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Application of CdSe quantum dots for the direct detection of TNT.
- Source :
-
Forensic Science International . Feb2016, Vol. 259, p101-105. 5p. - Publication Year :
- 2016
-
Abstract
- CdSe quantum dots were synthesized through a simple, green organic-phase method. Paraffin was used as the reaction solvent and a reducing agent, oleic acid was the reaction ligand, and oleyl amine was the stabilizer. Based on the phenomenon of TNT quenched oil-soluble CdSe quantum dot fluorescence, a simple, fast, and direct method of TNT detection was established. Under optimum conditions, the degree of fluorescence quenching of oil-soluble CdSe quantum dots had a good linear correlation with TNT concentration in the 1.0×10(-7)-5.0×10(-5) mol/L range, and the correlation coefficient was 0.9990. TNT detection limit was 2.1×10(-8)mol/L. The method was successfully used to determine TNT-explosion dust samples, results were satisfactory. The fluorescence quenching mechanism of oil-soluble CdSe quantum dots by TNT was also discussed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03790738
- Volume :
- 259
- Database :
- Academic Search Index
- Journal :
- Forensic Science International
- Publication Type :
- Academic Journal
- Accession number :
- 115559093
- Full Text :
- https://doi.org/10.1016/j.forsciint.2015.12.028