Pesticides have been utilized in agriculture for decades. However, their widespread use has increased
concerns due to their known toxicities on long term human health risks in scientific and industrial communities.
Thus, the detection of pesticides will have a great prescription due to both improve their toxicity effects over
humans and their management. In this study, poly[ethyleneglycol dimethacrylate-N-methacryloyl-(L)-tryptophan
methyl ester poly(EGDMA-MATrp) nanoparticles for sensitive, selective, fast and realtime detection chlorpyrifos
were firstly prepared and characterized by zeta sizer. Then, a chlorpyrifos-printed SPR nanosensor was prepared and
characterized by atomic force microscopy (AFM) and contact angle measurements. The thickness measurements
and AFM observations indicated that the nanoparticle thin films were almost monolayer. Chlorpyrifos sensing
ability of imprinted and nonimprinted nanosensors were investigated from chlorpyrifos solutions within the range
of 0.015-2.9 nM. Imprinted nanoparticles showed more sensitivity to chlorpyrifos than non-imprinted ones.
Langmuir adsorption model was determined as the most suitable model for this affinity system. In order to show
the selectivity of the chlorpyrifos imprinted nanoparticles, competitive adsorption of chlorpyrifos, diazinon and
parathion at 2.9 nM concentration was investigated. As a result of, SPR nanosensors have a potential to be used as
an alternative method for pesticides analysis due to fast response, easy-to-use properties, precision, selective and
real-time measurement capability.
Primary Language | Turkish |
---|---|
Subjects | Chemical Engineering |
Journal Section | Kimya / Chemistry |
Authors | |
Publication Date | September 30, 2018 |
Submission Date | December 13, 2017 |
Acceptance Date | February 22, 2018 |
Published in Issue | Year 2018 |