Metal-organic framework integrated SPR sensor with enhanced sensitivity for selective chlorpyrifos detection in foods.

Authors

Duygu Çimen, Fatma Yılmaz, Süleyman Çalışkan, Adil Denizli

Published

Food Chemistry 2026

DOI

10.1016/j.foodchem.2026.150649

Citations

0

Abstract

In this study, the metal-organic framework modified chlorpyrifos imprinted (CPF-MOF@MIP), and non-imprinted (MOF@NIP) poly(2-hydroxyethyl methacrylate-N-methacryloyl-L-tryptophan methyl ester) based surface plasmon resonance (SPR) sensors was prepared for the real-time detection of chlorpyrifos from food samples. Surface characterizations of CPF-MOF@MIP and MOF@NIP SPR sensors were performed using Energy-Dispersive X-ray Analysis, atomic force microscopy, and contact angle measurements. Real-time kinetic analyses were performed over a concentration range of 0.05 to 100 ppm. The limit of detection (LOD) and the limit of quantification (LOQ) for CPF-MOF@MIP SPR sensor were calculated as 0.019 ppm and 0.064 ppm, respectively. In selectivity studies performed with CPF-MOF@MIP SPR sensors, it was determined that chlorpyrifos was detected 8.55 and 13.56 times more selectively than carbendazim and chlorothalonil, respectively. Additionally, the applicability of the prepared CPF-MOF@MIP SPR sensors was tested by detecting chlorpyrifos in cucumber and apple juices using both the prepared CPF-MOF@MIP SPR sensors and high-performance liquid chromatography.

Related research

Biosensors

Cite this article

BibTeX

@article{duygu2026,
  title   = {Metal-organic framework integrated SPR sensor with enhanced sensitivity for selective chlorpyrifos detection in foods.},
  author  = {Duygu Çimen and Fatma Yılmaz and Süleyman Çalışkan and Adil Denizli},
  journal = {Food Chemistry},
  doi     = {10.1016/j.foodchem.2026.150649},
  year    = {2026}
}

← All publications DOI: 10.1016/j.foodchem.2026.150649