Silk-screen printing carbon nanotube sensor and preparation method thereof and pesticide detection application

The invention relates to a silk-screen printing carbon nanotube sensor and a preparation method thereof and pesticide detection application. The silk-screen printing carbon nanotube sensor comprises asilk-screen printing carbon nanotube electrode, and a first PDDA modification film, a first acetylcholinesterase modification film, a second PDDA modification film, a second acetylcholinesterase modification film and a third PDDA modification film which are sequentially coated on the surface of the silk-screen printing carbon nanotube electrode. The silk-screen printing carbon nanotube sensor canimprove the detection sensitivity and interference resistance, has the advantage of good detection reproducibility, and can be used for determining organophosphorus pesticides in an environment watersample system. 本发明涉及丝网印刷碳纳米管传感器及其制备方法与农药检测应用。丝网印刷碳纳米管传感器包括丝网印刷碳纳米管电极，和在其表面依次涂覆的第一PDDA修饰膜、第一乙酰胆碱酯酶修饰膜、第二PDDA修饰膜、第二乙酰胆碱酯酶修饰膜和第三PDDA修饰膜。该丝网印刷碳纳米管传感器可以提高其检测的灵敏度和抗干扰性，具有检测重现性好的优点，可用于环境水样体系有机磷农药的测定。