Publication details
2D distribution mapping of Quantum Dots injected on chromatographic paper by various LIBS setups
| Authors | |
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| Year of publication | 2016 |
| Type | Conference abstract |
| MU Faculty or unit | |
| Citation | |
| Description | Nowadays, nanotechnologies and preparation of different types of nanoparticles is an emerging field. Quantum dots with their wide range of use (such as labeling and imaging of cancer cells) can be included among the most promising nanoparticles. For all applications the accurate detection of QDs is necessary in the way of qualitative and quantitative spatially resolved analysis. A number of publications regarding instrumental methods used for detection of nanoparticles distribution even in biological samples were already published, but all these methods are highly sophisticated, very expensive and time consuming. Therefore, regarding to its advantages compared to other analytical techniques, the Laser-Induced Breakdown Spectroscopy (LIBS) technique seems to be an adequate and fast alternative. LIBS is a promising alternative to fluorescence methods as it enables detection of both nonluminescent QDs and QDs whose luminescence is affected by external conditions, such as pH change or presence of other metal ions. In our study, the feasibility of QDs 2D distribution mapping on the substrate by LIBS was examined in connection with the separation possibilities; specially interaction QDs with metal cation Cu2+ and also the influence of different pH value of water soluble QDs were investigated. Results obtained from two different LIBS setups were compared and as reference method which showed the exact distribution of QDs on the substrate surface was used the fluorescence microscopy. |
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