重金屬離子,尤其是Cd²⁺,Pb²⁺和Hg²⁺,因其高毒性可直接或間接影響人類健康,引起世界各地巨大的關注,因此研究能快速、便捷、靈敏、高效檢測痕量重金屬離子的電化學生物傳感器具有重要意義。本論文擬用納米多孔類碳糊電極（nanoPPCPE）構(gòu)建電化學傳感器,用于鎘離子、鉛離子、汞離子檢測;同時應用特異性識別重金屬離子的核酸適配體修飾電極構(gòu)建鎘離子、汞離子適配體電化學傳感器,并對實驗條件進行優(yōu)化。本論文主要研究內(nèi)容如下:1、nanoPPCPE的制備及對Cd²⁺、Pb²⁺和Hg²⁺的檢測。制備了以納米碳酸鈣微球為模板,石墨粉為填料的nanoPPCPE,實驗結(jié)果表明,nanoPPCPE的電化學性能明顯優(yōu)于市場所售的玻碳電極和純碳糊電極。將nanoPPCPE應用于標樣中重金屬離子Cd²⁺、Pb²⁺、Hg²⁺的檢測,結(jié)果表明:能定量檢測出微量Cd²⁺和Pb²⁺

【文章來源】：湖南工業(yè)大學湖南省

【文章頁數(shù)】：83 頁

【學位級別】：碩士

【部分圖文】：

反應機理圖

圖 1-2 重金屬離子檢測示意圖[46]Fig. 1-2 Graph of heavy metal ions detection介孔材料被認為是一個受歡迎的修飾材料由于其均勻的孔隙大小，大表面積

重金屬離子適配體篩選示意圖

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