论文部分内容阅读
用离子色谱法同时对饮料中的磷酸、糖精和柠檬酸的含量进行了测定。由阴离子交换分离,抑制电导检测,能快速准确地测定它们的含量,该法的检测下限对磷酸、糖精及柠檬酸分别为0.03、0.08和0.10μg/ml,而线性范围分别为0.03～500、0.08～1000和0.10～100μg/ml。磷酸、糖精和柠檬酸标准曲线的线性关系很好,它们的线性相关系数均在0.9997以上。该法对饮料中的磷酸、糖精和柠檬酸进行了测定,有较好的回收率。
The contents of phosphoric acid, saccharin and citric acid in the beverage were simultaneously determined by ion chromatography. By anion exchange separation, inhibition of conductivity detection, can quickly and accurately determine their content, the detection limit of the method of phosphate, saccharin and citric acid were 0.03,0.08 and 0.10μg / ml, respectively, and the linear range of 0.03 to 500, respectively, 0.08 to 1000 and 0.10 to 100 μg / ml. Phosphate, saccharin and citric acid standard curve of the good linear relationship, their linear correlation coefficient of 0.9997 or more. The law of the drinks of phosphoric acid, saccharin and citric acid were determined, a better recovery.