分析测试学报2022，Vol.41Issue(8)：1146-1152,7.DOI:10.19969/j.fxcsxb.22021102
基于酸性离子液体的原位泡腾辅助微萃取法测定饮料与糖果中的亮蓝和赤藓红
Determination of Brilliant Blue FCF and Erythro?sine B in Beverage and Candy Samples Using In-situ Effervescence Assisted Microextraction Method Based on Acidic Ionic Liquid
摘要
Abstract
The anion of acidic ionic liquid 1-butyl-3-methylimidazole hydrogen sulfate([C4MIM][HSO4])reacted with carbonate to produce carbon dioxide. The extraction process was promoted by carbon dioxide bubbles. Mean?while,the cation of[C4MIM][HSO4]reacted in situ with ammonium hexafluorophosphate(NH4PF6)to form hydropho?bic ionic liquid 1-butyl-3-methylimidazole hexafluorophosphate[C4MIM][PF6].[C4MIM][PF6]was separated from water due to their immiscibility with the water.The extraction phase was collected by centrifugation.An in-situ effer?vescent assisted microextraction method based on acidic ionic liquid was established for the analysis of brilliant blue FCF and erythrosine B in beverage and candy samples.Effects of the amount of acidic ionic liquid,sodium bicarbon?ate and salt on the extraction efficiency of the two pigments were investigated. The optimum conditions were as fol?lows:the amount of acidic ionic liquid was 400 mg, the amount of sodium bicarbonate was 0. 4 g and the amount of salt was 1. 5 g.Under the optimal conditions,there were good linear relationships for brilliant blue FCF and erythro?sine B in the range of 0. 005-5μg/mL,with their correlation coefficients not less than 0. 9933.The limits of detec?tion(LODs)and limits of quantitation(LOQs)were in the range of 0. 002-0. 005μg/mL and 0. 007-0. 017μg/mL, respectively. Additionally, the recoveries for two synthetic pigments at two spiked levels of 0. 05 and 0. 5 μg/mL ranged from 92. 2％to 107％,with the intra-day and inter-day relative standard deviations(RSDs)both 2. 2％-8. 7％. The proposed method was successfully applied to the detection of two target pigments in beverage and candy samples . The results showed that the method was environmentally friendly,simple and accurate.It could be used for the deter?mination of brilliant blue FCF and erythrosine B in beverage and candy samples .关键词
离子液体/泡腾辅助微萃取/合成色素/饮料/糖果Key words
ionic liquid/effervescence assisted microextraction/synthetic pigments/beverage/candy分类
化学化工引用本文复制引用
王庆,邱彬,何艳,王玲娟,张辉,杨二玲,张晓元..基于酸性离子液体的原位泡腾辅助微萃取法测定饮料与糖果中的亮蓝和赤藓红[J].分析测试学报,2022,41(8):1146-1152,7.基金项目
Excellent Youth Fund Project of Hunan Provincial Education Department(20B542) （20B542）
Innovation and Entrepreneurship Training Program for College Students in Hunan Province(XJT[2021]No.197-serial number 3669) （XJT[2021]No.197-serial number 3669）
Horizontal Scientific Re?search Project(2021E82) （2021E82）
Guangdong Science and Technology Plan Project(200729176271266) （200729176271266）
Hunan Provincial Natural Sci?ence Foundation Project(2021JJ80074) （2021JJ80074）
Hunan Province Applied Characteristic Discipline Construction Funding Project （）
