Table 5 SEM–EDS analysis results of different internal (I) and external (II) corrosion layers of two  copper samples (wt.%)
From: Atmospheric corrosion in the metal pool of Ali Qapu palace in Isfahan: an experimental study
Sample | Cu | O | Cl | Pb | As | Sn | Sb | Ag | S | Fe | Al | Zn | Bi | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AQ-01 | I | 88.38 | 7.31 | 0.13 | – | 0.42 | 0.55 | 0.58 | 0.37 | 0.19 | 0.42 | 0.35 | 0.81 | 0.49 |
I | 68.95 | 21.41 | 0.28 | 1.9 | 0.61 | 0.74 | 1.43 | 0.88 | 0.17 | 0.79 | 0.23 | 2.64 | – | |
II | 64.25 | 22.98 | 1.52 | – | 0.53 | 5.65 | 0.32 | 0.41 | 1.36 | 0.37 | – | 1.97 | – | |
AQ-02 | I | 80.01 | 12.06 | 1.04 | – | – | 5.04 | 0.21 | 0.14 | – | 0.29 | – | 1.21 | – |
I | 80.01 | 16.76 | 0.1 | – | – | 1.95 | – | 0.24 | – | 0.2 | – | 0.74 | – | |
I | 69.32 | 18.18 | 9.31 | – | – | 0.41 | 0.79 | 0.43 | 0.46 | 0.29 | 0.12 | 0.69 | – | |
II | 34.54 | 31.19 | 0.28 | 1.61 | 0.59 | 29.4 | – | 0.36 | – | 0.47 | 0.75 | 0.81 | – | |
II | 26.21 | 2.72 | 0.33 | – | 0.33 | 67.98 | – | 0.58 | 0.18 | 0.29 |  | 0.53 | 0.85 | |