Contamination of saltmarsh sediments and biota by CCA treated wood walkways

摘要: Sediments, marsh grasses, and ribbed mussels were collected under two CCA wood walkways (15 3 years old) 1, 3, 10 m out, in the high, middle low marshes. These sediments, samples from reference sites, analyzed for Cu, Cr, As by atomic absorption spectrophotometry. Metal concentrations highly elevated up to away. Dispersal of contaminants near old walkway was greatest marsh, less middle, least high corresponding periods tidal inundation. Accumulation generally marsh. Contamination much higher sediments new than one, but metals had not dispersed as far. patterns plants similar, contamination did disperse far greater vs walkway, despite differences sediment concentrations. In mussels, bioaccumulation seldom statistically significant, due largely small sample sizes.