Cadmium measuring method and measurement equipment in food

摘要

P To provide a simple method for precisely measuring a concentration of cadmium within foods. PSOLUTION: Foods of which cadmium concentration is measured are weighed and ground. Then and the ground sample is subjected to intense HEAT ashing treatment. The obtained sample is mixed with acid and is shaken. A residue is removed from the mixed liquid and solution obtained by removing the residue is subjected to electrochemical measurement. In the electrochemical measurement method and anodic stripping voltammetry or the like is used. For a working electrode for performing electrochemical measurement, copper electrodes and or the like are used. Temperature of the intense HEAT ashing treatment is set to not less than the melting point of zinc and not more than the boiling point of cadmium, and pH of solution supplied for measurement is adjusted to 3.5 to 5.5. PCOPYRIGHT: (C)2011 and JPO& INPIT