Screen-printed microfluidic paper-based analytical device (μPAD) as a barcode sensor for magnesium detection using rubber latex waste as a novel hydrophobic reagent
| Autor: | Rattapol Meelapsom, Maliwan Amatatongchai, Nadh Ditcharoen, Wipark Anutrasakda, Saksri Supasorn, Atitaya Siripinyanond, Purim Jarujamrus, Puttharaksa Naksen |
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| Rok vydání: | 2019 |
| Předmět: |
Chemical resistance
Fabrication 010401 analytical chemistry Microfluidics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry Complexometric titration 0104 chemical sciences Analytical Chemistry Eriochrome Black T chemistry.chemical_compound chemistry Chemical engineering Natural rubber Reagent visual_art Screen printing visual_art.visual_art_medium Environmental Chemistry 0210 nano-technology Spectroscopy |
| Zdroj: | Analytica chimica acta. 1082 |
| ISSN: | 1873-4324 |
| Popis: | This work reports the first use of cis-1,4-polyisoprene obtained from rubber latex (RL) waste as the hydrophobic reagent for the fabrication of a microfluidic paper-based analytical device (μPAD), providing a user-friendly means for magnesium detection. The μPAD was fabricated using a screen printing technique and the barcode-like paper sensor was then used for the detection of Mg(II) ions in RL and water samples. Using different types of paper media (paper towel, Whatman No.1 and Whatman No.4), the results indicate that the key factors in optimizing the quality of the fabricated μPAD include the viscosity of cis-1,4-polyisoprene solution which could be adjusted using different solvents and heating temperatures, the mesh screen size, the pore size of the paper substrates, and the dimension of the sample zone. The fabricated μPAD, which showed high chemical resistance, durability and design flexibility, was tested for the detection of Mg(II) ions using the reaction based on complexometric titration with EDTA where Eriochrome Black T was used as an indicator. An Android application “UBU OMg Sensor” was also developed to provide a simple, fast, and accurate means for end-users to interpret results generated by our developed μPAD. |
| Databáze: | OpenAIRE |
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