[Determination of residual epichlorohydrin and sym-dichloroisopropyl alcohol in cationic etherified reagent by gas chromatography].
A method for the determination of the residual epichlorohydrin and sym-dichloroisopropyl alcohol in cationic etherified reagent by gas chromatography has been established. Methyl benzoate, which has high extraction efficiency for the two components, was used as extractant. With an HP-5 capillary column, the two components were baseline separated and they eluted before the extractant. The linear ranges achieved were 5 - 590 mg/kg for epichlorohydrin and 21 - 480 mg/kg for sym-dichloroisopropyl alcohol. The limits of detection were 1.2 mg/kg for epichlorohydrin and 2.2 mg/kg for sym-dichloroisopropyl alcohol. Recoveries for epichlorohydrin were 95.93% - 103.42% with relative standard deviations of 2.4% - 10.6% and those for sym-dichloroisopropyl alcohol were 98.54% - 107.40% with relative standard deviations of 6.6% -11.1%. The method is simple, fast, and convenient.
Zhou
Weiyi
W
Analysis Centre of Tianjin University, Tianjin 300072, China. zhou_nmr@yahoo.com.cn
Fan
Guoliang
G
Jiang
Dongfeng
D
D002412:Cations / Q000737:chemistry; D002849:Chromatography, Gas; D004811:Epichlorohydrin / Q000032:analysis*; D000517:alpha-Chlorohydrin / Q000031:analogs & derivatives* / Q000032:analysis
D002412:Cations; D004811:Epichlorohydrin; C033489:1,3-dichloro-2-propanol; D000517:alpha-Chlorohydrin