离子液体萃取-分光光度法测定纸中荧光增白剂  

Determination Contents of Fluorescent Whitening Agents in Paper by Spectrophotometry after Ionic Liquid Extraction

作　　者：余枫林 刘冰欣 李俏然 陈亚东 王利强 王金秀[1] YU Feng-lin;LIU Bing-xin;LI Qiao-ran;CHEN Ya-dong;WANG Li-qiang;WANG Jin-xiu(College of Materials and Chemical Engineering,Chuzhou University,Anhui Chuzhou 239000,China)

机构地区：[1]滁州学院材料与化学工程学院,安徽滁州239000

出　　处：《广州化工》2022年第17期110-112,共3页GuangZhou Chemical Industry

基　　金：安徽省大学生创新创业项目(No:2020CXXL115);滁州学院科研项目(No:HX2018136)。

摘　　要：合成了六氟磷酸1-丁基-3-甲基-咪唑[Bmim][PF_(6)]离子液体,并用其对荧光增白剂VBL进行萃取。结果表明,当溶液酸度为pH 10,在10 mL溶液中,离子液体加入量为0.6 mL,在80℃萃取15 min,离子液体对荧光增白剂VBL的萃取率最大。荧光增白剂VBL的浓度在0~25μg·mL^(-1)范围内与吸光度呈线性关系,相关系数R=0.9985,方法的检出限为0.048μg·mL^(-1),回收率在87.1%~94.2%之间。The ionic liquid 1-butyl-3-methyl-imidazolium hexafluorophosphate[Bmim][PF_(6)]was synthesized and used to extract fluorescent whitening agents VBL The results showed that when the acidity of solution was pH 10 and the amount of ionic liquid was 0.6 mL in 10 mL solution,the extraction efficiency of fluorescent whitening agent VBL in ionic liquid was the highest at 80℃for 15 min.The absorbance had a good line relationship between the concentration of fluorescent whitening agents VBL in the rage of 0~25μg·mL^(-1),correlation coefficient was 0.9985,the limit of detection was 0.048μg·mL^(-1),and average recovery rate were between 87.1%~94.2%.

关 键 词：离子液体萃取 荧光增白剂VBL 分光光度法 

分 类 号：O652.3[理学—分析化学]