1.湘南学院 药学院,湖南 郴州 423000
2.郴州市疾病预防控制中心,湖南 郴州 423000
3.韶关市华工高新技术产业研究院,广东 韶关 512000
4.华南理工大学 工业技术研究总院,广东 广州 510640
ZHANG Xiao-yuan,Doctor,Associate professor,Research fields:Safety of food and drug,E - mail:xyzh@scut.edu.cn
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王庆,邱彬,何艳等.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(08):1146-1152.
WANG Qing,QIU Bin,HE Yan,et al.Determination of Brilliant Blue FCF and Erythrosine B in Beverage and Candy Samples Using In-situ Effervescence Assisted Microextraction Method Based on Acidic Ionic Liquid[J].Journal of Instrumental Analysis,2022,41(08):1146-1152.
王庆,邱彬,何艳等.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(08):1146-1152. DOI: 10.19969/j.fxcsxb.22021102.
WANG Qing,QIU Bin,HE Yan,et al.Determination of Brilliant Blue FCF and Erythrosine B in Beverage and Candy Samples Using In-situ Effervescence Assisted Microextraction Method Based on Acidic Ionic Liquid[J].Journal of Instrumental Analysis,2022,41(08):1146-1152. DOI: 10.19969/j.fxcsxb.22021102.
利用酸性离子液体1-丁基-3-甲基咪唑硫酸氢盐([C,4,MIM][HSO,4,])的阴离子与碳酸盐反应产生二氧化碳,通过气泡促进萃取过程。在萃取的同时,[C,4,MIM][HSO,4,]的阳离子和六氟磷酸铵(NH,4,PF,6,)原位反应形成疏水性的离子液体1-丁基-3-甲基咪唑六氟磷酸盐([C,4,MIM][PF,6,]),从而与水相分离,通过离心收集萃取相,建立了一种基于酸性离子液体的原位泡腾辅助微萃取饮料与糖果样品中亮蓝和赤藓红的方法。考察了酸性离子液体、碳酸氢钠和盐用量对2种色素萃取效率的影响,得到最佳条件为酸性离子液体用量400 mg,碳酸氢钠用量0.4 g,盐用量1.5 g。采用最优条件,目标物亮蓝与赤藓红的质量浓度在0.005 ~ 5 µg/mL范围内呈良好的线性关系,相关系数不小于0.993 3,检出限(LOD)和定量下限(LOQ)分别为0.002 ~ 0.005 µg/mL和0.007 ~ 0.017 µg/mL,日内和日间相对标准偏差(RSD)为2.2% ~ 8.7%。在0.05、0.5 μg/mL 2个加标水平下,回收率为92.2% ~ 107%。所建方法成功用于饮料和糖果样品中2种目标色素的检测。该方法环保、简单且准确,可用于饮料和糖果样品中亮蓝与赤藓红的测定。
The anion of acidic ionic liquid 1-butyl-3-methylimidazole hydrogen sulfate([C,4,MIM][HSO,4,]) reacted with carbonate to produce carbon dioxide.The extraction process was promoted by carbon dioxide bubbles.Meanwhile,the cation of [C,4,MIM][HSO,4,] reacted in situ with ammonium hexafluorophosphate(NH,4,PF,6,) to form hydrophobic ionic liquid 1-butyl-3-methylimidazole hexafluorophosphate [C,4,MIM][PF,6,].[C,4,MIM][PF,6,] was separated from water due to their immiscibility with the water.The extraction phase was collected by centrifugation.An in-situ effervescent 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 bicarbonate and salt on the extraction efficiency of the two pigments were investigated.The optimum conditions were as follows: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 erythrosine B in the range of 0.005-5 µg/mL,with their correlation coefficients not less than 0.993 3.The limits of detection(LODs) and limits of quantitation(LOQs) were in the range of 0.002-0.005 µg/mL and 0.007-0.017 µg/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 determination of brilliant blue FCF and erythrosine B in beverage and candy samples.
离子液体泡腾辅助微萃取合成色素饮料糖果
ionic liquideffervescence assisted microextractionsynthetic pigmentsbeveragecandy
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