Abstract
A disposable electrochemical lateral flow paper-based 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 lab-on-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.
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ABC Highlights: authored by Rising Stars and Top Experts.
Mariana Medina-Sánchez and Miquel Cadevall contributed equally to this work.
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Medina-Sánchez, M., Cadevall, M., Ros, J. et al. Eco-friendly electrochemical lab-on-paper for heavy metal detection. Anal Bioanal Chem 407, 8445–8449 (2015). https://doi.org/10.1007/s00216-015-9022-6
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DOI: https://doi.org/10.1007/s00216-015-9022-6