8S on
3
1 tuna fish
were analysed,
Betermination of Radioactive nuclides in tuna fish
—
;
10-15 g of ashed sample
Add 20mg each of Cs", Ce>t, coe,
and results
The level of
ned is low,
gn°t and Cut as carriers.
with aqua regia.
extraction.
organs suggest
lay contaminated
Heat to dryness to expel oxides of
nitrogen, dissolve in dil. HCl and
saturate with Has.
© ship "Shoyo Morut,
1oactivity of the
: the possibili-
Y
Filt
_
es
,
Boil to drive off HoS, add Bro
water, add excessive Na.C0,., warm
and filter under suction.
1
Dissolve
the ppt in HCl and repeat the pptn.
procedure.
Filt
Acidify with HNO3 , and add ammonium
phosphomolyhbdate
he Samples,
he same manner
if
Ppt
stitute
Leach
Filtrate
ned in muscles
contents of the
then ashed in
Repeat the
nULrTZONt Ql distritnes: 1
a)
Miagrame 1.
Sho
.
Seetwere dtermined by this procedure.
Of gra an
Wet
Pye: Analytical procedure for radiosctive Cs, or,
Mend total rare earth elements is described in
Memi. With regard to muscles only °°sr and
Filt
Dissolve in NeOH soln., add KCl as
the carrier then add sodium dipicrylamminate.
}—
—
pt
Filt
Dissolve in methylisobutylketone,
extract with dil HCl soln., add
+he
‘NA
BeMethod of Analysis
In
rito CHIBA,
d
™
HoPtCl, to the HCl layer.
Ppt
Filt
Heat to dryness and weigh as CsoPtCl¢.
—5 Pe
19
Tune Fish