ELEMENT

MOLECULAR

PPM IN

MOLAR

WEIGHT

SEAWATER

CONCENTRATION

Chloride

35.4

18980

536.158 mM

Sodium

23

10561

459.174 mM

Magnesium

24.3

1272

52.346 mM

Sulfur

32

884

27.625 mM

Calcium

40

400

10.0 mM

Potassium

39.1

380

9.719 mM

Carbon(inorganic)

12

28

2.333 mM

Strontium

87.6

13

148 μM

Boron

10.8

4.6

426 μM

Silicon

28.1

4

142 μM

Carbon (organic)

12

3

25 μM

Aluminum

27

1.9

70 μM

Fluorine

19

1.4

74 μM

PPB

N as nitrate

14

700

50 μM

Nitrogen (organic)

14

200

14 μM

Rubidium

85

200

2.4 μM

Lithium

6.9

100

15 μM

P as Phosphate

31

100

3.2 μM

Copper

63.5

90

1.4 μM

Barium

137

50

370 nM

Iodine

126.9

50

390 nM

N as nitrite

14

50

3.6 μM

N as ammonia

14

50

3.6 μM

Arsenic

74.9

24

320 nM

Iron

55.8

20

360 nM

P as organic

31

16

520 nM

Zinc

65.4

14

210 nM

Manganese

54.9

10

180 nM

Lead

207.2

5

24 nM

Selenium

79

4

51 nM

Tin

118.7

3

25 nM

Cesium

132.9

2

15 nM

Molybdenum

95.9

2

21 nM

Uranium

238

1.6

6.7 nM

PPT

Gallium

69.7

500

7.2 nM

Nickel

58.7

500

8.5 nM

Thorium

232

500

2.2 nM

Cerium

140

400

2.9 nM

Vanadium

50.9

300

5.9 nM

Lanthanum

139.9

300

2.2 nM

Yttrium

88.9

300

3.4 nM

Mercury

200.6

300

1.5 nM

Silver

107.9

300

2.8 nM

Bismuth

209

200

960 pM

Cobalt

58.9

100

1.7 nM

Gold

197

8

40 pM