【摘要】 为了探索快速检测Hg²⁺的方法,采用水热法制备中空球状的CeO₂纳米材料。利用CeO₂具有生物酶活性能使四甲基联苯胺（TMB）显色的特点,以DNA适配体和铈基材料构建Hg²⁺的检测技术,并对试纸条检测条件进行优化。结果表明当CeO₂浓度为10 mg/mL,DNA适配体浓度为25μmol/L时检测效果最好。通过检测溶液中的Cd²⁺、Ni²⁺、Cr³⁺,得到具有专一性的CeO₂纳米材料制备的试纸条,开发出新的检测Hg²⁺的有效方法。更多还原

【Abstract】 In order to explore the method of rapid detection of Hg²⁺, hollow spherical nano-CeO₂materials were prepared by hydrothermal method.Utilizing the characteristics of CeO₂ with biological enzyme activity to make TMB（tetramethylbenzidine） color,the Hg²⁺ detection technology was constructed with DNA aptamer and cerium-based materials,and the test strip detection conditions were optimized.The results show that the detection effect is best when the concentration of CeO₂ is 10 mg/mL and the concentration of DNA aptamer is 25 μmol/L.By detecting Cd²⁺,Ni²⁺ and Cr³⁺ in the solution,a test strip made of specific nano-CeO₂materials was obtained,and a new effective method for detecting Hg²⁺ was developed.更多还原