[Contamination of foods and feeding stuffs from selected areas of the Erfurt district with lead and cadmium. I. Determination of lead and cadmium in vegetable material by inverse voltammetry].
An inverse voltammetric method is used for determining the trace elements lead and cadmium in vegetable foods and feeding stuffs. The organic meterials are mineralized by nitric acid vapour and, in the second stage, with the addition of perchloric acid. The procedure is very sensitive and suited for routine work. The detection limits are: 0.66 ng/ml for lead, and 0.30 ng/ml for cadmium. The error of the method is: VPb = 20.5% and VCd = 28.6%. The respective recoveries of amounts of lead and cadmium added to the samples prior to digestion were: 102.0 +/- 10.8% and 101.6 +/- 11.4%.
D000821:Animal Feed / Q000032:analysis; D002104:Cadmium / Q000032:analysis*; D005504:Food Analysis; D005859:Germany, East; D007854:Lead / Q000032:analysis*; D008722:Methods; D014675:Vegetables / Q000032:analysis*
D002104:Cadmium; D007854:Lead
Untersuchungen zur Kontamination von Lebens- und Futtermitteln ausgewählter Gebiete des Bezirkes Erfurt mit Blei und Cadmium 1. Mitt. Bestimmung von Blei und Cadmium in pflanzlichem Material mittels Inversvoltammetrie.