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Article

Development of Colorimetric and Ratiometric Fluorescence Membranes for Detection of Nitrate in the Presence of Aluminum-Containing Compounds

1
School of Chemical Engineering and Research Center for Biophotonics, Chonnam National University, Yong-Bong Ro 77, Gwangju 61186, Korea
2
AquaTech Co., Ltd. 13 Yeongtong-ro 525 beon-gil, Yeongtong-Gu, Suwon 16706, Korea
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(9), 2883; https://doi.org/10.3390/s18092883
Received: 18 July 2018 / Revised: 21 August 2018 / Accepted: 29 August 2018 / Published: 31 August 2018
(This article belongs to the Special Issue Colorimetric and Fluorescent Sensors 2018)
In this study, a quantitative analysis of nitrate in aqueous solution was performed through the combination of an oxazine170 perchlorate–ethyl cellulose (O17-EC) membrane with aluminum-containing compounds. Aluminum of Devarda’s alloy (DA) or a clay hydrotalcite (HT) was employed for the reduction of nitrate to produce ammonia, and the produced ammonia was detected by the O17-EC membrane. The method of combining the O17-EC membrane with aluminum compounds has showed a broad detection range of nitrate. That is, the DA was combined with the O17-EC membrane and showed the linear nitrate detection ranges of 1–10 mM and 10–100 mM, while the O17-EC membrane immobilized with the clay HT showed a linear detection range of 0.1–1 mM nitrate. The visual color transition of the nitrate-sensing membranes at different nitrate concentrations was clearly observed under sunlight or irradiation of a light-emitting diode (LED) at an excitation wavelength of 470 nm (LED470). View Full-Text
Keywords: oxazine–ethyl cellulose membrane; Devarda’s alloy; clay hydrotalcite; Nitrate detection; colorimetric and ratiometric fluorescence detection oxazine–ethyl cellulose membrane; Devarda’s alloy; clay hydrotalcite; Nitrate detection; colorimetric and ratiometric fluorescence detection
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MDPI and ACS Style

Duong, H.D.; Kim, H.L.; Rhee, J.I. Development of Colorimetric and Ratiometric Fluorescence Membranes for Detection of Nitrate in the Presence of Aluminum-Containing Compounds. Sensors 2018, 18, 2883. https://doi.org/10.3390/s18092883

AMA Style

Duong HD, Kim HL, Rhee JI. Development of Colorimetric and Ratiometric Fluorescence Membranes for Detection of Nitrate in the Presence of Aluminum-Containing Compounds. Sensors. 2018; 18(9):2883. https://doi.org/10.3390/s18092883

Chicago/Turabian Style

Duong, Hong Dinh, Han Lae Kim, and Jong Il Rhee. 2018. "Development of Colorimetric and Ratiometric Fluorescence Membranes for Detection of Nitrate in the Presence of Aluminum-Containing Compounds" Sensors 18, no. 9: 2883. https://doi.org/10.3390/s18092883

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