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建立了离子色谱-脉冲安培法测定果汁饮品中三氯蔗糖的方法。果汁饮品经处理后其三氯蔗糖含量以CarboPacPA1高效阴离子交换柱为分析柱,氢氧化钠为淋洗液,梯度洗脱,脉冲安培检测器(PAD)检测,以保留时间定性,外标法定量。结果表明:三氯蔗糖在CarboPacPA1上可以在20min内完成分离,且均具有较宽的线性范围(50～5000mg/L)。样品测定的平均回收率为100.26%,精密度测试结果的RSD为0.15%。该方法检测三氯蔗糖样品前处理操作简单、分离效果好及保留时间短,可作为果汁饮品中三氯蔗糖含量的一种快速检测方法。
A method of ion chromatography-pulsed amperometric determination of sucralose in fruit juice drinks was established. The content of sucralose in the juice beverage was analyzed with CarboPacPA1 high efficiency anion exchange column, sodium hydroxide as eluent, gradient elution, pulse amperometric detector (PAD), retention time, external standard Legal quantity. The results showed that sucralose could be separated within 20min on CarboPacPA1 and all had a wide linear range (50 ~ 5000mg / L). The average recovery of the sample was 100.26%, and the RSD of the precision test result was 0.15%. The method for detecting sucralose sample pretreatment is simple, the separation effect is good and the retention time is short, which can be used as a rapid detection method of sucralose content in fruit juice drinks.