VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Dimethoate detection through a fluorescent coumarin dye [Elektronski vir]
    Donà, Edoardo ; Mohr, Gerhard J. ; Lobnik, Aleksandra
    In this study, we present a straightforward and innovative approach utilizing a coumarin fluorescent dye for the detection of dimethoate in green tea. Initially, the pesticide undergoes hydrolysis in ... a NaOH solution, yielding our target analyte, methylamine. Following neutralization to pH 9, methylamine reacts with the dye in CH3CN for 20 min. After a careful optimization, we achieved an outstanding linear correlation (R2 = 0.999) for dimethoate, spanning concentrations from 7.8 to 292 µg/L and LOD of 3.2 µg/L. Moreover, we successfully detected dimethoate in green tea, with a recovery of 95.4% (σ = 5.7%). Organophosphates pesticides (OPs), which dimethoate is one of the most used, pose a significant threat due to their toxicity upon both high direct exposure and prolonged low-level exposure, which has been linked to cancer. Therefore, the development of a detection method that is both selective and sensitive is imperative for safeguarding both the population and the environment. This method effectively addresses the stability challenges encountered by enzyme-based fluorescent sensors, thereby opening new avenues for the detection of organophosphate pesticides.
    Vir: Microchemical journal [Elektronski vir]. - ISSN 1095-9149 (Vol. 207, Dec. 2024, str. 1-6, [article no.] 112205)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2024
    Jezik - angleški
    COBISS.SI-ID - 220023811

    Povezava(-e):

    https://www.sciencedirect.com/science/article/pii/S0026265X24023178?dgcid=author
    Digitalna knjižnica Univerze v Mariboru – DKUM
    DOI

Vnos na polico