title: [Gas chromatographic determination of camphor, menthol, methyl salicylate, thymol in JEIL COOL PAP].
abstract: The contents of camphor, menthol, methyl salicylate and thymol in JEIL COOL PAP were determined with gas chromatography by using a stainless steel column (2 m x 3 mm i.d.) packed with 15% DEGS, Chromosorb W (AW-DMCS) 80-100 mesh. Temperature programming was from 70 degrees C to 180 degrees C. The quantitative determination was performed with diphenyl as the internal standard. The internal standard method showed good linearity (r = 0.9995-0.9999). The average recoveries were 99.63% (camphor), 99.83% (menthol), 100.0% (methyl salicylate) and 100.4% (thymol).
authors.affiliation: Dalian Institute for Drug Control, Dalian 116021, China.
authors.forename: X P
authors.initials: XP
authors.lastname: Qian
authors.forename: Y Z
authors.initials: YZ
authors.lastname: Zhao
authors.forename: Z H
authors.initials: ZH
authors.lastname: Li
mesh_terms: D002164:Camphor / Q000032:analysis*; D004338:Drug Combinations; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D008610:Menthol / Q000032:analysis*; D012459:Salicylates / Q000032:analysis*; D013943:Thymol / Q000032:analysis*
chemical_list: D004338:Drug Combinations; D004365:Drugs, Chinese Herbal; D012459:Salicylates; D008610:Menthol; D013943:Thymol; D002164:Camphor; C033069:methyl salicylate