Abstract
Paraquat is one of the most toxic materials widely applied in agriculture in most countries. In the present study, a simple, innovative and inexpensive nano biosensor which is based on a thioglycolic acid (TGA) - CdTe@CdS core-shell nanocrystals (NCs) to detect paraquat, is suggested. The NCs based biosensor shows a linear working range of 10–100 nM, and limited detection of 3.5 nM. The proposed sensor that has been well used for the detection and determination of paraquat in natural water samples is collected from corn field and a canal located near to the corn field yielding recoveries as high as 98%. According to our findings, the developed biosensor shows reproducibility and high sensitivity to determine paraquat in natural water samples in which the amount of paraquat has low levels. The suggested method is efficiently applied to paraquat determination in the samples of natural water that are collected from a tap water and a canal located near to the cornfield.
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The authors greatly appreciate the financial support to the present study by the Khorramabad Branch of Islamic Azad University, Lorestan Province, Iran.
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Pourghobadi, Z., Makanali, H. & Zare, H. Highly Sensitive Fluorescent Probe for Detection of Paraquat Based on Nanocrystals. J Fluoresc 31, 559–567 (2021). https://doi.org/10.1007/s10895-020-02679-9
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DOI: https://doi.org/10.1007/s10895-020-02679-9