期刊
CANADIAN JOURNAL OF CHEMISTRY
卷 97, 期 5, 页码 373-377出版社
CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
DOI: 10.1139/cjc-2018-0346
关键词
microfluidic paper-based device; spray painting; colorimetry; iron
资金
- National Natural Science Foundation of China [21804114]
- Natural Science Foundation of Hunan Province [2018JJ3500]
- Research Foundation for PhD of Xiangtan University [KZ08042]
- National Science and Technology Major Project [2016ZX05040-002]
A novel, simple, and low-cost spray painting technique has been developed for the fabrication of microfluidic paper-based devices. The devices that we developed utilize aerosol spray paint to build hydrophobic barriers and employ a hole puncher to obtain paper-based patterned layers and paper dots without using any specialized instruments (e.g., without a laser cutter). The entire manufacturing process is extremely simple, inexpensive, and rapid, which means that it can be applied broadly. Furthermore, the application of the device to iron detection was demonstrated. A linear relationship between the colour value and the iron concentration was observed from 0 to 0.02 g/L. The developed microfluidic paper-based device for iron detection exhibited a low detection limit (0.00090 g/L), good selectivity, and acceptable recovery.
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