Analytical sample drying method and drying apparatus

Details Analytical sample drying method and drying apparatus Analytical sample drying method and drying apparatus

2011-08-23

2011-08-23

Raevis, Robert R (Department: 2856)

Measuring and testing

Sampler, sample handling, etc.

Reexamination Certificate

active

08001854

ABSTRACT:
A soil for metal analysis having a high water content of 40% or more is dried up to 20% or less in water content within a short period of time.A filter paper5is laid over an inner bottom surface plate2of a nutsche1. Powder of a super absorbent polymer6is uniformly spread (filled) on an upper surface thereof. Further, another filter paper7is laid thereon. A soil sample with a high water content is packed on an upper surface thereof, thereupon carrying out predrying to approximately 30% in water content. After that, the predried soil sample is added with ethanol, stirred and received in a receiving pan38. The receiving pan38is arranged in a drying chamber37. Water is supplied by a syringe43to a reaction vessel42having been filled with calcium oxide or barium oxide, thereby reacting calcium oxide or barium oxide with water. The receiving pan38is heated by a reaction heat generated at that moment, thereupon carrying out postdrying to make the water content 20% or less.

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