Abstract
A sensitive and simple analytical method integrated with Fe3O4@SiO2-based extraction with direct electrochemical detection was applied to individually and simultaneously analyze heavy metal ions, including Cd2+, Pb2+, Cu2+, and Hg2+. The Fe3O4@SiO2-based electrochemical sensor was developed through the mixture of heavy metal ions with Fe3O4@SiO2 after alkali treatment, which was modified onto the working electrode surface. The Fe3O4@SiO2 with negative charges after alkali treatment could easily interact with heavy metal ions with positive charges by electrostatic force. Under the optimized conditions, the developed analytical method could be applied to individually and simultaneously detect heavy metal ions with good sensitivity. The detection limits were all in the nanomolar range, and the recoveries ranged from 96.0 to 104.3% for heavy metal ions in milk. Therefore, the proposed analytical method exhibited great potential for quantitatively analyzing multiple heavy metal ions in milk.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
