Physical Sciences and Mathematics Commons^™

Styrene Monomer Solubility In Artificial And Natural Seawaters Of The Lower Chesapeake Bay, Eric Joseph Miller

Chemistry & Biochemistry Theses & Dissertations

Used for making a variety of plastic products, styrene monomer is an aromatic hydrocarbon frequently shipped in bulk quantities through the Port of Hampton Roads, Virginia. Despite its common use around the world and its high aquatic toxicity, little research has been conducted on the chemical's aqueous solubility and reactions during a major spill. In this study, the solubility of styrene monomer was measured in artificial seawater and natural waters collected from four sites on the lower Chesapeake Bay and Elizabeth River. The samples represented a range of different water chemistries in terms of salinity (13.8 — 29.0%) and the …

Zinc Speculation And Ligand Fluxes In Chesapeake Bay And Elizabeth River Pore Waters, Duncan Glover Byers

Chemistry & Biochemistry Theses & Dissertations

Presented here are the first data on the vertical concentrations, complexation, speciation, and fluxes of total dissolved zinc and zinc complexing ligands, and zinc speciation in sediment pore waters in the Chesapeake Bay and Elizabeth River, Virginia.

Sediment pore waters were collected in mid and southern Chesapeake Bay in November 1997 and in the Elizabeth River (Pinner's Point) in March, April, and July 1998. Flux experiments were conducted in Elizabeth River sediment cores in April and July 1998. [TDZn] and zinc complexation were determined using differential pulse anodic stripping voltammetry at a hanging mercury drop electrode (DPASV-HMDE).

[TDZn] in the …

Concentrations, Complexation And Speciation Of Total Dissolved Zinc In The Chesapeake Bay, Charles William Henry Iii

Chemistry & Biochemistry Theses & Dissertations

This is the first research to examine the horizontal, vertical, and temporal variability of total dissolved zinc, organic complexation of zinc, and zinc speciation in the Chesapeake Bay. Filtered (0.45μm) surface and bottom water samples were taken along the salinity gradient of the Chesapeake Bay in October 1993, March 1995, July 1995, and October 1995. Analysis by Differential Pulse Anodic Stripping Voltammetry (DP ASV) indicated that total dissolved zinc concentrations in the Bay ranged from 2.9 ± 0.7nM to 38.8 ± 2nM. Total zinc was highest at the northern end of the Bay (low salinity), approximately 10 times lower at …