Distribution of Manganese, Nickel, Zinc, Cadmium, and Arsenic in Sediments and in the Standard Elutriate.
Final rept. Jul 73-Aug 75,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
Pagination or Media Count:
Sequential, selective chemical extraction was used to separate estuarine Mobile Bay, Ala., freshwater Ashtabula, Ohio, and marine Bridgeport, Conn. sediments into the fractions 1 dissolved in sediment interstitial water 2 adsorbed on mineral surfaces 3 associated with hydrous iron and manganese oxides and hydroxides 4 associated with sediment organic matter and sulfides and 5 bound within the lattice of crystalline minerals and the interlayer positions of phyllosilicate clay minerals. Separate sediment extractions using the Elutriate Test were also conducted. Manganese, nickel, cadmium, zinc, and arsenic concentrations were determined in each extractant. Nickel, cadmium, zinc, and arsenic concentrations were highest in fractions 5, 4, and 3, respectively. Manganese concentration was highest in fraction 4 in sediments from Mobile Bay and Ashtabula and in fraction 5 in Bridgeport sediment.
- Civil Engineering