Efficient capture of carbamate and triazole pesticides in environmental waters by functional groups-rich monolithic fibers prior to chromatographic quantification

• Novel monolithic fibers rich in functional groups for MA-SPME were prepared. • FRMA exhibited satisfying capture ability for carbamate and triazole pesticides. • Various factors affecting the capture performance were investigated in detail. • Sensitive and reliable method for the analysis of studied pesticides was developed. Efficient capture of carbamate and triazole pesticides in environmental waters is challenging because of their low contents, high water-solubility and complex sample matrices. In the present study, according to the chemical features of carbamates and triazoles, a functional groups-rich monolithic adsorbent (FRMA) was fabricated and employed as the extraction phase of multiple fibers solid phase microextraction (MF-SPME) using 4-vinylphenylboronic acid and vinylimidazole as mixed functional monomers. Results well evidenced that multiple forces such as B-N coordination, H-bonding, π-π and hydrophobic interactions co-contributed the efficient enrichment of FRMA/MF-SPME towards studied pesticides (extraction efficiencies ranged from 76.8% to 91.7%). Under the optimized parameters, sensitive and reliable method for measurement of trace carbamate and triazole pesticides in a variety of water samples was developed by the combination of FRMA/MF-SPME with high performance liquid chromatography (HPLC) equipped with diode array detector (DAD). The limits of detection varied from 0.0049 μg/L to 0.015 μg/L, and the RSDs for precision were below 10%. The recoveries for different fortified contents (1.0 μg/L and 100 μg/L) were in the range of 82.0–119%, and the RSDs for repeatability varied from 2.1% to 9.2%. Compared with existing approaches, the established approach presents some attractive merits such as minimal labor required, good sensitivity, high cost-effectiveness and eco-friendliness. Thus, the introduced approach can serve as a promising alternative method for routine monitoring of carbamate and triazole pesticides in environmental waters.