高效液相色谱法检测碳酸饮料中两种防腐剂的研究

打开文本图片集

Abstract： This paper establishes an analytical method for the detection of benzoic acid and sorbic acid in carbonated beverages by high performance liquid chromatography. The sample was ultrasonically extracted at 50% for 20min After passing through a 0.22μm aqueous phase filter membrane， it was separated using a C18 chromatographic column，determined bya diode array detector，and quantifiedbytheexternal standard method.The results showed that the linear relationship between the two preservative components is good when the mass concentration was （20 0μg⋅mL-1 to 100.0μg⋅mL-1 ，with a method detection limit of 0.005g⋅kg-1 ，a quantification limit of 0.010g⋅kg-1 ， a spiked recovery rate of 95.5% to 98.3% ，and a relative standard deviation of 1.98% to 3.23% .This method is rapid and accurate， and is suitable for the detection of two preservatives in carbonated beverages.

Keywords： high performance liquid chromatography; carbonated beverages; benzoic acid; sorbic acid

碳酸饮料是全球范围内主要的饮品之一。（剩余3189字）