Voltammetric Determination of Pb(II) by a Ca-MOF-Modified Carbon Paste Electrode Integrated in a 3D-Printed Device.
Evaggelia VlachouAntigoni MargaritiGiannis S PapaefstathiouChristos KokkinosPublished in: Sensors (Basel, Switzerland) (2020)
In this work, a voltammetric method based on a metal organic framework (Ca-MOF)-modified carbon paste electrode for lead determination was developed. The MOF-based electrode was packed in a new type of 3D-printed syringe-type integrated device, which was entirely fabricated by a dual extruder 3D printer. After optimization of the operational parameters, a limit of detection of 0.26 µg L-1 Pb(II) was achieved, which is lower than that of existing MOF-based lead sensors. The device was used for Pb(II) determination in fish feed and bottled water samples with high accuracy and reliability. The proposed sensor is suitable for on-site analyses and provides a low-cost integrated transducer for the ultrasensitive routine detection of lead in practical applications.
Keyphrases
- metal organic framework
- molecularly imprinted
- low cost
- solid phase extraction
- heavy metals
- label free
- carbon nanotubes
- loop mediated isothermal amplification
- aqueous solution
- real time pcr
- clinical practice
- simultaneous determination
- risk assessment
- solid state
- gold nanoparticles
- mass spectrometry
- liquid chromatography