鲁米诺-铁氰化钾流动注射化学发光法测定红葡萄酒中白藜芦醇的含量  

Flow Injection Chemiluminescence Determination of Resveratrol in Red Wine with Luminol and Potassium Ferricyanide Reaction System

作　　者：刘玉萍[1] 姚悦悦 蒋泳汝 王修中 LIU Yuping;YAO Yueyue;JIANG Yongru;WANG Xiuzhong(The Affiliated Hospital,Qingdao Agricultural University,Qingdao 266109,China;College of Chemistry and Pharmaceutical Sciences,Qingdao Agricultural University,Qingdao 266109,China)

机构地区：[1]青岛农业大学附属医院,青岛266109 [2]青岛农业大学化学与药学院,青岛266109

出　　处：《理化检验（化学分册）》2020年第2期125-129,共5页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：山东省自然科学基金面上项目(ZR2018MB030)。

摘　　要：基于白藜芦醇对鲁米诺-铁氰化钾化学发光反应的增敏作用,对其最佳反应条件进行了系统试验,并结合流动注射,提出了测定红葡萄酒中白藜芦醇含量的流动注射化学发光法。在1×10^-3 mol·L^-1氢氧化钠溶液中,鲁米诺溶液及铁氰化钾溶液的最佳浓度依次为8×10-6,2×10^-5 mol·L^-1。在此条件下,白藜芦醇的线性范围为1.00×10-8~1.00×10^-6 mol·L^-1,检出限(3S/N)为3.0×10^-9 mol·L^-1。对4.00×10^-7 mol·L^-1白藜芦醇标准溶液进行精密度试验,测定值的相对标准偏差(n=11)为2.6%。分析实际样品时,将红葡萄酒样品减压抽滤除去不溶性颗粒,取滤液50mL,煮沸2min,除去挥发性芳香物质,冷却后离心5min,取上清液按仪器工作条件进行测定。按此方法在样品的基础上进行加标回收试验,测得回收率为95.9%~130%。A systematic study was made on the optimum conditions of the enhancement of chemiluminescence of the reaction system between luminol and potassium ferricyanide by the presence of resveratrol,and by combination with the flow injection,a flow injection chemiluminescence method for determination of resveratrol in red wine was proposed.In solution of 1×10^-3 mol·L^-1 NaOH,the optimum concentrations found for luminol solution and potassium ferricyanide solution were 8×10^-6 mol·L^-1 and 2×10^-5 mol·L^-1 respectively.Under this condition,linearity range of resveratrol was found in the range of 1.00×10^-8 to 1.00×10^-6 mol·L^-1,with value of detection limit(3 S/N)of 3.0×10^-9 mol·L^-1.Precision was tested with 4.00×10^-7 mol·L^-1 standard solution of resveratrol,and value of RSD(n=11)of determined value found was 2.6%.In analyzing actual sample,the red wine sample was first filtered under reduced pressure to remove solid particles,and 50 mL of the filtrate was taken and then heated to boiling for 2 min to eliminate the volatile aromatics.After cooling,the solution was centrifuged for 5 min,and the supernatant was taken and determined under the instrumental working conditions.Test for recovery was carried out according to the procedure by addition of standard solution to the sample as matrix.Values of recovery found were in the range of 95.9%to 130%.

关 键 词：流动注射 化学发光法 鲁米诺 铁氰化钾 白藜芦醇 红葡萄酒 

分 类 号：O657.3[理学—分析化学]