建立高效液相色谱法同时测定葡萄酒中柠檬黄、苋菜红和胭脂红3种人工合成色素的方法。样品经固相萃取后,采用Eclipse XDB-C18(5μm,4.6 mm×150 mm i.d)反相色谱柱分离,以0.03 mol/L乙酸铵-甲醇为流动相进行梯度洗脱,柱温45℃,流速0...建立高效液相色谱法同时测定葡萄酒中柠檬黄、苋菜红和胭脂红3种人工合成色素的方法。样品经固相萃取后,采用Eclipse XDB-C18(5μm,4.6 mm×150 mm i.d)反相色谱柱分离,以0.03 mol/L乙酸铵-甲醇为流动相进行梯度洗脱,柱温45℃,流速0.8 m L/min,进样量10μL,采用二极管阵列检测器进行检测。检测波长分别为230、425、515 nm。以目标物的色谱保留时间进行定性,以色谱峰的峰面积用标准曲线外标法进行定量。在优化的色谱条件下,3种色素的线性范围为0~100(μg/m L),相关系数均大于0.999。以S/N=3确定各检出限,柠檬黄、苋菜红和胭脂红的检出限分别为0.53、0.64、0.80μg/L,定量限为1.77μg/L^2.67μg/L(S/N=10)。各目标物的加标回收率为89.30%~103.93%,相对标准偏差均小于5%(n=6)。方法准确、快速、灵敏,适用于葡萄酒中非法添加合成色素的检测。展开更多
In this paper,Dissolved the special phenolic resin for carbon material in alcohol,and thenextracted benzyl chloride by water and trichloromethane in samples.Benzyl chloride was separated and determined using gas chrom...In this paper,Dissolved the special phenolic resin for carbon material in alcohol,and thenextracted benzyl chloride by water and trichloromethane in samples.Benzyl chloride was separated and determined using gas chromatography.The method is accurate,fast and simple.展开更多
文摘建立高效液相色谱法同时测定葡萄酒中柠檬黄、苋菜红和胭脂红3种人工合成色素的方法。样品经固相萃取后,采用Eclipse XDB-C18(5μm,4.6 mm×150 mm i.d)反相色谱柱分离,以0.03 mol/L乙酸铵-甲醇为流动相进行梯度洗脱,柱温45℃,流速0.8 m L/min,进样量10μL,采用二极管阵列检测器进行检测。检测波长分别为230、425、515 nm。以目标物的色谱保留时间进行定性,以色谱峰的峰面积用标准曲线外标法进行定量。在优化的色谱条件下,3种色素的线性范围为0~100(μg/m L),相关系数均大于0.999。以S/N=3确定各检出限,柠檬黄、苋菜红和胭脂红的检出限分别为0.53、0.64、0.80μg/L,定量限为1.77μg/L^2.67μg/L(S/N=10)。各目标物的加标回收率为89.30%~103.93%,相对标准偏差均小于5%(n=6)。方法准确、快速、灵敏,适用于葡萄酒中非法添加合成色素的检测。
文摘In this paper,Dissolved the special phenolic resin for carbon material in alcohol,and thenextracted benzyl chloride by water and trichloromethane in samples.Benzyl chloride was separated and determined using gas chromatography.The method is accurate,fast and simple.
