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Optimization of smartphone-based on-site-capable uranium analysis in water using a 3D printed microdevice

journal contribution
posted on 2023-05-21, 02:21 authored by Dalvand, K, Sepideh Keshan Balavandy, Li, F, Michael BreadmoreMichael Breadmore, Alireza GhiasvandAlireza Ghiasvand
Recent development of portable three-dimensional printed (3DP) microfluidic-based devices has provided a new horizon for real-time field analysis of environmental pollutants. Smartphones with the possibility of launching different software, sensing, and grading color intensity, as well as capability of sending/receiving data through the internet have made this technology very promising. Here, a novel smartphone-based 3DP microfluidic device is reported that uses an image-based colorimetric detection method for the analysis of uranium in water samples, based on the complex formation of uranyl ions with Arsenazo III. The microfluidic device consists of two horizontal channels, separated by an integrated porous membrane, and was printed in a single run using a transparent photopolymer. It enables the operator to see the internal parts and the color change visually, as well as enables the operator to take images and record the color intensity using a smartphone. In each 3DP run, 220 devices are fabricated in 1.5 h (~ 25 s per device) at an estimated price of $2.5 per device. A Box–Behnken design (BBD) was utilized for the optimization of experimental conditions. The calibration curve was linear within 0.5–100 μg mL-1 (R2 > 0.9925) of uranium analysis. The total time of each experiment was approximately 8 min. The 3DP device was successfully employed for the recovery and determination of uranium in spiked natural water samples.

History

Publication title

Analytical and Bioanalytical Chemistry

Volume

413

Pagination

3243-3251

ISSN

1618-2642

Department/School

School of Natural Sciences

Publisher

Springer-Verlag Heidelberg

Place of publication

Tiergartenstrasse 17, Heidelberg, Germany, D-69121

Rights statement

Copyright Crown 2021

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the biomedical and clinical sciences

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