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Chemical makeup of the human body



The average 70 kilogram adult is composed of the following chemical elements:

Element Percentage[1] Mass (kg)[2]
Oxygen 65 43
Carbon 18 16
Hydrogen 10 7
Nitrogen 3 1.8
Calcium 1.5 1.0
Phosphorus 1 0.780
Potassium 0.25 0.140
Sulfur 0.25 0.140
Chlorine 0.15 0.095
Sodium 0.15 0.100
Magnesium 0.05 0.019
Iron 0.006 0.0042
Fluorine 0.0037 0.0026
Zinc 0.0032 0.0023
Silicon 0.002 0.0010
Zirconium 0.0006 0.000001
Rubidium 0.00046 0.00068
Strontium 0.00046 0.00032
Bromine 0.00029 0.00026
Lead 0.00017 0.00012
Niobium 0.00016 0.0000015
Copper 0.0001 0.000072
Aluminum 0.000087 0.000060
Cadmium 0.000072 0.000050
Boron 0.000069 0.000018
Cerium 0.000040
Barium 0.000031 0.000022
Arsenic 0.000026 0.000007
Vanadium 0.000026 0.00000011
Tin 0.000024 0.000020
Mercury 0.000019 0.000006
Selenium 0.000019 0.000015
Manganese 0.000017 0.000012
Iodine 0.000016 0.000020
Gold 0.000014 0.0000002
Nickel 0.000014 0.000015
Molybdenum 0.000013 0.000005
Germanium 0.000005
Titanium 0.000013 0.000020
Tellurium 0.000012 0.0000007
Antimony 0.000011 0.000002
Lithium 0.0000031 0.000007
Chromium 0.0000024 0.000014
Cesium 0.0000021 0.000006
Cobalt 0.0000021 0.000003
Silver 0.000001 0.000002
Lanthanum 0.0000008
Gallium 0.0000007
Uranium 0.00000013 0.0000001
Beryllium 0.000000005 0.000000036
Radium 0.00000000000000001
Yttrium 0.0000006
Bismuth 0.0000005
Thallium 0.0000005
Indium 0.0000004
Scandium 0.0000002
Tantalum 0.0000002
Thorium 0.0000001
Samarium 0.000000050
Tungsten 0.000000020

References

  1. ^ Thomas J. Glover, comp., Pocket Ref, 3rd ed. (Littleton: Sequoia, 2003), p. 324 (LCCN 2002091021-), which in turn cites Geigy Scientific Tables, Ciba-Geigy Limited, Basel, Switzerland, 1984.
  2. ^ J. Emsley, The Elements, 3rd ed., Oxford: Clarendon Press, 1998.
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Chemical_makeup_of_the_human_body". A list of authors is available in Wikipedia.
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