【作者】 迟国祥； 户晶晶； 谢乐芳； 王力；

【Author】 Chi Guoxiang;Hu Jingjing;Xie Lefang;Wang Li;College of food and biology engineering, Jimei University;

【机构】 集美大学食品与生物工程学院；

【摘要】 文章合成并表征了四种过渡金属取代的磷钼酸盐Na₇PMo₁₁M（Ⅱ） O₄₀ （M=Ni,Co,Mn,Zn）(简写为PMo₁₁M（Ⅱ）)及其母体磷钼酸(H₃PMo₁₂O₄₀,简写为PMo₁₂),运用循环伏安法分别研究了不同多酸化合物浓度、不同扫速对电化学响应电流的影响以及多酸化合物对酪氨酸酶的催化作用,得到响应电流与酪氨酸酶加入量的线性曲线方程,并计算出其对应的检出限,由检测限分析可知五种化合物的检测效果为:PMo₁₁Ni最优,PMo₁₁Mn次之,均优于母体PMo₁₂,而PMo₁₁Zn和PMo₁₁Co均不如母体,且PMo₁₁Co最差。综合考虑,本研究能够为多金属氧酸盐用于评价果蔬品质提供更多的理论和实验支持。更多还原

【Abstract】 The article synthesized and characterizedNa₇PMo₁₁NiO₄₀,Na₇PMo₁₁CoO₄₀,Na₇PMo₁₁Mn O₄₀ and Na₇PMo₁₁ZnO₄₀(PMo₁₁Ni,PMo₁₁Co,PMo₁₁Mn and PMo₁₁Zn),four transition metals substituted phosphomolybdate.Using cyclic voltammetry to study the effect of different polyacid compounds concentrations and different scan rate to electrochemical response current,also the catalytic effects of polyacid compounds to tyrosinase.From the CV map to get the linear curve equation and work out the detection limits,the result showed that PMo₁₁Ni was optimal,PMo₁₁Mn took the second place,and both outweigh the parent PMo₁₂,while PMo₁₁Zn and PMo₁₁Co were inferior to the parent PMo₁₂ with showing the worst effect.In short,the study can provide more theoretical and experimental supports to apply polyoxometallates for evaluating the quality of fruits and vegetables.更多还原