Anwendung von ionenaustauschverfahren zur bestimmung von spurenelementen in natürlichen wässern—VII: Kupfer

A method is described which makes it possible to separate ppM levels of copper from natural waters and complete the determination by atomic-absorption. The sample is made 0.1M in hydrochloric acid, filtered, treated with ascorbic acid and passed through Dowex 1 X8 (chloride form). The anionic copper(I) chloro-complex is sorbed and the copper separated from most other elements present. After elution with 1M nitric acid, the copper is determined by atomic absorption. The method has been used to determine copper concentrations in the range 10–39 ppM, in some Austrian waters.