Interactions of Cd with Zn, Cu, Mn and Fe for lettuce (Lactuca sativa) in hydroponic culture.

The effect and accumulation of cadmium (Cd) in lettuce grown by means of the hydroponic technique was investigated by multivariate analysis, and was found to be affected by the concentration of other trace elements. Particularly iron acted in a strongly antagonistic way against Cd. Consequently, no absolute toxicity limits for Cd can be drawn without considering other trace elements. [ABSTRACT FROM AUTHOR]