Eco-friendly electrochemical lab-on-paper for heavy metal detection

Mariana Medina-Sánchez, Miquel Cadevall, Josep Ros, Arben Merkoçi

Research output: Contribution to journalArticleResearchpeer-review

40 Citations (Scopus)

Abstract

© Springer-Verlag Berlin Heidelberg 2015. A disposable electrochemical lateral flow paperbased sensing device for heavy metal detection is proposed. The quantification of lead and cadmium in aqueous samples is demonstrated in a range from 10 to 100 ppb with a limit of detection of 7 and 11 ppb respectively. Moreover, the platform itself, which is made of paper, served as a sample pretreatment material due to its filtering properties. Real samples, especially in which the matrix is usually turbid and would in principle need a previous filtration, are successfully analyzed. This labon-paper device is simple, low cost, easy to fabricate, and portable, being a promising tool for new point-of-care applications in environmental monitoring, public health, and food safety.
Original languageEnglish
Pages (from-to)8445-8449
JournalAnalytical and Bioanalytical Chemistry
Volume407
Issue number28
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • Electrochemical detection
  • Heavy metals
  • Lateral flow
  • Paper microfluidics

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