粮油食品科技2016，Vol.24Issue(2)：73-75,3.
氯金酸分光光度法测定食用油中微量没食子酸丙酯
Determination of trace propyl gallate in cooking oil by spectrophotometry with chloroauric acid
摘要
Abstract
A new method of determination of propyl gallate(PG)in cooking oil by spectrophotometry was developed,based on the principle of propyl gallate(PG)was reduced by chloroauric acid to produce gold nanoparticles,which had a strong absorption peak at 530nm.The effects of chloroauric acid concentra-tion,heating temperature and reaction time on the systems,and interference test of coexisting substances in cooking oil were investigated,the conditions were optimized.Under the optimum experimental condi-tions,the concentration of PG was proportional to the △A in the range of 0.34 ~13.65 μg/mL.The lin-ear equation was △A530nm =0.160 3ρ+0.056 1,with correlation coefficient was 0.994 6,and the detec-tion limit was 0.093 μg/mL.The result of determine PG in cooking oil by the method was the RSD 0.9~3.1%,and the average recovery rate 90.3 ~97.0%.关键词
分光光度法/没食子酸丙酯/金纳米粒子/食用油Key words
spectrophotometry/propyl gallate/gold nanoparticles/cooking oil分类
轻工纺织引用本文复制引用
杨秀军,凌绍明,欧阳辉祥..氯金酸分光光度法测定食用油中微量没食子酸丙酯[J].粮油食品科技,2016,24(2):73-75,3.基金项目
桂西区域生态环境分析和污染控制广西高校重点实验室资助项目 （）
