Abstract
It was recently found that typical Chromatographic carrier gases such as argon or nitrogen could be used in a modified flame photometric detector for general or selective determination of eluted molecules. The detector was powered not by a flame but by a radioactively stimulated, mild discharge. The luminescence arose from the second positive system of nitrogen (in argon), and various emissions from aroyl-containing molecules (in nitrogen).
This study describes experiments that take away not only the flame but also the discharge: The energy that produces the luminescence is derived solely from the beta decay of63Ni. Because of this low power input, the sensitivity of the present beta-driven photometric detector (β-PD) is limited to about 25 ppm of nitrogen (in argon), and to about 5 pg/s for benzaldehyde and other well-responding aroyl compounds (in nitrogen). In accordance with mechanisms postulated earlier, other types of molecules do not produce significant responses in the absence of an electrical field.
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References
M. Dressler,Selective Gas Chromatographic Detectors (J. Chromat. Lib., Vol. 36), Elsevier, Amsterdam, 1986.
Y.-Z. Tang, W. A. Aue,Mikrochim. Acta [Wien] 1987,II, 21.
Y.-Z. Tang, W. A. Aue,J. Chromat. 1987,409, 125.
Y.-Z. Tang,Doctoral Thesis, Dalhousie University, 1987.
Y.-Z. Tang, W. A. Aue,J. Chromat. 1987,409, 243.
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Tang, YZ., Aue, W.A. A photometric detector driven by beta radiation. Mikrochim Acta 92, 29–35 (1987). https://doi.org/10.1007/BF01201714
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DOI: https://doi.org/10.1007/BF01201714