Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/11914
ชื่อเรื่อง: A simple paper-based approach for arsenic determination in water using hydride generation coupled with mercaptosuccinic-acid capped CdTe quantum dots
ผู้แต่ง: Thepmanee O.
Prapainop K.
Noppha O.
Rattanawimanwong N.
Siangproh W.
Chailapakul O.
Songsrirote K.
Keywords: Bottles
Cadmium telluride
Chemical detection
Fluorescence
Hydrides
II-VI semiconductors
Lead compounds
Nanocrystals
Paper
Arsenic determination
Fluorescent detection
Fluorescent emission
Fluorescent quenching
Hydride generation techniques
Hydride generations
Limit of quantitations
Mercaptosuccinic acids
Semiconductor quantum dots
วันที่เผยแพร่: 2020
บทคัดย่อ: This research aims to develop a simple paper-based device for arsenic detection in water samples where a hydride generation technique coupled with mercaptosuccinic acid-capped CdTe quantum dots (MSA-CdTe QDs) as a detection probe was applied to the detection system. MSA-CdTe QDs were coated on a paper strip, inserted into the cover cap of a reaction bottle, to react with the developed arsine gas. Fluorescent emission of the QDs was quenched upon the presence of arsenic in solutions, whereby only a small amount of the MSA-CdTe QDs was required. The excitation and emission wavelengths for fluorescent detection were 278.5 nm and 548.5 nm, respectively. The proposed system provided a limit of detection of 0.016 mg L-1 and a limit of quantitation of 0.053 mg L-1, and a detection range of 0.05-30.00 mg L-1. In addition, the tolerance level of the detection approach to interference by other vapor-generated species was successfully improved by placing another paper strip coated with a solution of saturated lead acetate in front of the detection paper strip. This developed approach offered a simple and fast, yet accurate and selective detection of arsenic contaminated in water samples. In addition, the mechanism of fluorescent quenching was also proposed. © 2020 The Royal Society of Chemistry.
URI: https://ir.swu.ac.th/jspui/handle/123456789/11914
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091053585&doi=10.1039%2fd0ay00273a&partnerID=40&md5=f81fb4ea6fce2dbafedd131ac3ce30bf
ISSN: 17599660
Appears in Collections:Scopus 1983-2021

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