Increased chromium and nickel content in lung tissue

In random autopsies chromium (n=23) and nickel (n=16) together with various other metals, were determined in lung tissue by means of flameless atomic absorption spectrometry. With increasing age a significant increase in concentration of both chromium and nickel was found. This is evaluated as an indicator for a corresponding exposure, which is marked by a local (workplace) and regional (environment) share of a clear increase in the total chromium/nickel load and by a life-long duration. The question arises, whether the selective concentration (long half-life) of the inhaled chromium and nickel particles/compounds in the lung are to be regarded as a stochastic lung cancer risk.