METHOD AND APPARATUS FOR MEASURING CADMIUM IN FOOD

摘要

The purpose is to measure the concentration of cadmium in a food with high accuracy in a simple manner. A food which is to be measured on the cadmium concentration is weighed precisely and pulverized. The pulverized sample is subjected to an ashing treatment by strong heating. The resultant sample is mixed with an acid and the mixed solution is shaken. A residue is removed from the mixed solution to produce a solution, and the solution is subjected to an electrochemical measurement. The method for the electrochemical measurement to be employed is an anodic stripping voltammetry or the like. The working electrode to be used in the electrochemical measurement is a copper electrode or the like. The temperature to be employed for the ashing treatment by strong heating is equal to or higher than the melting point of zinc and equal to or lower than the boiling point of cadmium, and the solution to be subjected to the measurement is adjusted to pH 3.5 to 5.5.