School of Pharmacy, Wenzhou Medical College, Wenzhou 325000, China.
J Sci Food Agric. 2011 Dec;91(15):2821-5. doi: 10.1002/jsfa.4527. Epub 2011 Jul 1.
Ponceau 4R and tartrazine have been widely used in foodstuffs. However, they are pathogenic if they are excessively consumed. Therefore, the detection of Ponceat 4R and tartrazine is quite important.
A sensitive and rapid electrochemical method was developed for the simultaneous detection of Ponceat 4R and tartrazine using anodic adsorptive stripping voltammetry and based on the strong enhancement effect of acetylene black nanoparticle. For Ponceat 4R, the linear range was from 0.05 to 4 mg kg(-1) , and the limit of detection was 0.03 mg kg(-1) . For tartrazine, the linear range was from 0.15 to 18 mg kg(-1) , and the limit of detection was 0.1 mg kg(-1) . The relative standard deviation was 3.8% and 4.7% for 10 successive measurements of 1 mg kg(-1) Ponceau 4R and tartrazine. The method was used to determine Ponceat 4R and tartrazine in soft drinks, and recovery was in the range of 92.4-104.8%.
At the acetylene black nanoparticle-modified electrode, the oxidation current signal of Ponceau 4R and tartrazine greatly increase. This new method is sensitive, rapid, simple and feasible.
胭脂红 4R 和柠檬黄已被广泛应用于食品中。然而，如果摄入过量，它们是有毒的。因此，检测胭脂红 4R 和柠檬黄是非常重要的。
本文采用阳极吸附溶出伏安法，基于乙炔黑纳米粒子的强增强效应，建立了一种同时检测胭脂红 4R 和柠檬黄的灵敏、快速电化学方法。对于胭脂红 4R，线性范围为 0.05-4mgkg（-1），检测限为 0.03mgkg（-1）。对于柠檬黄，线性范围为 0.15-18mgkg（-1），检测限为 0.1mgkg（-1）。1mgkg（-1）胭脂红 4R 和柠檬黄连续 10 次测量的相对标准偏差分别为 3.8%和 4.7%。该方法用于测定软饮料中的胭脂红 4R 和柠檬黄，回收率在 92.4%-104.8%之间。
在乙炔黑纳米粒子修饰电极上，胭脂红 4R 和柠檬黄的氧化电流信号大大增加。该新方法灵敏、快速、简单、可行。
