Han Me
2014
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Journal
Guangdong Agricultural Sciences
Abstract
A method has been constructed for the rapid determination of sec-butylamine residue in various fruits by means of the headspace gas chromatography based on the volatility of sec-butylamine in heated aqueous solution. Sec-butylamine in samples was extracted by water,and the obtained extracting solution was centrifuged. Then it was analyzed by using headspace sampler in gas chromatography with hydrogen flame ionization detector( FID),and was separated by a Rtx-17 capillary column( 30 m × 0. 25 mm,0. 25 μm). There was a linear relationship between the peak area and the mass concentration of sec-butylamine from 0. 01 to 2. 0 mg / L with the correlation coefficient of 0. 9996. The average recoveries of sec-butylamine in 6 kinds of fruits varied from 70. 22% to 115. 30%,the relative standard deviation was 1. 1% ~ 11. 9%,and the detection limit of the method was 0. 01 mg / kg. This method was simple,rapid and sensitive in application,could meet the requirements of sec-butylamine residue analysis,and could be used to determine the residual amount of the preservative sec-butylamine in some fruits.