摘要
建立了高效液相色谱测定餐纸中2,4-二硝基苯酚和对羟基苯甲酸丙酯的方法。采用含1%乙酸的乙腈-水混合溶液作为萃取溶剂,紫外检测器检测,外标法定量测定。标准工作曲线相关系数均大于0.9990。2,4-二硝基苯酚的检出限和定量限分别为1.27和4.23 mg/kg,加标回收率范围在86.4%-95.1%;对羟基苯甲酸丙酯的检出限和定量限分别为0.65和2.17 mg/kg,加标回收率在89.6%-95.6%之间。方法可实现餐纸中2,4-二硝基苯酚和对羟基苯甲酸丙酯的准确测定。
A rapid HPLC method was developed for the determination of 2,4-dinitrophenol and propyl phydroxybenzoate in napkins. Good linearity（ r^2 〉0. 9990） for the calibration curve was obtained. The limit of detection（ LOD） for 2,4-dinitrophenol was 1. 27 mg / kg, and the limit of quantification（ LOQ） was4. 23 mg / kg. The limit of detection for propyl p-hydroxybenzoate was 0. 65 mg / kg, and the limit of quantification was 2. 17 mg / kg. Satisfactory recoveries（ 86. 4% - 95. 1% for 2,4-dinitrophenol,and 89. 6% -95. 6% for propyl p-hydroxybenzoate） were achieved. The method was proved to be simple and accurate,and has been applied to the determination of 2,4-dinitrophenol and propyl p-hydroxybenzoate in napkins.
出处
《分析试验室》
CAS
CSCD
北大核心
2014年第12期1469-1471,共3页
Chinese Journal of Analysis Laboratory
