of yttrium and cesium are concentrated in the plants.
In addition, experiments have been completed on a fift
ruthenium. The absorption of ruthenium from nutrient soluti
Kidney Bean plants was studied as a function of the rutheni
tration and of the acidity of the solution (pH). Observatiohs show
that the uptake of ruthenium is dependent upon, but not stri
airborne dust.
The method has direct application to industfial hygiene
preblems involving such measurements and should facilitate
tion.
Heretofore, the usual’ methods of sampling airborne q
heir solu-
required analysis of particle size by time-consuming and ta@dious microscopic observations, .The new technique involves collectioy
filters which are then dissolved in an organic solvent.
fe resultant
dust suspension is then analyzed turbidimetrically (in terg
concentration of the dust in the sample does not affect thé resultsof
the particle-size determination. The turbidimetric methodj gives good
accuracy and reproductibility of results.
Radiation Instruments Program
Fourth Tripartite Conference on Instrumentation
Preliminary arrangements have been made between the United States,
Canada, and the United Kingdom te hoid a tripartite confe¥ence on
instrumentation at Harwell, England, in May 195k.
On Oct#ber 15 at
Chalk River, Ontario a meeting will be held by the plannigfg committee
of representatives from AEC, Chalk River, and Harwell to fstablish an
agenda for the conference.
Items suggested in preliminary discussions for the sbring ccnference are pile instrumentation, chemical plant instrumentation, tranSistors as applied to nuclear instruments, problems in radiation dosimetry, and new circuit techniques. Specific topics of a [classified
nature will be Limited to previously established CommissJon-approved
items on instrumentation within the general areas of Health and Safety
(Area 2), Isotopes (Area 3), Extraction Chemistry (Area 9), and Low-
Power Reactors (Area 9).
;
- ARCHIVES