Exposure to chromium dust from homes in a chromium surveillance project

Investigators used a Lioy-Weisel-Wainman sampler to analyze the chromium content in house-dust samples obtained from households near chromium waste sites in Hudson County, New Jersey. Chromium concentrations in dust (mu g/g)--indicative of non-background source contributions--were significantly higher in Jersey City homes than in control homes outside of Hudson County (228 and 111 mu g/g, respectively; p <.001). Chromium dust loadings on surfaces (ng/cm(2)), representing the amount of chromium available for contact and a direct measure of exposure potential, were also higher in Jersey City homes than in control homes (31 ng/cm(2) and 14 ng/cm(2), respectively; p =.008). Near some of the sites, investigators found elevated chromium dust loads more frequently in homes occupied by at least one household member who had elevated urine chromium, as determined in a separate screening project, than in homes occupied by members whose urine chromium was not elevated. Individuals with elevated urine chromium levels were found less frequently in homes in which good housekeeping practices were evident than in homes absent such practices.