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The residue fraction was analyzed following digestion with 72% sulphuric acid.
Depending on the results we also used combinations of dry heat, wet heat and sulphuric acid.
Seeds scarified by soaking in sulphuric acid (amount of time not given) germinated to 48%.
One could hypothesize the existence of microorganisms that can tolerate this level of sulphuric acid that have not yet been discovered.
This method uses a mixture of anhydrous acetic acid and sulphuric acid, which is heated to prepare pollen for examination under a light microscope.
There are a number of ways around the sulphuric acid problem.
A useful summary of the new topic of sulphuric acid cave genesis is included.
The residue fraction was analyzed following digestion with (72%) sulphuric acid.
Figure 1 compares the relative germination of seeds after soaking in concentrated sulphuric acid for progressively increasing durations.
Glycosphingolipids were visualized by spraying the plates with orcinol\sulphuric acid.
Oxidation of pyrites releases strong sulphuric acid resulting in the dissolution of arsenic-bearing minerals.
Rather, the entire endocarp appeared shiny and smooth following sulphuric acid soaking, because of the removal of the brachysclereids over the endocarp.
In all, there were 18 salts, and concentrated sulphuric acid was used for the lowest humidity (1%).
Suitable samples of leaves, stems and grains were powdered and digested with salt mixture and concentrated sulphuric acid in the electronic micro-block digestion system.
Concentration of sugar in each fraction of 400 xl was determined by the phenol sulphuric acid method.
