Microfluidic paper-based device integrated with smartphone for pointof-use colorimetric monitoring of water quality index
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2020-06
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The measurements by lab-on-a-chip devices are very interesting regarding the reduction of reagents, time and cost. In this paper, we have described the construction and application of a new device based on colorimetric measurements using a smartphone camera and a microfluidic paper-based device (μPAD), both fixed in supports obtained through 3D printing, employing a polylactic acid filament. The μPAD was evaluated as a water quality index device by colorimetric monitoring of water hardness (Ca2+ and Mg2+), total phenols (catechol), and pH. Under optimized parameters, the proposed method presented a linear range between 20 and 560 mg L−1 for Ca2+ and Mg2+(hardness), 0.20 to 16 mg L−1 of catechol and pH from 4.7 to 12, and limits of detection of 0.083 mg L−1, 0.124 mg L−1 and 0.262, for water hardness, catechol, and pH, respectively. The proposed device was successfully applied for the quality monitoring of the distribution of water samples.
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Point-of-use device, Printer tools, Paper microfluidics, Smartphone colorimetric determination
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SILVA, Vinicius Aparecido Oliani Pedro da et al. Microfluidic paper-based device integrated with smartphone for point-of-use colorimetric monitoring of water quality index. Measurement, [s. l.], v. 164, e108085, 2020. DOI: 10.1016/j.measurement.2020.108085. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0263224120306230?via%3Dihub. Acesso em: 8 ago. 2024.