 Place an 0-5 g sample in a 250-ml beaker, add 25 ml of 1 : 1 hydrochloric acid, cover the beaker with a watch glass, and heat on a hot plate just below boiling until no more of the sample appears to dissolve.  Geological Survey Bulletin - الصفحة 121983عرض كامل - لمحة عن هذا الكتاب
 | U.S. Atomic Energy Commission. Laboratory, New Brunswick, N.J. - 1955 - عدد الصفحات: 68
...the sample to a 250-ml beaker. 3. Wet the sample with water. 4. Add 30 ml of nitric acid (1 to 1). 5. Cover the beaker with a watch glass and heat on a hot plate at low heat for 2 hours. 6. Add 12 ml of sulfuric acid (1 to 1) and continue heating on low heat for... | |
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