A nitrocellulose paper strip for fluorometric determination of bisphenol A using molecularly imprinted nanoparticles

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Uzek R., Sari E., ŞENEL S., DENİZLİ A., Merkoci A.

Microchimica Acta, vol.186, no.4, 2019 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 186 Issue: 4
  • Publication Date: 2019
  • Doi Number: 10.1007/s00604-019-3323-y
  • Journal Name: Microchimica Acta
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Graphene quantum dot, Endocrine disruptor, Fluorescence quenching, Paper sensor, Molecular recognition, GRAPHENE QUANTUM DOTS, WATER, CHROMATOGRAPHY, RECOGNITION
  • Hacettepe University Affiliated: Yes


© 2019, Springer-Verlag GmbH Austria, part of Springer Nature. The authors describe a test stripe for fluorometric determination of the endocrine disruptor bisphenol A (BPA). Graphene quantum dots (GQDs) were immobilized on molecularly imprinted nanoparticles which then were placed on nitrocellulose paper. The GQDs display blue fluorescence (with excitation/emission peaks at 350/440 nm) which is reduced in the presence of BPA. The test stripe has a 43.9 ± 0.8 μg·L −1 limit of detection in case of water samples. The stripe was applied to the determination of BPA in (spiked) tap water and sea water, and the LODs were found to be 1.8 ± 0.2 μg·L −1 and 4.2 ± 0.5 μg·L −1 , respectively. Structural analogs of BPA, such as aminophenol, phenol, hydroquinone and naphthol were found not to interfere. [Figure not available: see fulltext.].