The results in Table IV establish the strontium/calcium
relationship in flesh, bone and milk from the cow.
The differences
ome te
CRER-1068
observed are small, with no discrimination against strontium in
going from tissue to bone and a relatively small factor in the
process of lactation (average ~1.3).
The determinations of
strontium in flesh and bone are directly comparable as the same
carcasses were used for both samples (Table IV).
Milk samples
were taken from the national network and so cannot be directly
related to flesh and bone.
However, natural strontium levels in
milk (Table V) do not show much variation with locality, even though
rather large variations exist in the content of soils and plants
(4). Hence the meat/milk ratio would also be expected to be
similarly independent of locale and the ratio should permit the
calculation of strontium-90 in meat for dietary surveys.
|
In contrast to strontium, barium levels in flesh appear
considerably greater than expected in composite samples (Table IV).
The results for milled wheat products show a pattern
similar to that observed by Lee (7), in his study of the uptake
of strontium-90 by plants.
ae eneae ee eS
to be unrelated to those in bone and the fluctuations are |
The distrubition ofall three alkaline
earth elements is surprisingly similar, with the highest concentra-
addition, strontium/calcium, barium/calcium and barium/strontium
ratios are highest in bran and lowest in flour. Apparently,
factors which contribute to the concentration of calcium in the
outer layers of the kernel also operate for strontium and barium.
hrs
In
7s
tion in the bran and the lowest in the flour fraction.