BROOKHAVEN

NATIONAL

ASSOCIATED

IABOR,4TORY

UNIVERSITIES,

INC

Upton, Long Island New York 11973
410008
Safety & Environmental

(5~6) 282\
FTS 666/

Protection Division

R

August 8,

4250

1984

.

Dr. William Bair
Battelle Pacific Northwest Laboratories
Battelle Boulevard
99352
Richland, Washington
Dear Dr. Bair:
We are delighted that you have been asked to look at our Marshall Islands
It is preliminary
programs.
I am forwarding the information you requested.
and subject to further refinement.
The Bikini urine was collected at Kili Island.
Since this locution us
relatively unaffected by the testing program, contamination by dust was
unlikely.
The photon-electron rejecting alpha liquid scintillation spectroscopy
(PERALS) was developed by Jack McDowell at Oak Ridge National Laboratory
(ORNL). We used this system at Brookhaven National Laboratory (BNL; to
estimate Pu. The following is a brief outline of the proc ‘~re we used to
analyze che Bikini urine samples obtained two years after t’ne Bi’KiIIiZIS
evacuated Bikini Atoll. The samples were urine from males (see Table One) and
were composite
into a total of eleven liters. Ten liters were divided into
ten one-liter samples and five of these were analyzed by the PERALS method at
BNL . Another five were analyzed by the PERALS m ~~~;d and by elecro-deposition
techniques at ORNL. One liter was analyzed for
“ ‘he
virtually the same for all samples which were measured
for 536;;; ‘as
The BNL samples were usually analyzed in groups of four. Each ;roup
consisted of one chemical blank, one known standard sample and two ~rine
samples.
A chemical blank was used to measure background radioactivity in all
of the chemicals added. A stan$~~d sample consisted of the chemical blank to
which we added 20 to 50 fCi of
Pu. We used a standard sample to estimate
recovery and to reassure ourselves that the f~$~-energy p~ac of the standard
Pu
spectra corresponded to channels assigned to
●

Select target paragraph3