TABLE 3.

Concentrations of anthropogenic radionuclides in the muscle and

mantle of clams collected from the Northern Marshall Islands during 1978.

Radionuclide concentration (pCi/kg wet wt)?

Atoll and
island

Species

Tissue

Oo,

1370,

23854

23942405,

2a

<0.03

<0.06

606,

Likiep (L~50)

Hippopus hippopus Muscle <1.4

<0.9

<0.03

Likiep (L-31)

Tridacna squamosa

<0.7

<0.15

0.33 (37)

<0.05

<5

(50) <3

<0.04

0.18 (45)

<0.04

23 (14)

<1

<0.09

<0.2

<4

Mantle

Muscle

<1.4

Mantle

1.1

Taka (H-1)

Hippopus hippopus

Taka (H-4)

Hippopus hippopus Muscle

Muscle

Taka (H-4)

Tridacna gigas

Mantle

Hippopus hippopus

Ailinginae (C-24)

Tridacna squamosa

Ailinginae (C-24)

Hippopus hippopus

Wotho (M-17)

Bikar (D-1)

Hippopus hippopus
Hippopus hippopus

Hippopus hippopus

Bikar (D-1)

Tridacna crocea

Ailuk (lagoon)

Tridacna squamosa

Ailuk (A-11)

Tridacna crocea

Rongerik (G~1)

Tridacna gigas

2.2 (40) <0.3

<3

<2

<0.07

0.2 (50)

Mantle

<2

<2

<0.05

<2

<2

<0.09

Mantle

0.9 (50) <0.9

<5

--

Muscle

<1

<0.8

Mantle

<2

<1

Muscle
Mantle

Wotho (M~1)

<5

<0.03

Muscle
Mantle

Ailinginae (C-15)

0.9 (24) <2

1 (50)
<0.8

<0.3
<0.3

0.17 (40)

<0.09

<1.3

<0.03

<1.3

0.09 (80)

<0.07

<2

0.4 (34)

<0.3

<7

0.37 (27)

<0.09

<0.05

0.13 (37)

<0.4

4.5 (18)

<0.03

0.27

(35) 14 (21)

<0.09
<0.05

1.2 (29)

<5
<2

<«l

0.33 (34)

lost

<1

0.09 (50)

2 (10)

0.5 (25)

«1

0.19 (75)

0.39 (50)

<0.05

1.1 (11)

<0.2

<1

0.42 (37) 17 (25)

Muscle

<5

--

<0.01

0.09 (39)

0.1 (50)

Mantle

<0.7

<0.1

<0.12

0.24 .(75)

0.21 (50) <3

Muscle

<1.8

<0.5

<0.4

Mantle

<0.6

0.5 (60)

0.22 (70)

0.13 (60)

0.7 (70)

<3

0.28 (20)

0.1 (45)

<3

<2
<4

<0.4

Muscle

<1.2

<1

<0.02

0.1 (50)

Mantle

<1.3

<1.2

<0.02

0.19 (30)

Muscle

<2

9.1 (13) <0.09

Mantle

<0.7

0.5 (58) <0.02

All?

4 (40)

<0.7

& (60)_—<1.7

19

0.17 (16) 1.77 (16)

<0.07

<3

0.2 (80)

Muscle

0.05 (60)

<0.03

0.12 (30)

Mantle

ail?

2.6 (38) <0.07

<0.1

<3

0.5 (36)

0.34 (43)
<0.02

<3

0.38 (45) <3
<0.03

0.2 (30)

<0.2

0.4 (40)
<0.06

<3

<4

«3
<3
<3

Select target paragraph3