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Element

Element Abundances in Ocean Water

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Oxygen

8.56×105 ppm

Hydrogen

1.078×105 ppm

Chlorine

1.987×104 ppm

Sodium

1.105×104 ppm

Magnesium

1.326×103 ppm

Sulfur

928 ppm      

Potassium

416 ppm      

Bromine

 68 ppm      

Carbon

 28 ppm      

Strontium

  8.5 ppm    

Boron

  4.5 ppm    

Calcium

  4.22 ppm   

Fluorine

  1.4 ppm    

Silicon

  1 ppm      

Nitrogen

  0.5 ppm    

Argon

  0.45 ppm   

Lithium

  0.18 ppm   

Rubidium

  0.12 ppm   

Phosphorus

  0.07 ppm   

Iodine

  0.06 ppm   

Barium

  0.03 ppm   

Molybdenum

  0.01 ppm   

Aluminum

  0.005 ppm  

Zinc

  0.005 ppm  

Uranium

  0.0033 ppm 

Iron

  0.003 ppm  

Copper

  0.003 ppm  

Arsenic

  0.0023 ppm 

Manganese

  0.002 ppm  

Nickel

  0.002 ppm  

Vanadium

  0.0015 ppm 

Titanium

  0.001 ppm  

Chromium

  0.0006 ppm 

Cesium

  0.0005 ppm 

Selenium

  0.00045 ppm

Krypton

  0.00021 ppm

Antimony

  0.0002 ppm 

Neon

  0.00012 ppm

Tungsten

  0.00012 ppm

Silver

  0.0001 ppm 

Cobalt

8×10-5 ppm

Germanium

6×10-5 ppm

Cadmium

5×10-5 ppm

Gold

5×10-5 ppm

Mercury

5×10-5 ppm

Gallium

3×10-5 ppm

Lead

3×10-5 ppm

Tantalum

2×10-5 ppm

Bismuth

2×10-5 ppm

Yttrium

1.3×10-5 ppm

Tin

1×10-5 ppm

Helium

7.2×10-6 ppm

Hafnium

7×10-6 ppm

Xenon

5×10-6 ppm

Lanthanum

3.4×10-6 ppm

Neodymium

2.8×10-6 ppm

Zirconium

2.6×10-6 ppm

Scandium

1.5×10-6 ppm

Cerium

1.2×10-6 ppm

Niobium

1×10-6 ppm

Rhenium

1×10-6 ppm

Thallium

1×10-6 ppm

Dysprosium

9.1×10-7 ppm

Erbium

9×10-7 ppm

Ytterbium

8×10-7 ppm

Ruthenium

7×10-7 ppm

Gadolinium

7×10-7 ppm

Beryllium

6×10-7 ppm

Praseodymium

6×10-7 ppm

Samarium

4.5×10-7 ppm

Holmium

2×10-7 ppm

Thulium

2×10-7 ppm

Lutetium

1.5×10-7 ppm

Terbium

1.4×10-7 ppm

Europium

1.3×10-7 ppm

Indium

1×10-7 ppm

Thorium

4×10-8 ppm

Radium

1×10-10 ppm

Polonium

2×10-14 ppm

Radon

6×10-16 ppm

Protactinium

2×10-19 ppm

Element

Abundances by Element Name in Ocean Water

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Aluminum

  0.005 ppm  

Antimony

  0.0002 ppm 

Argon

  0.45 ppm   

Arsenic

  0.0023 ppm 

Barium

  0.03 ppm   

Beryllium

6×10-7 ppm

Bismuth

2×10-5 ppm

Boron

  4.5 ppm    

Bromine

 68 ppm      

Cadmium

5×10-5 ppm

Calcium

  4.22 ppm   

Carbon

 28 ppm      

Cerium

1.2×10-6 ppm

Cesium

  0.0005 ppm 

Chlorine

1.987×104 ppm

Chromium

  0.0006 ppm 

Cobalt

8×10-5 ppm

Copper

  0.003 ppm  

Dysprosium

9.1×10-7 ppm

Erbium

9×10-7 ppm

Europium

1.3×10-7 ppm

Fluorine

  1.4 ppm    

Gadolinium

7×10-7 ppm

Gallium

3×10-5 ppm

Germanium

6×10-5 ppm

Gold

5×10-5 ppm

Hafnium

7×10-6 ppm

Helium

7.2×10-6 ppm

Holmium

2×10-7 ppm

Hydrogen

1.078×105 ppm

Indium

1×10-7 ppm

Iodine

  0.06 ppm   

Iron

  0.003 ppm  

Krypton

  0.00021 ppm

Lanthanum

3.4×10-6 ppm

Lead

3×10-5 ppm

Lithium

  0.18 ppm   

Lutetium

1.5×10-7 ppm

Magnesium

1.326×103 ppm

Manganese

  0.002 ppm  

Mercury

5×10-5 ppm

Molybdenum

  0.01 ppm   

Neodymium

2.8×10-6 ppm

Neon

  0.00012 ppm

Nickel

  0.002 ppm  

Niobium

1×10-6 ppm

Nitrogen

  0.5 ppm    

Oxygen

8.56×105 ppm

Phosphorus

  0.07 ppm   

Polonium

2×10-14 ppm

Potassium

416 ppm      

Praseodymium

6×10-7 ppm

Protactinium

2×10-19 ppm

Radium

1×10-10 ppm

Radon

6×10-16 ppm

Rhenium

1×10-6 ppm

Rubidium

  0.12 ppm   

Ruthenium

7×10-7 ppm

Samarium

4.5×10-7 ppm

Scandium

1.5×10-6 ppm

Selenium

  0.00045 ppm

Silicon

  1 ppm      

Silver

  0.0001 ppm 

Sodium

1.105×104 ppm

Strontium

  8.5 ppm    

Sulfur

928 ppm      

Tantalum

2×10-5 ppm

Terbium

1.4×10-7 ppm

Thallium

1×10-6 ppm

Thorium

4×10-8 ppm

Thulium

2×10-7 ppm

Tin

1×10-5 ppm

Titanium

  0.001 ppm  

Tungsten

  0.00012 ppm

Uranium

  0.0033 ppm 

Vanadium

  0.0015 ppm 

Xenon

5×10-6 ppm

Ytterbium

8×10-7 ppm

Yttrium

1.3×10-5 ppm

Zinc

  0.005 ppm  

Zirconium

2.6×10-6 ppm

References    (Click the button next to a value above to see complete citation information for that entry)

Huheey, James E., Ellen A. Keiter, and Richard L Keiter. Inorganic Chemistry: Principles of Structure and Reactivity, 4th edition. New York: HarperCollins College Publishers, 1993.

Lide, David R., editor. CRC Handbook of Chemistry and Physics, 88th edition. Boca Raton, Florida: Taylor & Francis Group, 2008.