Determination of arsenic in copper and copper-base alloys

Abstract

Existing procedures for determining arsenic in copper and its alloys have known limitations and disadvantages, especially when less than about 100 p.p.m. of arsenic are present and a 5-g sample is not available.

Towards a deeper understanding of the third millennium BC Iranian metallurgy: Use of synchrotron light for characterizing arsenic‐bearing minerals in metal objects from Espidej

“…Arsenic loss from the solid‐state condition in the alloy can be observed only under oxidizing conditions throughout a complete metal oxidation 26 . However, under oxidation conditions, the alloy exposed exhibits noticeable inverse segregation, in which the surface in some cases has a much higher arsenic content than the interior 26,61 . Cu 3 As is more stable (resistant) to corrosion than Cu (alpha) of the Cu–As system.…”

“…26 However, under oxidation conditions, the alloy exposed exhibits noticeable inverse segregation, in which the surface in some cases has a much higher arsenic content than the interior. 26,61 Cu 3 As is more stable (resistant) to corrosion than Cu (alpha) of the Cu-As system. Consequently, high concentration cuprite can be detected near the exterior area of samples, which were associated also with oxidized and inversed arsenic segregation.…”