Determination of chlorinated volatile organic compounds in polyamine epichlorohydrin solution by headspace gas chromatography.
This study demonstrated a headspace gas chromatographic (HS-GC) method for the determination of residual epichlorohydrin (ECH) and the by-product 1,3-dichloro-2-propanol (DCP) in polyamine epichlorohydrin (PAE) solution. It was based on the vapor-liquid phase equilibrium of these analytes at 60°C for 30min in a closed headspace sample vial before GC measurement. It was found that matrix of the PAE solution had the effect on the headspace equilibrium of these species and therefore a standard addition must be applied in the method validation. The results showed that the present method has a good measurement precision (RSD <2.90%) and accuracy (recoveries from 93.6 to 105%), and the limit of quantitation (LOQ) is 3.75mg/L for ECH and 0.8g/L for DCP. The present method is suitable to be used for analyzing the chlorinated volatile organic compounds in the commercial PAE resin solutions.
['Yan|Ning|N|', 'Wan|Xiao-Fang|XF|', 'Chai|Xin-Sheng|XS|', 'Chen|Run-Quan|RQ|']
D002849:Chromatography, Gas D004811:Epichlorohydrin D057230:Limit of Detection D011073:Polyamines D012996:Solutions D055549:Volatile Organic Compounds D000517:alpha-Chlorohydrin
Chlorinated volatile organic compounds Polyamine epichlorohydrin Headspace gas chromatography Wet-strength agent