基于猪脑膜的乙酰胆碱酯酶电化学生物传感器的研究及其应用

被引:2
作者
何洁 [1 ,2 ]
肖丹 [1 ]
袁红雁 [1 ]
机构
[1] 四川大学化学工程学院
[2] 成都市排水有限责任公司监测中心
关键词
乙酰胆碱酯酶; 电化学生物传感器; 猪脑膜; 氨基甲酸酯类农药; 西维因;
D O I
暂无
中图分类号
TP212 [发送器(变换器)、传感器]; O657.1 [电化学分析法];
学科分类号
080202 ; 070302 ; 081704 ;
摘要
基于哺乳动物脑组织含有丰富的乙酰胆碱酯酶这一生物学、医药学常识,采用新鲜的猪脑膜作为酶膜,将其紧贴于pH玻璃电极玻璃球敏感膜上作为酶源,构建电化学生物传感器。该传感器对氯化乙酰胆碱具有灵敏的响应。对测定体系的缓冲溶液的pH进行了优化,考察了该传感器的选择性和寿命,并研究了几种与水混溶的有机溶剂对酶相对活性的影响以及传感器在有机溶剂中的稳定性。基于氨基甲酸酯类农药会对乙酰胆碱酯酶发生抑制作用这一机理,选择最佳浓度的有机溶剂作为测试介质,将该传感器用于氨基甲酸酯类农药西维因的测定,具有线性范围广、检测限低、重现性较好的特点。应用于城市污水处理厂的出厂水中西维因的测定,回收率在92.5%105.0%之间,具有实用价值。
引用
收藏
页码:848 / 854
页数:7
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