机构地区: 广州大学环境科学与工程学院环境科学系
出 处: 《食品科学》 2007年第2期227-228,共2页
摘 要: 在0.025mol/L醋酸-0.025mol/L醋酸钠缓冲介质中加入EDTA(ethylene diamine tetraacetic acid),以差示脉冲阳极溶出伏安法测定蔬菜中的铊。铊浓度在5.0×10-4~1.0×10-1mg/L范围有良好的线性关系,检出限为1.0×10-4mg/L,回收率为97.0%~104%。对部分蔬菜的测定结果表明,铊污染土壤上种植蔬菜中铊含量显著高于空白土壤上种植的蔬菜。 The determination of thallium in vegetables by differential pulse anodic stripping voltammetry with 0.025mol/L NaAc-0.025HAc buffer solution with EDTA was studied. The contents of Ihallinm in the range of 5.0 × 10^- 4- 1.0 × 10^-1mg/L has a good linear relationship and the detection limit is 1.0 ×10^-4mg/L. Using the method to determine some vegetables, the results showed that the thallium contents of vegetables in thallium pollution soil is apparently higher than that in blanc soil.
关 键 词: 蔬菜 铊 差示脉冲阳极溶出伏安法 测定