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pro vyhledávání: '"Vipin K. Agarwal"'
Autor:
Vipin K. Agarwal
Publikováno v:
Journal of Liquid Chromatography. 16:3793-3799
A High Performance Liquid Chromatographic (HPLC) method for the analysis of Sulfadiazine, Sulfathiazole, Sulfapyridine, Sulfamerazine, Sulfamethiazole, Sulfamethazine, Sulfachloropyridazine, Sulfadimethoxine, and Sulfaquinoxaline is described. Milk (
Autor:
Vipin K. Agarwal
Publikováno v:
Journal of Liquid Chromatography. 14:2601-2608
A High performance liquid chromatographic (HPLC) method for the quantitative analysis of emetine in corn is described. Corn kernels are removed from the ears, blended, and extracted with methanol. The extract is filtered through a 0.45 um Acrodisc fi
Autor:
Vipin K. Agarwal
Publikováno v:
Journal of Liquid Chromatography. 14:699-707
The use of cyclobond-I solid phase extraction (SPE) cartridges in the analysis of sulfonamides was investigated. an aqueous solution of sulfonamides in 0.1 M potassium phosphate buffer (pH 4.0) was passed through the SPE cartridge. the sulfonamides w
Autor:
Vipin K. Agarwal
Publikováno v:
Journal of Liquid Chromatography. 13:3531-3539
A simple high performance liquid chromatographic (HPLC) procedure for the detection of sulfamethazine residues in milk is described. Milk is extracted with chloroform, the extract evaporated to dryness and then redissolved in potassium phosphate buff
Autor:
Vipin K. Agarwal
Publikováno v:
Journal of Liquid Chromatography. 13:2475-2487
A high performance liquid chromatographic (HPLC) method for the determination of neomycin in milk is described. Milk is passed directly through an amberlite CG-50 ion exchange resin column, and the neomycin which is retained on the column is derivati
Autor:
Vipin K. Agarwal
Publikováno v:
Journal of AOAC INTERNATIONAL. 75:812-814
A liquid chromatographic (LC) method has been developed for the determination of vitamin D (D2 + D3) in animal feeds and premixes. The sample is saponified with potassium hydroxide, and vitamin D is extracted with hexane and isomerized to isotachyste
Autor:
Vipin K. Agarwal
Publikováno v:
Journal of chromatography. 624(1-2)
In the last decade, significant research has been done to improve the existing high-performance liquid chromatographic (HPLC) methods and also towards developing simple, reliable and sensitive HPLC methods for sulfonamides in meat, milk and eggs. The
Publikováno v:
Journal of Food Protection. 55:220-221
Pesticides not allowed for use in the United States may be applied in foreign countries on grapes destined for wine production. There is concern that imported wine may contain residues of these pesticides. Of 51 wines tested from five foreign countri
Autor:
Vipin K. Agarwal
Publikováno v:
Journal of Steroid Biochemistry. 35:149-150
A new procedure for the isomerization of vitamin D and its metabolites is described. Vitamin D or its metabolites are dissolved in 100 microliters methanol and 10 M HC1 in 2-butanol is used as the reagent for isomerization. The isomerization reaction
Autor:
Vipin K. Agarwal
Publikováno v:
Journal of AOAC INTERNATIONAL. 71:19-22
A method for the determination of vitamins D2 + D3 in fortified milk is described. Vitamins D2 and D3 are extracted from the saponified sample and converted to isotachysterols with antimony trichloride. The isotachysterols are quantitated using liqui