三苯甲烷染料灿烂绿共振瑞利散射法测定青苹果中的苹果酸

发布时间：2018-07-09 19:02

本文选题：三苯甲烷染料 + 灿烂绿　；参考：《分析试验室》2016年12期

【摘要】：建立了快速测定青苹果中苹果酸的共振瑞利散射新方法。在弱碱性的Tris-HCl缓冲介质中,三苯甲烷染料灿烂绿与苹果酸反应生成绿色二元离子缔合物,使共振瑞利散射(RRS)显著增强并产生新的RRS光谱,最大共振瑞利散射峰位于340 nm处,苹果酸的质量浓度在(0.003~0.40)×10-3g/L范围内与体系的共振瑞利散射增强程度ΔIRRS呈线性关系,定量限为0.0070 g/100 g。还探讨了适宜的反应条件及主要分析化学性质,方法用于青苹果中苹果酸的测定,结果满意。
[Abstract]:A new method for rapid determination of malic acid in green apple by resonance Rayleigh scattering (RRS) was established. In the weak alkaline Tris-HCl buffer medium, the brilliant green of triphenylmethane dye reacts with malic acid to form a green binary ion association complex, which enhances the resonance Rayleigh scattering (RRS) and produces a new RRS spectrum. The maximum resonance Rayleigh scattering peak is at 340 nm. The concentration of malic acid in the range of (0.003 ~ 0.40) 脳 10 ~ (-3) g / L has a linear relationship with the enhancement degree of resonance Rayleigh scattering (螖 IRRS) of the system, and the quantitative limit is 0.0070 g / 100 g / L. The suitable reaction conditions and main analytical chemical properties were also discussed. The method was applied to the determination of malic acid in green apple with satisfactory results.
【作者单位】：长江师范学院化学化工学院重庆市无机特种功能材料重点实验室;
【基金】：重庆市教委科技基金资助项目(KJ1401226) 长江师范学院科技基金资助项目(2015CXX080)资助
【分类号】：O657.3;S661.1

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