| Element |
ppm |
| Chlorine, Cl |
19,500 |
| Sodium, Na |
10,770 |
| Magnesium, Mg |
1,290 |
| Sulphur, S |
905 |
| Calcium, Ca |
412 |
| Potassium, K |
380 |
| Bromine, Br |
67 |
| Carbon, C |
28 |
| Nitrogen, N |
11.5 |
| Strontium, Sr |
8 |
| Oxygen, O |
6 |
| Boron, B |
4.4 |
| Silicon, Si |
2 |
| Fluorine, F |
1.3 |
| Argon, Ar |
0.43 |
| Lithium, Li |
0.18 |
| Rubidium, Rb |
0.12 |
| Phosphorus, P |
0.06 |
| Iodine, I |
0.06 |
| Barium, Ba |
0.02 |
| Molybdenium, Mo |
0.01 |
| Arsenic, As |
0.0037 |
| Uranium, U |
0.0032 |
| Vanadium, V |
0.0025 |
| Titanium, Ti |
0.001 |
| Zinc, Zn |
0.0005 |
| Nickel, Ni |
0.00048 |
| Aluminium, Al |
0.0004 |
| Cesium, Cs |
0.0004 |
| Chromium, Cr |
0.0003 |
| Antimony, Sb |
0.00024 |
| Krypton, Kr |
0.0002 |
| Selenium, Se |
0.0002 |
| Neon, Ne |
0.00012 |
| Manganese, Mn |
0.0001 |
| Cadmium, Cd |
0.0001 |
| Copper, Cu |
0.0001 |
| Tungsten, W |
0.0001 |
| Iron, Fe |
0.000055 |
| Xenon, Xe |
0.00005 |
| Zirconium, Zr |
0.00003 |
| Bismuth, Bi |
0.00002 |
| Niobium, Nb |
0.00001 |
| Thallium, Tl |
0.00001 |
| Thorium, Th |
0.00001 |
| Hafnium, Hf |
7 x 10-6 |
| Helium, He |
6.8 x 10-6 |
| Beryllium, Be |
5.6 x 10-6 |
| Germanium, Ge |
5 x 10-6 |
| Gold, Au |
4 x 10-6 |
| Rhenium, Re |
4 x 10-6 |
| Cobalt, Co |
3 x 10-6 |
| Lanthanum, La |
3 x 10-6 |
| Neodymium, Nd |
3 x 10-6 |
| Lead, Pb |
2 x 10-6 |
| Silver, Ag |
2 x 10-6 |
| Tantalum, Ta |
2 x 10-6 |
| Gallium, Ga |
2 x 10-6 |
| Yttrium, Y |
1.3 x 10-6 |
| Mercury, Hg |
1 x 10-6 |
| Cerium, Ce |
1 x 10-6 |
| Dysprosium, Dy |
9 x 10-7 |
| Erbium, Er |
8 x 10-7 |
| Ytterbium, Yb |
8 x 10-7 |
| Gadolinium, Gd |
7 x 10-7 |
| Praseodymium, Pr |
6 x 10-7 |
| Scandium, Sc |
6 x 10-7 |
| Tin, Sn |
6 x 10-7 |
| Holmium, Ho |
2 x 10-7 |
| Lutetium, Lu |
2 x 10-7 |
| Thulium, Tm |
2 x 10-7 |
| Indium, In |
1 x 10-7 |
| Trebium, Tb |
1 x 10-7 |
| Palladium, Pd |
5 x 10-8 |
| Samarium, Sm |
5 x 10-8 |
| Tellurium, Te |
1 x 10-8 |
| Europium, Eu |
1 x 10-8 |
| Radium, Ra |
7 x 10-11 |
| Protactinium, Pa |
5 x 10-11 |
| Radon, Rn |
6 x 10-16 |
|
