From: Optical characteristics and photothermal conversion of natural iron oxide colloid
Element | Concentration (ppb) |
---|---|
Ti | 551,829 |
V | 2,384 |
Cr | 148,264 |
Ni | 9,030 |
Cu | 902,819 |
Zn | 33,141 |
As | 49,894 |
Rb | 17,418 |
Sr | 728,497 |
Y | 5,453 |
Zr | 13,756 |
Ag | 801 |
Ba | 107,025 |
Ce | 7,452 |
Pr | 815 |
Nd | 4,355 |
Sm | 716 |
Gd | 1,107 |
Dy | 616 |
Er | 380 |
Yb | 291 |
Pb | 156,200 |
Th | 1,724 |
U | 470 |