Object & Metod
Preparation of sample of birch leaves for
Selected birch leaves had been dried with the limited sunbeam hit before
the laboratorial samples were created. After that the sample was divided
into two parts. The first part had being dried in desiccator till moisture
completely removed. That part was called a clean leaf. The second part
had left without changes. This part was called a dirty leaf. Then dried
leaves were cut into very small parts about 1 mm with the pair of scissors.
The six sample’s masses of 5 grammas were taken from the material
of the sample after cutting and another mass was left without changes.
And the others were being grinded with spirits into the agnatic mortar
during 5, 10, 15, 20 and 30 minutes accordingly.
The radiators were prepared by pills’ pressing at a substrate
of boron acid in a special press-form.
Two grammas of materials were taken for 1 pill. So from each sample
mass 2 pill-radiators were gotten. After that Co-lines of Zn and Mn
activity was measured from each pill.