等离子发射光谱测定蔬菜矿质元素前处理方法研究

Studies on Pre-treatment Method of Determining Mineral Elements in Vegetables by ICP Spectrometer

以黄瓜、大白菜、辣椒、萝卜和菜豆5种蔬菜为试材,对应用等离子发射光谱仪(ICP)测定矿质元素前处理中涉及到的关键因素进行了研究,包括酸介质的选择、标准曲线绘制方法、消化方法、不同样品状态消化等方面。结果表明,由于蔬菜具有新鲜多汁的特性,不同的前处理方法对测定结果有一定的差异。所以要根据样品的不同性状来选择适合的前处理方法,最后获得准确的试验数据。

ICP Spectrometric Method is a high-throughput and accuracy optical test for mineral elements determination.Cucumber,Chinese cabbage,pepper,radish and bean were chosen as materials for mineral elements determination by ICP spectrometric method.Some pre-treatment processes including selection of acid media,drawing method of standard curve,digestion method and different sample digesting state were studied.The results showed that appropriate pre-treatment method can cause some differences on the determination results because of the fresh juicy features of the vegetables.Appropriate pre-treatment method was chosen according to different traits of the samples.Thus,accurate experiment data can be acquired.