient conditions. The extract is filtered and then injected into a high-performance liquid chromatograph equipped with a ...
S S, Yang, I, Smetena
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Journal - Association of Official Analytical Chemists, 1981
An ion-suppression reverse phase high pressure liquid chromatographic method is described for the determination of aldicarb, aldicarb sulfoxide, and aldicarb sulfone in potatoes. Samples are extracted with methylene chloride and Na2SO4, evaporated to dryness, and cleaned up using Sep-Pak silica and Sep-Pak-C18 cartridges.
W P, Cochrane, M, Lanouette
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An ion-suppression reverse phase high pressure liquid chromatographic method is described for the determination of aldicarb, aldicarb sulfoxide, and aldicarb sulfone in potatoes. Samples are extracted with methylene chloride and Na2SO4, evaporated to dryness, and cleaned up using Sep-Pak silica and Sep-Pak-C18 cartridges.
W P, Cochrane, M, Lanouette
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Aldicarb (Sulfoxide and Sulfone)
1988Aldicarb (2-methyl-2-(methylthio) propanal O-[(methylamino) carbonyl] oxime) with the trade name Temik®, is an insecticide, nematicide, and acaricide. Estimated aldicarb production was 3.0 to 4.7 million lb (1.4 to 2.1 million kg)/yr during 1979 to 1981. It is applied both to the soil and directly to plants.
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Toxicity of aldicarb in young chicks
Neurotoxicology and Teratology, 1988Enzyme and locomotion changes due to carbamate treatment were investigated during and following oral administration of aldicarb (0.2 mg/kg body weight/day x 7) to six-day-old chicks. Brain acetylcholinesterase (AChE) and neurotoxic esterase (NTE) were measured at three times during the one week of treatment, and again on days 1, 3, 6, 10, 20, 30 and 40
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