| Autor: |
Rui Kuang, Xuan Kuang, Siyi Pan, Xiaodong Zheng, Jiacai Duan, Yaqing Duan |
| Předmět: |
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| Zdroj: |
Microchimica Acta; Apr2010, Vol. 169 Issue 1/2, p109-115, 7p, 2 Charts, 6 Graphs |
| Abstrakt: |
Cadmium telluride quantum dots (QDs) were prepared and coated with cysteamine using ultrasonic irradiation. The QDs were characterized by fluorescence spectroscopy, UV-vis absorption spectra, X-ray diffraction and infrared spectroscopy. The QDs possess a quantum yield as high as 46% and a quite narrow emission band (full width at half maximum of 38 nm). The fluorescence of these QDs is quenched by bisphenol A (BPA), and quenching can be described by a Stern-Volmer equation with correlation coefficient of 0.998. These findings resulted in a simple and rapid technique for determination of BPA that was applied to its determination in feeding bottles. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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