CHAKRAVARTI AND HELD
Table 4. Radioisotopes (disintegrations per minute per gram) in rations from Rongelap
Island (dry-weight basis).
is).
~oniple
60
“9
WB
28
459
A
2.82
B65
38.9
371
Oe 0485
760
0814
22
277
95
152
138
WW
22
17
12.
8
.
4
—
1
223.
18
7.38
t
3.8
22.7
974
O11 = 0.16
—~0.23 +0.09
—0.19 +010
—).21 +011
—-).003 + 0.13
3.6
16.1
20.0
3.0
2.6
0.21
D065
0.86
0.22
0.32
Vay
WIZE = 6 IS
+ O45
+ 0.30
+ 0.35
+ 0.41
+ 0.36
42
860777
HAG AOE G
=
2
+
+
+
0.09
0.6
0.08
0.05
0.08
RESULTS AND DISCUSSION
Mratein mitrogen was determined by the Kjelein
0.399:
0.027
32
362
3
Follewing the same principle, Joyner and
‘hakravarti (1960) suggested techniques that were
ipplied to these samples.
1.30
).080
:
rhe thou,
Fat was determined by a modification of the
Juhason method (Winton and Winton, 1945).
Methylene chloride was the extracting solvent.
eS
OF ee
30073
Ash content was determined as the nitrate form
by drying an aliquot of the ashed sample to constant weight,
Moisture content was calculated from the wetseight co dry-weight ratio.
Total carbohydrate and like substances were esti-
75
77
0.28
0.29
0.38
0.17
0.21
Table 1 lists the components of the 24-lr
food rations collected at Rongelap Island.
Tables 2 and 3 show proximate composition
and trace-element content of the rations, and
Tables + and 5 present levels of radioiso-
a Hcl
0.214
ee
=
=
=
+
+
‘aay added untif a precipitate furmed, and an excess
of NIGH was then added during constant. stircng. The precipitate, magnesium ammonium phos-
1) and are selectively eluted at different molarities
335
45
Te eR
made basic with LV NHLOH; 5% (NH,)2POv
shown that the chloride complexes of the transitiotial elements nickel through zine are adsorbed
onto a strongly basic anion-exchange resin (Dowex
222,
i4
2
“U.Y¥5 ccunting evror.
metrically by methods described by Sandell (1959).
Fhe clements were initially separated by selective
elution of their chloride complexes from an anionexchange. resin. Kraus and Moore (1953) have
1275 OND. #3
3.
9.67
170
0.87
2.50
0.05
22
13
14
.15
16
olution against a standard EDTA solution using
‘se indicator Eriochrome Black T.
Portal phosphorus was determined by the colorisetric method of Fleischer et al. (1958).
9
L.
YA3
0.90
0.36
1.20
0.33
Phe transition cements nickel, manganese, cosalt, copper, iron, and zinc were determined colori-
485.0
05
0.84 + 0.07
1.63 + 0.16
1.25 + 0.25
aiuin was determined by titrating an aliquot of this
2.
10
9
si
61.4 = 0.00
14.1 + 0.50
21.1 + 0.87
&
+
2
+
&
T1ySt
phate, was allowed to settle overnight, removed by
tiltering, dissolved in 6 drops of concentrated
t{.8e),, and made to volume with water. Magne-
2
28
a."
2
9
\
raat
0.04 = 0.09
0.11 + 0.20
0.49 +0.39
> Negative values are given to indicate that there are errors in addition to the counting
error which cannot be specifically accounted for.
823 0.102
3
2
3
0
7
A
Zov
0.40 + 0.29
—1.03 + 0.53"
—2.40 + 1.0
Won te
:
4
ye
0.35 + 12°
0.52 + .25
0.12 + 52
wted by subtracting moisture, fat, protein, and
ny
strom the total solids and calculating the carcydrate content by difference.
[53
topes. Results are given on a percentage or
unit weight basis (Tables 2 and +) and as
amount for total diet (Tables 3 and $). The
former basis permits comparison of the
relative composition of individual rations
and facilitates evaluation of the contributions
made by specific items in each diet; the
latter basis shows the actual amounts con-
sumed in a 24-hr period.
In evaluating the chemical constituents
consumed byan individual in a 24-hr period,
the gross weight of the total diet is of much
importance. By comparing the proximate
chemical composition on a percentage basis
with the published chemical composition of
some of the items constituting the samples,
it is possible to account for the variation in
moisture. fat, protein, carbohydrate and ash
content of the different diets.
Since information on the nutritional as-
pects of the Rongelapese diet is limited, comparison of the data with data for other areas
is probably not meaningful. The gross percentage composition indicates that the diets
are generally lowin fat, protein, and ash but
fairly high in carbohydrate content.
When the data in Table 3 are compared
with the recommended daily dietary allowances published by the Food and Nutrition
3oard of the National Research Council, the
ee rate aati et
3
I
2
3