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Pd/Cu-TCPP(Fe) -多多巴胺介导的磁放松切换免疫传感器用于敏感检测pyrifosos

Yongzhen Dong¹, Jiawei Liu², Liqin Kong³

¹State Key Laboratory of Marine Food Processing and Safety Control, Academy of Food Interdisciplinary Science, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning 116034, PR China.

Journal of hazardous materials

|December 18, 2024

概括

一个新的磁放松开关 (MRS) 免疫传感器以高灵敏度检测pyrifos (CPF). 这种方法为食品和环境样本中的农药残留分析提供了更快,更准确的替代方案.

科学领域:

材料科学材料科学材料科学
分析化学分析化学
环境科学环境科学

背景情况:

检测农药残留物对于食品安全和环境监测至关重要.
像ELISA这样的现有方法可能耗时且缺乏灵敏度.
新型纳米材料为增强生物传感器性能提供了潜力.

研究的目的:

开发一种灵敏的磁放松开关 (MRS) 免疫传感器,用于检测pyrifos (CPF).
使用Pd/Cu-TCPP(Fe) 混合纳米片和聚多巴胺 (PDA) 进行信号放大.
改进现有的农药残留分析方法.

主要方法:

制造具有过氧化酶类活性的Pd/Cu-TCPP(Fe) 混合纳米片.
用山羊抗老鼠IgG (Ab2) 功能化纳米片来创建一个免疫传感器.
使用一种具有竞争力的结合机制,涉及CPF和磁性纳米粒子聚合.
使用磁放松开关 (MRS) 进行信号检测.

主要成果:

优化的免疫传感器显示CPF的线性检测范围为0.5-100 ng/mL.
达到0.24 ng/mL的检测极限 (LOD),明显低于ELISA.
在真实番茄和水样中成功检测到CPF残留物.
结果显示与气相色谱分析具有很高的一致性.

结论:

开发的Pd/Cu-TCPP(Fe) -PDA-MRS免疫传感器为CPF检测提供了高灵敏度和精度.
这种基于纳米材料的方法为农药残留监测提供了一个有希望的替代方案.
该研究强调了MRS免疫传感器在食品和环境安全应用中的潜力.

关键词:

pyrifos检测检测方法 pyrifos检测方法类似酶的催化活性.磁力放松开关免疫传感器在Pd/Cu-TCPP(Fe) 中.聚多巴胺的信号放大.

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