Abstract
OF the various methods suggested for the preparation of sulphuric acid suitable for use in nitrate estimations, the method of Atkins1 is perhaps the most suitable. There is, however, one disadvantage in this method, namely, the precipitation of sulphur if a slight excess of hydrogen sulphide is added. This not only takes a long time to settle, but also interferes with the estimation, often giving lower values due to the presence of traces of sulphur dioxide.
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Atkins, W. R. G., Nature, 129, 98 (1932).
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RAMACHANDRAN, B. Preparation of Nitrogen-free Sulphuric Acid. Nature 162, 450 (1948). https://doi.org/10.1038/162450a0
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DOI: https://doi.org/10.1038/162450a0
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