Fluorometric detection of copper and imidacloprid using nitrogen-doped graphitic carbon dots: A promising method for environmental monitoring.
Luminescence
; 39(8): e4849, 2024 Aug.
Article
in En
| MEDLINE
| ID: mdl-39099225
ABSTRACT
Pesticides in environmental samples pose significant risks to ecosystems and human health since they require precise and efficient detection methods. Imidacloprid (IMI), a widely used neonicotinoid insecticide, exemplifies these hazards due to its potential toxicity. This study addresses the urgent need for improved monitoring of such contaminants by introducing a novel fluorometric method for detecting IMI using nitrogen-doped graphite carbon dots (N-GCDs). The sensor operates by quenching fluorescence through the interaction of Cu2+ ions with N-GCDs. Subsequently, IMI binds to the imidazole group, chelates with Cu2+, and restores the fluorescence of N-GCDs. This alternating fluorescence behavior allows for the accurate identification of both Cu2+ and IMI. The sensor exhibits linear detection ranges of 20-100 nM for Cu2+ and 10-140 µg/L for IMI, with detection limits of 18 nM and 1.2 µg/L, respectively. The high sensitivity of this sensor enables the detection of real-world samples, which underscores its potential for practical use in environmental monitoring and agricultural safety.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Environmental Monitoring
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Copper
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Quantum Dots
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Fluorometry
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Neonicotinoids
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Graphite
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Nitro Compounds
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Nitrogen
Language:
En
Journal:
Luminescence
Journal subject:
BIOFISICA
/
BIOQUIMICA
Year:
2024
Document type:
Article
Affiliation country:
Country of publication: