Abstract:This study aimed to improve the national standard method GB 5009.97—2016 National Food Safety Standards:Determination of Sodium Cyclamate in Food.During the process of sample pretreatment，n-heptane was added after weighing and measuring the constant volume of the samples.Then，sodium nitrite and vitriol were immediately mixed with the samples on the ice.Finally，sodium chloride was added.The cyclohexanol in the supernatant of the n-heptane extracting solution，which was representative of sodium cyclamate，was detected using gas chromatography.The detection limit was 0.008 g/kg，the correlation coefficient of the calibration curves was 0.999 6，and the average recovery rates were in the range of 94.0%-104.0%.Moreover，the relative standard deviations were in the range of 3.02%-4.75%.