Smartphone-assisted colorimetric biosensor for the determination of organophosphorus pesticides on the peel of fruits.
Food Chem
; 443: 138459, 2024 Jun 15.
Article
in En
| MEDLINE
| ID: mdl-38306911
ABSTRACT
Nowadays, the widespread use of organophosphorus pesticides (OPs) in agricultural production leads to varying degrees of residues in crops, which pose a potential threat to human health. Conventional methods used in national standard for the detection of OPs in fruits and vegetables require expensive instruments or cumbersome sample pretreatment steps for the analysis. To address these challenges, in this work, we took advantage of the peroxidase-like activity of PtCu3 alloy nanocrystals (NCs) for a colorimetric and smartphone assisted sensitive detection of OPs. With the assist of a smartphone, the concentration of OPs on the peel of fruits could be obtained by comparing the B/RG value (the brightness value of blue divided by those of red and green) of a test strip with a calibration curve. This work not only provides a facile and cost-effective method to detect pesticides but also makes a positive contribution to food safety warning.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pesticides
/
Biosensing Techniques
Limits:
Humans
Language:
En
Journal:
Food Chem
Year:
2024
Document type:
Article