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cryjslong

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[求助] Fe3O4 peroxidase-like H2O2 detection的操作

有做过相关实验的高手吗?看到一些文献说Fe3O4纳米粒子具有类过氧化氢酶的行为,用TMB标定,在含有Fe3O4纳米粒子(300 nm以下)和H2O2的醋酸缓冲液中,40度反应一个小时会由无色变成蓝色。可我用了纳米Fe3O4尝试过,但没有变化啊。按说只要是纳米Fe3O4的粒子应该都会有这种颜色变化的啊?这个反应的具体操作是怎么做?有什么要点吗?微量的Fe3O4称取时能用分散稀释法量取吗?TMB的溶液是用什么溶剂配制的?请高手给予指点,非常感谢~
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