Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 350, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2021.130810
Keywords
Colorimetric; Sensor array; Nanozymes; Electronic tongues; Organophosphorus pesticides
Funding
- Natural Science Foundation of Beijing Municipality [2192010, 2182012]
- National Natural Science Foundation [11179033]
- Scientific Research Project of Beijing Educational Committee [KM202010028007]
- Capacity Building for Sci-Tech Innovation Fundamental Scientific Research Funds
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A colorimetric sensor array using nanozymes and natural enzymes was developed to discriminate eight different OPs through a cascade reaction system, successfully identifying them in tap water at a concentration of 1 ng mL(-1).
Organophosphorus pesticides (OPs) are widely used in pest control. The residual OPs can cause pollution to the environment and harm to the human body. Although OPs can inhibit the activity of acetylcholinesterase (AChE) and lead to neurological diseases, it also provides enlightenment for the development of a simple and sensitive method for the detection of OPs. Herein, we report a colorimetric sensor array using nanozymes (Fe-N-C nanozymes and Cu-N-C nanozymes) combined with natural enzymes to discriminate eight OPs (Iprobenfos (Ipr), Diazinon (Dia), Crotoxyphos (Cm), Bromophos ethyl (Bro), Dipterex (Dip), Chlorpyrifos methyl (Chl), Ethion (Eth), and Omethoate (Ome)) through a cascade reaction system. Surprisingly, eight OPs were successfully identified in tap water at 1 ng mL(-1).
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