Element Weight % Atomic % Net Int. Error %
C 16.38 38.61 13.54 16.79
O 6.95 12.29 19.14 15.98
Cl 16.87 13.47 237.95 4.43
Cu 47.73 21.26 161.29 3.75
Zn 6.3 2.73 17.42 15.79
Table 3: Elemental analysis of brass surface in unpolluted 3.5% NaCl.