@inproceedings{45dcca92ac0d46c8a0a5df01a5866e1c,
title = "Metal ion enrichment using organic nanocrystal coatedmicrofluidic paper analytical devices to achieve highly sensitive colorimetric detection",
abstract = "Low sensitivity is a common issue in the colorimetric of microfluidic paper analytical device (μPADs) for heavy metal ion detection. In this work, we demonstrated the utilization of insoluble organic nanocrystal (NCs) coated on μPADs both for reagent and sample enrichment. By applying a large volume of aqueous metal solution, NCs absorbed Fe2+ until it reached high capacity, leading to an obvious color change even at ppb-level. NCs coated-μPADs successfully detected 5.4 ppb (0.1 μM) of Fe2+ which meets the criteria to detect the ion in a reference river water sample (6.9 ppb), a sensitivity higher than other comparable sensing device.",
keywords = "Colorimetric, Organic Nanocrystal, Reagent Accumulation, Sample Accumulation, Sensitivity",
author = "Grasianto and Mao Fukuyama and Derrick Mott and Yoshitaka Koseki and Hitoshi Kasai and Akihide Hibara",
note = "Publisher Copyright: {\textcopyright} 2020 CBMS-0001; 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2020 ; Conference date: 04-10-2020 Through 09-10-2020",
year = "2020",
language = "English",
series = "MicroTAS 2020 - 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences",
publisher = "Chemical and Biological Microsystems Society",
pages = "567--568",
booktitle = "MicroTAS 2020 - 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences",
}