Biomaterial Database

Quantitative determination of carbaryl in apples, lettuce, and water by densitometry of thin layer chromatograms. 1978

J Sherma, and A J Kovalchick, and R Mack

A method for the quantitative determination of carbaryl insecticide by in situ densitometry was developed. After separation on silica gel thin layer plates, carbaryl residues were detected by using p-nitrobenzenediazonium fluoborate reagent and quantitated by scanning the resultant blue spots with a fiber optics densitometer and comparing them with standards. The method was applied to water fortified with carbaryl at 8 ppb and apples and lettuce fortified at 0.10 ppm; all recoveries were greater than 89%. The 2 crop extracts were cleaned up by using the AOAC thin layer chromatographic method for visual estimation of carbaryl. Related carbamate insecticides were detected by using the same reagent, and the potential for quantitation was demonstrated.

UI	MeSH Term	Description	Entries
D010573	Pesticide Residues	Pesticides or their breakdown products remaining in the environment following their normal use or accidental contamination.	Pesticide Residue,Residue, Pesticide,Residues, Pesticide
D002855	Chromatography, Thin Layer	Chromatography on thin layers of adsorbents rather than in columns. The adsorbent can be alumina, silica gel, silicates, charcoals, or cellulose. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Chromatography, Thin-Layer,Thin Layer Chromatography,Chromatographies, Thin Layer,Chromatographies, Thin-Layer,Thin Layer Chromatographies,Thin-Layer Chromatographies,Thin-Layer Chromatography
D003720	Densitometry	The measurement of the density of a material by measuring the amount of light or radiation passing through (or absorbed by) the material.	Densitometries
D005638	Fruit	The fleshy or dry ripened ovary of a plant, enclosing the seed or seeds.	Berries,Legume Pod,Plant Aril,Plant Capsule,Aril, Plant,Arils, Plant,Berry,Capsule, Plant,Capsules, Plant,Fruits,Legume Pods,Plant Arils,Plant Capsules,Pod, Legume,Pods, Legume
D012721	Carbaryl	A carbamate insecticide and parasiticide. It is a potent anticholinesterase agent belonging to the carbamate group of reversible cholinesterase inhibitors. It has a particularly low toxicity from dermal absorption and is used for control of head lice in some countries.	1-Naphthyl-N-methylcarbamate,Antigale,Carbaril,Carbaryl, Manganese (2+) Salt,Carbaryl, Nickel (2+) Salt,Carbyl,Carylderm,Concentrat VO 18,Dog-Net Insecticide Poudre,Fido's Free-Itch,G-Wizz,Joseph Lyddy,Océcoxil,Poudre insecticide Moureau,Poudre insecticide Vetoquinol,Poutic,Sevin,Skatta Tick Flea Louse Powder,Sépou,Tigal,Dog Net Insecticide Poudre,DogNet Insecticide Poudre,Fido's Free Itch,Fido's FreeItch,G Wizz,GWizz,Lyddy, Joseph,Moureau, Poudre insecticide,VO 18, Concentrat,Vetoquinol, Poudre insecticide,insecticide Moureau, Poudre,insecticide Vetoquinol, Poudre
D014675	Vegetables	A food group comprised of EDIBLE PLANTS or their parts.	Vegetable
D014874	Water Pollutants, Chemical	Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water.	Chemical Water Pollutants,Landfill Leachate,Leachate, Landfill,Pollutants, Chemical Water