Arsenic Dissolution from Waste Dumps Containing Marine Sediment

Distinct iron isotopic signatures and supply from marine sediment dissolution

Oceanic iron inputs must be traced and quantified to learn how they affect primary productivity and climate. Chemical reduction of iron in continental margin sediments provides a substantial dissolved flux to the oceans, which is isotopically lighter than the crust, and so may be distinguished in seawater from other sources, such as wind-blown dust. However, heavy iron isotopes measured in seaw...

Arsenic determination in marine sediment using ultrasound for sample preparation.

This work deals with As determination in marine sediment using ultrasound for sample preparation. It is shown that As can be quantitatively extracted from marine sediment using 20% (v/v) HCl and sonication. The slurry is centrifuged and the analyte is determined in the supernatant by hydride generation atomic absorption spectrometry (HG AAS). A flow injection (FI) system is employed for hydride...

Psychosocial impact of toxic chemical waste dumps.

On the basis of three years' intensive observation of the community and interactions at the Love Canal in Niagara Falls, NY, the present study addresses the psychosocial problem of creating and maintaining trust between the residents of an area contaminated by toxic waste materials and the government-sponsored scientific researchers and other health professionals who worked and studied there (t...

Field epidemiologic studies of populations exposed to waste dumps.

Epidemiologic studies are required for assessing health risks related to toxic waste exposure. Since the settings in which such studies must be performed are extremely diverse, epidemiologic approaches must be versatile. For any particular study, three fundamental requirements are to assess what toxic materials are present, understand how human exposure may occur, and objectively measure possib...

Dissolution Process Modeling for Recycling Different Metals from Solid Waste