Micro x-ray fluorescence tomography on single sediment particles from newyork/new jersey harbor

摘要

Since routine dredging of the New York/New Jersey Harbor is required to allowaccess to modem deep-craft commercial shipping, large quantities of sediments must be removed from the harbor bottoms and subsequently dealt with. These sediments consist of a mixture of fine sand and silt, with some natural organic material. Toxic contaminants are ubiquitous, however. Next to organic contaminants (pesticides, industrial solvents, PCBS, dioxins, furans, PAHs), the sediments contain low concentrations of heavy metals (including Ag, Cd, Cr, Pb, Sb, Se, Tl, Be, As, Hg, and Zn).