Insecticide Residues, Residue Analysis of a Chlorinated Insecticide (Thiodan) by Combination of Gas Chromatography and infrared Spectrophotometry

Insecticide Analysis, Thermal Isomerization of Endrin and Its Behavior in Gas Chromatography

“…The chromatographic separation of components from a typical run is given in Table I; 83 grams of crude thermal product in 57 ml. of methylene chloride were put on 800 grams of alumina (Alcoa G-4-A) formed into a column 16 inches long and 21/3 inches in diameter.…”

Sprout Inhibitor Residues, Residue Determination of Naphthaleneacetic Acid and Its Methyl Ester in Potatoes by a Combination of Gas Chromatography and Ultraviolet Spectrophotometry

“…Russet Burbank potatoes, treated with about 11 and 20 times the recommended concentration of MENA (Experiments 1A and IB), showed little decline from the initial deposit in the first 7 days of storage at 50°F. and a relative humidity of 80%.…”

“…The only available sensitive assay for this compound was the biological test utilizing the hvponastic response of MENA on the first well developed leaves of youne; potato plants (7).…”

“…Recently, a method for the residue analysis of the insecticide Thiodan by a combination of gas-liquid chromatography and infrared spectrophotometry (7) was developed. An analogous technique has now been developed for trace determinations of NAA and its methyl ester in potatoes.…”

Insecticide Residues, Microdetermination of Thiodan Residues

“…of the chlorinated organics may be released in milk by these animals (7). Therefore, determinations of total organic chloride in butterfat yield the total chlorinated insecticide content of milk.…”