Material/Constituent elements of seawater

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Approximate composition of seawater by mass:

Seawater
Element  % mass
Oxygen 11px-Wikipedia_logo.jpg 85.7
Hydrogen 11px-Wikipedia_logo.jpg 10.8
Chlorine 11px-Wikipedia_logo.jpg 1.9
Sodium 11px-Wikipedia_logo.jpg 1.05
Magnesium 11px-Wikipedia_logo.jpg 0.14
Sulfur 11px-Wikipedia_logo.jpg 0.09
Calcium 11px-Wikipedia_logo.jpg 0.04
Potassium 11px-Wikipedia_logo.jpg 0.04
Others Trace

figures from [1]
Need to find a definitive source for these figures

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