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使用柱前衍生化对饮料中的环已基氨基磺酸钠进行处理,用含内标的正己烷萃取衍生化产物,以GC-FID测定其质量分数.结果表明:环已基氨基磺酸钠质量浓度在0.05~5.00 mg/mL范围内,与峰面积线性关系良好(r=0.9999);检出限(S/N=3∶1)为0.95 mg/kg,定量限(S/N=10∶1)为4.75 mg/kg;平均回收率为96.0%,RSD为2.3%.该方法重复性好,适合饮料中环已基氨基磺酸钠的检测.
The pre-column derivatization was used to treat the sodium cyclamate in the beverage, and the derivatized product was extracted with an internal standard n-hexane to determine its mass fraction by GC-FID.The results showed that the mass of sodium cyclamate The calibration curve was linear with the peak area (r = 0.9999). The detection limit (S / N = 3:1) was 0.95 mg / kg and the limit of quantification 1) was 4.75 mg / kg, the average recovery was 96.0% and the RSD was 2.3% .The method was reproducible and suitable for the determination of sodium cyclamate in beverages.