Fig. 4From: Significance of cadmium from artists’ paints to agricultural soil and the food chainCd concentration in phosphate rock in relation to phosphorus content (data from [50]). The concentrations in igneous rock (filled squares) are considerably lower than in sedimentary phosphate rock. Straight line at 20 mg Cd/kg P2O5 indicates a possible limit value for Cd in fertilizersBack to article page