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作 者:王浩然[1,2] 杨维成[2,3] 涂亚辉 杨超[2] 方超[2] 李美华[2,3] 罗勇[2,3] 吴范宏[1]
机构地区:[1]上海应用技术学院,上海201418 [2]上海化工研究院,上海200062 [3]国家同位素工程技术研究中心-上海分中心,上海200062
出 处:《应用化学》2016年第8期939-944,共6页Chinese Journal of Applied Chemistry
基 金:国家科技支撑计划(2015BAK45B01-20)资助项目~~
摘 要:以全氘代邻二甲苯为同位素标记前体,经氧化得到的D4-邻苯二甲酸与3-羟基-N,N-Z.乙基苯胺反应生成稳定同位素标记的D4-罗丹明B,总收率36.9%。目标产物的结构经质谱(Ms)、核磁(NMR)等技术手段表征确认,通过高效液相色谱确定化学纯度高于98.0%,同位素氘丰度大于98.0%。将其作为同位素内标试剂用于果汁中罗丹明B的残留检测,在0.05—50mg/L范围内呈良好的线性关系,其检出限为5μg/kg,回收率为96.4%-103.4%,相对标准偏差(RSD)为1.0%~1.2%,具有很高的灵敏度和准确性。为食品安全领域违禁色素的检测提供了一种可靠实用的方法。This paper presents an efficient synthesis of stable isotope labeled D4-rhodamine B from deuterated orthoxylene through oxidation and its reaction with 3-diethylaminophenol in 36. 9% total yield. The deuterated product was confirmed by mass spectrometry (MS) and nuclear magnetic resonance (NMR). Its chemical purity is higher than 98.0% by high performance liquid chromatography( HPLC), and isotopic enrichment is higher than 98.0% (atom D ). D4-rhodamine B was used as internal standard for the determination of rhodamine B in orange juice with linear calibration curve of 0. 05 - 50 mg/L, limit for determination of 5μg/kg, recovery of 96. 4% - 103.4% and relative standard deviation (RSD) of 1.0% - 1.2%. This method is proved to be accurate and sensitive for the determination of rhodamine in food safety.
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