Green and sustainable self-cleaning flexible SERS base: Utilized for cyclic-detection of residues on apple surface.
Food Chem
; 441: 138345, 2024 May 30.
Article
in En
| MEDLINE
| ID: mdl-38185049
ABSTRACT
Advances in flexible SERS substrates has made it possible to approach the ultimate goal of rapid in-situ monitoring of fruit and vegetable safety, but its vulnerability under laser ablation results in low utilization. In order to solve this problem, a 3D framework of TiO2-doped PVDF\PVP polymer was utilized to self-assemble gold-silver core-shell nanorods (Au@Ag NRs) to prepare a flexible SERS substrate with good physical stability and self-cleaning properties. This substrate showed excellent detection limit and recyclability after the detection of three pesticide residues in apple peel. The LOD of methyl-parathion (MP) was as low as 0.037 ng/cm2, with an RSD of 5.61 % for 5 cycle-detection. The recoveries of two additional pesticides thiram (TMTD) and chlorpyrifos (CPF) were 86.32 %-112.47 %. We hoped that this research will contribute to providing a recyclable and facile method for in-situ analysis of fruit and vegetable surface residues and functional manufacture of flexible SERS substrates.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pesticides
/
Pesticide Residues
/
Malus
/
Metal Nanoparticles
Type of study:
Diagnostic_studies
Language:
En
Journal:
Food Chem
Year:
2024
Document type:
Article
Affiliation country:
China
Publication country:
ENGLAND
/
ESCOCIA
/
GB
/
GREAT BRITAIN
/
INGLATERRA
/
REINO UNIDO
/
SCOTLAND
/
UK
/
UNITED KINGDOM