skip to main content
Idioma:
Tipo de recurso Mostra resultados com: Mostra resultados com: Índice

Porous aromatic framework coated stir bar sorptive extraction coupled with high performance liquid chromatography for the analysis of triazine herbicides in maize samples

Zheng, Sijie ; He, Man ; Chen, Beibei ; Hu, Bin

Journal of Chromatography A, 2020-03, Vol.1614, p.460728, Article 460728 [Periódico revisado por pares]

Netherlands: Elsevier B.V

Texto completo disponível

Citações Citado por
  • Título:
    Porous aromatic framework coated stir bar sorptive extraction coupled with high performance liquid chromatography for the analysis of triazine herbicides in maize samples
  • Autor: Zheng, Sijie ; He, Man ; Chen, Beibei ; Hu, Bin
  • Assuntos: Chemistry Techniques, Analytical - instrumentation ; Chemistry Techniques, Analytical - methods ; Chromatography, High Pressure Liquid ; Herbicides - analysis ; Herbicides - isolation & purification ; High performance liquid chromatography ; Limit of Detection ; Maize ; Porosity ; Porous aromatic framework ; Reproducibility of Results ; Stir bar sorptive extraction ; Triazine herbicides ; Triazines - analysis ; Triazines - isolation & purification ; Zea mays - chemistry
  • É parte de: Journal of Chromatography A, 2020-03, Vol.1614, p.460728, Article 460728
  • Descrição: •Triazine rings-containing porous aromatic framework (PAF-56p) was synthesized.•Novel PAF-56p coated stir bar was prepared for extraction of six triazine herbicides.•It shows excellent extraction performance to target analytes with different polarity.•A SBSE-HPLC-DAD method was developed for trace triazine herbicides analysis in maize.•It has a good application potential for analyzing trace triazine herbicides in crops. Triazine rings-containing porous aromatic framework (PAF-56p) was synthesized through a Friedel-Crafts reaction and investigated as a coating for the stir bar sorptive extraction (SBSE) of interest triazines. The triazine rings and conjugated groups in PAF-56p could interact with triazine rings-containing herbicides by hydrophobic and π-π interactions. The PAF-56p coated stir bar showed superior extraction performance over commercial PDMS and EG coated stir bar in terms of extraction efficiency and dynamics towards six triazine herbicides with different polarity. Based on it, a method by combining PAF-56p-SBSE with high performance liquid chromatography (HPLC)-diode array detector (DAD) was established for the analysis of six target triazine herbicides, including simazine, atrazine, ametryn, prometon, prometryne and prebane. The affecting factors of SBSE were investigated by single-factor test. Under the optimized conditions, the limits of detection of the proposed method were ranged from 0.037 to 0.089 μg/L with the linear range within 0.1–200 μg/L for six triazine herbicides. High enrichment factors (EFs) of 61.8–89.5-fold (theoretical EF is 100-fold) were achieved. The developed PAF-56p-SBSE-HPLC-DAD method was successfully applied for trace triazine herbicides analysis in maize and maize leaf samples, with recoveries in the range of 86.5–115% and 85.1–114% for spiked maize and maize leaf samples, respectively.
  • Editor: Netherlands: Elsevier B.V
  • Idioma: Inglês
Links
Voltar para lista de resultados
Ir para página anteriorAnterior Resultado  9 AvançarIr para próxima página

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.