Publication: A simple paper-based approach for arsenic determination in water using hydride generation coupled with mercaptosuccinic-acid capped CdTe quantum dots
1
0
Issued Date
2020
Resource Type
File Type
application/pdf
ISSN
17599660
Other identifier(s)
2-s2.0-85091053585
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Analytical Methods. Vol 12, No.21 (2020), p.2718-2726
Suggested Citation
Thepmanee O., Prapainop K., Noppha O., Rattanawimanwong N., Siangproh W., Chailapakul O., Songsrirote K. A simple paper-based approach for arsenic determination in water using hydride generation coupled with mercaptosuccinic-acid capped CdTe quantum dots. Analytical Methods. Vol 12, No.21 (2020), p.2718-2726. doi:10.1039/d0ay00273a Retrieved from: https://hdl.handle.net/20.500.14740/4527
Abstract
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.
Subject(s)
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
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