These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Smartphone-based microfluidic chip modified using pyrrolidine-1-dithiocarboxylic acid for simultaneous colorimetric determination of Cr3+ and Al3+ ions.
    Author: Taheri H, Khayatian G.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2022 May 05; 272():121000. PubMed ID: 35151170.
    Abstract:
    A portable µ-chip-based colorimetric device was developed for the determination of Cr3+ and Al3+ ions. The silver nanoparticles were modified with pyrrolidine-1-dithiocarboxylic acid ammonium salt as a novel ligand for the first time. The color of modified AgNPs in the test zone immediately changes after the addition of Cr3+ and Al3+ ions. The resulting color changes were detected by the naked eye or were taken by a smartphone camera. The obtained images were analyzed by RGB software to assay the Cr3+ and Al3+ ions concentration. Under optimized experimental conditions, the linear ranges are 0.1-220 and 0.01-250 µM for Cr3+ and Al3+ ions, respectively. The probe has a limit of detections of 10.66 and 3.55 nM for Cr3+ and Al3+ in an aqueous solution. In the case of µ-chip, the concentration ranges are 0.1-200 μM and 0.01-220 μM for Cr3+ and Al3+ ions, with detection limits of 9.18 and 2.30 nM, respectively. The µ-chip showed great potential as a fast detection tool for the monitoring of Cr3+ and Al3+ ions in real samples such as river water samples.
    [Abstract] [Full Text] [Related] [New Search]