摘要
利用ZrO2纳米粒子与有机磷的强吸附作用,制成ZrO2纳米粒子/金电极(ZrO2/Au)有机磷传感器,可实现茶汤中有机磷农残的快速检测。研究结果表明,该有机磷传感器在10～550ng/mL浓度范围内对目标分析物对硫磷有线性响应,检出限为2.0ng/mL。传感器制备简单、操作方便,灵敏度高,再生性好,非特异性吸附小,在食品安全监测领域具有较大的应用潜力。
A novel biosensor for detecting organophosphorus has been prepared. We can quantitatively determine the organophosphorus concentration in tea soap according to the electrochemical response intensity of the modified electrode. The proposed biosensor in optimal conditions has a linear range of 10-550 ng/mL for organophosphorus detection, and its detection limit is 2.0 ng/mL. Moreover, the proposed biosensor has advantages in high sensitivity, low non-specific absorption and advantageous regeneration process. The process for preparation of zirconia nanoparticles is simple and convenient.
出处
《食品科技》
CAS
北大核心
2012年第1期283-287,共5页
Food Science and Technology
