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Determination of Cadmium in Pure Zirconium by Inductively Coupled Plasma-Atomic Emission Spectroscopy

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Zirconium materials are important and high purity is required in many fields of technology. The maximum allowable impurity concentration in nuclear grade zirconium is <100 μg/g for most elements, but <0.4 μg/g of cadmium is essential owing to its large neutron capture cross section. Cadmium in zirconium has been determined routinely by numerous techniques including emission spectroscopy. Dithizone-methylisobutylketone (MIBK), dithizone-chloroform, and sodium diethyl dithiocarbamate-chloroform were used to separate and concentrate cadmium in high-purity zirconium. Solvent extraction with ammonium pyrrolidine dithiocarbamate (APDC) is widely used for a variety of materials, because it allows a multi-element analysis of a single extract over a wide pH range. Back extraction from APDC-MIBK is seldom applied.

Keywords: Cadmium; Inductively coupled plasma; Solvent extraction; Zirconium

Document Type: Short Communication


Affiliations: 1: Department of Chemistry, GRC Tower, University of Massachusetts, Amherst, Massachusetts 01003-0035; present address: Guangzhou Non-Ferrous Metal Institute, Guangzhou, People's Republic of China 2: Department of Chemistry, GRC Tower, University of Massachusetts, Amherst, Massachusetts 01003-0035

Publication date: March 1, 1984

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