| Element | Symbol | Atomic Number | Seawater Concentration Range | Approximate weight concentration* |
| Lithium | Li | 3 | 25 然 | 174 痢/L |
| Beryllium | Be | 4 | 4-30 pM | 270 pg/L |
| Boron | B | 5 | 0.42 mM | 4.5 mg/L |
| Carbon | C | 6 | 2-2.5 mM | 30 mg/L |
| Nitrogen | N | 7 | 0-45 然 | 630 痢/l |
| Fluorine | F | 9 | 68 然 | 1.3 mg/L |
| Sodium | Na | 11 | 468 mM | 10.8 g/L |
| Magnesium | Mg | 12 | 53.2 mM | 1.29 g/L |
| Aluminum | Al | 13 | 5-40 nM | 1.1 痢/L |
| Silicon | Si | 14 | 0-180 然 | 5 mg/L |
| Phosphorous | P | 15 | 0-3.2 然 | 99 痢/L |
| Sulfur | S | 16 | 28.2 mM | 900 mg/L |
| Chlorine | Cl | 17 | 546 mM | 19.4 g/L |
| Potassium | K | 19 | 10.2 mM | 398 mg/L |
| Calcium | Ca | 20 | 10.3 mM | 412 mg/L |
| Scandium | Sc | 21 | 8-20 pM | 900 pg/L |
| Titanium | Ti | 22 | few pM | 150 pg/L |
| Vanadium | V | 23 | 20-35 nM | 1.8 痢/L |
| Chromium | Cr | 24 | 2-5 nM | 260 ng/L |
| Manganese | Mn | 25 | 0.2-3 nM | 165 ng/L |
| Iron | Fe | 26 | 0.1-2.5 nM | 140 ng/L |
| Cobalt | Co | 27 | 0.01 - 0.1 nM | 6 ng/L |
| Nickel | Ni | 28 | 2-12 nM | 700 ng/L |
| Copper | Cu | 29 | 0.5-6 nM | 380 ng/L |
| Zinc | Zn | 30 | 0.05-9 nM | 590 ng/L |
| Gallium | Ga | 31 | 5-30 pM | 2 ng/L |
| Arsenic | As | 33 | 15-25 nM | 1.8 痢/L |
| Selenium | Se | 34 | 0.5-2.3 nM | 180 ng/L |
| Bromine | Br | 35 | 0.84 mM | 67 mg/L |
| Rubidium | Rb | 37 | 1.4 然 | 120 痢/L |
| Strontium | Sr | 38 | 90 然 | 7.9 mg/L |
| Yttrium | Y | 39 | 0.15 nM | 1.3 痢/L |
| Zirconium | Zr | 40 | 0.3 nM | 27 ng/L |
| Niobium | Nb | 41 | 50 pm | 4.7 ng/L |
| Molybdenum | Mo | 42 | 0.11 然 | 10.5 痢/L |
| Technetium | Tc | 43 | none stable | none stable |
| Ruthenium | Ru | 44 | ‹0.05 pM | ‹5 pg/L |
| Palladium | Pd | 46 | 0.2 pM | 21 pg/L |
| Silver | Ag | 47 | 0.5-35 pm | 3.8 ng/L |
| Cadmium | Cd | 48 | 0.001-1.1 nM | 124 ng/L |
| Indium | In | 49 | 1 pM | 115 pg/L |
| Tin | Sn | 50 | 1-12 pM | 1.4 ng/L |
| Antimony | Sb | 51 | 1.2 nM | 146 ng/L |
| Iodine | I | 53 | 0.2-0.5 uM | 64 痢/L |
| Cesium | Cs | 55 | 2.2 nM | 290 ng/L |
| Barium | Ba | 56 | 32-150 nM | 21 痢/L |
| Lanthanum | La | 57 | 13-37 pM | 5.1 ng/L |
| Cerium | Ce | 58 | 16-26 pM | 3.6 ng/L |
| Praseodymium | Pr | 59 | 4 pM | 560 pg/L |
| Neodymium | Nd | 60 | 12-25 pM | 3.6 ng/L |
| Samarium | Sm | 62 | 3-5 pM | 750 pg/L |
| Europium | Eu | 63 | 0.6 - 1 pM | 150 pg/L |
| Gadolinium | Gd | 64 | 3-7 pM | 1.1 ng/L |
| Terbium | Tb | 65 | 0.9 pM | 143 pg/L |
| Dysprosium | Dy | 66 | 5-6 pM | 975 pg/L |
| Holmium | Ho | 67 | 1.9 pM | 310 pg/L |
| Erbium | Er | 68 | 4-5 pM | 835 pg/L |
| Thulium | Tm | 69 | 0.8pM | 135 pg/L |
| Ytterbium | Yb | 70 | 3-5pM | 865 pg/L |
| Lutetium | Lu | 71 | 0.9 pM | 157 pg/L |
| Tungsten | W | 74 | 0.5 nM | 92 ng/L |
| Rhenium | Re | 75 | 14-30 pM | 5.6 pg/L |
| Iridium | Ir | 77 | 0.01 pM | 1.9 pg/L |
| Platinum | Pt | 78 | 0.5pM | 98 pg/L |
| Gold | Au | 79 | 0.1-0.2 pM | 39 pg/L |
| Mercury | Hg | 80 | 2-10 pM | 2 ng/L |
| Thallium | Tl | 81 | 60 pM | 12 ng/L |
| Lead | Pb | 82 | 5-175 pM | 36 ng/L |
| Bismuth | Bi | 83 | ‹0.015 - 0.24 pM | 50 pg/L |
| *This column uses the high end of the concentration range. | ||||