ポーラログラフ法によるテラマイシンの定量法
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概要
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Quantitative determination of terramycin is made by colorimetric method with ferric chloride, spectrophotometric method or by microbiological method, but these methods require time and give larger allowable errors. In order to eliminate these effects, terramycin is converted into nitrosoterramycin by 100 % of its nitrosoation to make a product comparatively stable in <I>N</I> NH<SUB>4</SUB>OH-NH<SUB>4</SUB>Cl, under the condition of measurement, and gives a relation, id = K. C, and constant half-wave potential when the concentration range is 1 × 10<SUP>-5</SUP>2 × 10<SUP>-3</SUP> M/<I>l</I>. The nitrosoation of terramycin is carried out at room temperature with HCl and NaNO<SUB>2</SUB>, neutralized with NH<SUB>4</SUB>OH and its half-wave potential is determined in <I>N</I> NH<SUB>4</SUB>OH-NH<SUB>4</SUB>Cl.
- 社団法人 日本分析化学会の論文