SAMPLE | O (w%) | Na (w%) | Mg (w%) | Al (w%) | Si (w%) | P (w%) | S (w%) | Cl (w%) | K (w%) | Ca (w%) | Mn (w%) | Fe (w%) | Zn (w%) |
Scaling 4 | 27.9 | 1.1 | 0.5 | 0.2 | 0.7 | ND | 1.5 | 2.2 | 0.3 | 5.2 | ND | 60.3 | ND |
Newly cut surface | ND | ND | ND | ND | 0.3 | ND | ND | ND | ND | ND | 1.4 | 98.3 | ND |
Exposed inner tubing | 36.2 | ND | 2.6 | 1.6 | 6.4 | 0.3 | 2.0 | 2.0 | 1.0 | 2.6 | ND | 43.9 | 1.4 |