Images (2)
Document
| id |
id
75723907
|
|---|---|
| contentType |
contentType
document
|
| source |
source
import
|
Source image fields (6)
Extracted text
OCR Page 1 of 2March 6th,1929.
Dr. Herman Schlundt,
University of Missouri,
Columbia, Mo.
Dear Dr. Schlundt:
We have completed the examination
of the standard radium solution which you submitted to
us and I beg to herewith report the following resulta:
By boiling the solution with nitric
acid and de-emanating, and then again by collecting the
emonation for teuting by boiling we obtained 1.36 -
1.46 and 1.38 X 10-8 as the quantity of radium contained
in 20 ce of the stock solution C.
When the solution is
de-emanated by the bubbling of air through same, and again
collecting the carnation for test by drawing air thpough
we obtained 1.26 - 1.34 x 10-8 grans of redium per 20 co
of stock solution C.
It, ,therefore, aupears that this
solution has changed little from the initial falue when
the emanation is collected by the nitric acid method, but
there is a slight loss involved when collected by bubbling.
On Dr. Fialla's semple we find by
the nitric acid method 2.5 x 10-8 grams of radium per cc,
and by bubbling air through the solution 2.6 X 10-8.
Dr. Fialia's value was 3.1 = 10-8.
Sincerely yours,
Vice President.
HHBarker: RH
Relations
belongs_to
belongs_to