SYMBOLS
UNITS
AND
EQUIVALENTS
UNITS OF RADIOACTIVITY
Ch we we CUTTE
nu oe ce oe te oe oe we Sef X 107° disintegrations per second
mCi .. .. millicurie .. .. 107? Curies
pCi .. ee picocurie
.. «. 10-1% curies .. ..
2.22 disintegrations per minute
UNITS OF LENGTH, AREA, VOLUME AND MASS
AND THEIR EQUIVALENTS IN THE IMPERIAL SYSTEM
CMje+ + oe ce en oe
km... os oe ee oe es
centimetre .. «2 «2 «« 0.394 inches
square kilometre .. .. 0.386 square miles
litre .. .. .. ee ee
litre
m? ae
te se
oe oe oe
Zone ve we ce ce oe)
cubic metre...
oe
«+
«+ 35.31 cubic feet
«ee ee oe oe oe 0.880 quart
BTAM oe ce oe oe op oe 0.0353 ounce
NOTES
1.
Unless otherwise noted, all times given in this report are New Zealand
Standard time i.e. G.M.T. + 12 hours.
26
Radioactive fallout in rain is expressed as:
(a)
Deposition
-
millicuries per square kilometre (mca/xm*)
(b)
Concentration
-
picocuries per litre
Concentration (pCi/litre) =
Multiply mCi/km™
3.
2
deposition (mci/xm” )
rainfall (cm)
| (pci/litre)
x 100
by 2.59 to obtain mCi/sq. mile.
The levels of strontium-90 contamination in food and bone are
given in "Strontium Units"
of
calcium
eer
ccc
crcce
cc
ac
i.e. picocuries strontium-90 per gram
eee
e
re
eceseseccecssesesss Pur
Sr
/g
Ca.
Similarly caesium-137 results are given as picocuries of caesium-137
per
gram
of
POTASSLUM. cocecccccevesercesesessevessse pel
One litre of whole milk contains approximately:
1.2 g of calciun
1.4 g¢ of potassium.
TLi
=
3
C3137 /g
K.