Abstract
THE extreme sensitivity of measurements of radioisotopes makes it possible to use the artificial radioelements as an aid in analytical chemistry. In our experiments we have used radioactive silver for making quantitative estimations of small amounts of chromium, vanadium or molybdenum present in steel or in various substances. Insoluble silver salts can be prepared by means of these elements. Previous investigations have shown that all these silver compounds are suitable for radioactive measurements, except silver vanadate, which gives no reproducible results. Therefore, we dissolve the silver meta-vanadate in boiling 50 per cent nitric acid, and silver is precipitated as chloride; the latter is filtered on a fritted glass filter, so giving directly a radioactive sample for counting. A Geiger–Müller tube (R.C.L. Chicago) with thin mica window is used for the radioactivity measurements.
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GOVAERTS, J., BARCIA-GOYANES, C. Radiochemical Determination of Chromium, Vanadium and Molybdenum by means of Radioactive Silver. Nature 168, 198 (1951). https://doi.org/10.1038/168198a0
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DOI: https://doi.org/10.1038/168198a0
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