Vergleichende Bestimmung von Cadmium in Blut mit vier verschiedenen Verfahren

Four methods for the determination of cadmium in blood are compared. In three methods the final step of determination takes place by furnace atomic absorption Spectrometry, in the fourth by anodic stripping voltammetry with a rotating glassy carbon electrode. The sample preparation requires different expense: In the first method a direct determination without matrix separation is accomplished, in the second the protein matrix is precipitated by nitric acid. In methods 3 and 4 the organic matrix is destroyed by an oxidizing digestion, followed in method 3 by an extraction step.