Investigation of the drying conditions for amidosulfuric acid.

نویسندگان

  • Toshiaki Asakai
  • Ryota Minegishi
  • Norie Inaba
  • Yutaka Ishimura
  • Mariko Murayama
  • Tatsuhiko Tanaka
چکیده

The drying conditions for primary standards of volumetric analysis have a significant effect on the titration results due to changes in the purity, stability and homogeneity. Amidosulfuric acid, a strong acid used as a reference material for volumetric analysis in Japan, was dried in a vacuum desiccator or heated at different temperatures, and then measured by Karl-Fischer titration, thermogravimetry/mass spectroscopy (TG-MS), ion chromatography and coulometric titration. The optimum drying conditions were at 50 degrees C for 24 h with crushing.

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عنوان ژورنال:
  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

دوره 22 3  شماره 

صفحات  -

تاریخ انتشار 2006