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Assessing Environmental Stress On The Loggerhead Sea Turtle (Caretta Caretta) In Virginia Waters, Sarah A. Bellmund
Assessing Environmental Stress On The Loggerhead Sea Turtle (Caretta Caretta) In Virginia Waters, Sarah A. Bellmund
Dissertations, Theses, and Masters Projects
No abstract provided.
Investigation Of Tributyltin: Water/Sediment Interactions, Michael A. Unger
Investigation Of Tributyltin: Water/Sediment Interactions, Michael A. Unger
Dissertations, Theses, and Masters Projects
Tributyltin (TBT) and its degradation products dibutyltin (DBT) and monobutyltin (MBT) have been quantitatively analyzed in environmental water samples using gas chromatography with flame photometric detection and gas chromatography/mass spectrometry (GC/MS). The butyltins were extracted from environmental samples with hexane/0.2% tropolone and derivatized with hexyl magnesium bromide to form hexylbutyltins. Full scanning GC/MS was used for confirmation of peak identifications and quantification was done by selective ion monitoring (methane chemical ionization) at m/z 319 (TBT) and m/z 347 (DBT, MBT and tripentyltin, the internal standard). Calibration curves were linear and detection limits were less than 2 ngL&\sp{lcub}-1{rcub}&. GC/MS and GC …
An Assessment Of Tributyltin Contamination In Sediments And Shellfish In The Chesapeake Bay, Francois A. Espourteille
An Assessment Of Tributyltin Contamination In Sediments And Shellfish In The Chesapeake Bay, Francois A. Espourteille
Dissertations, Theses, and Masters Projects
No abstract provided.
The Effects Of Salinity On Cadmium Toxicity To The Bay Mysid, Mysidopsis Bahia Molenock, Peter F. De Lisle
The Effects Of Salinity On Cadmium Toxicity To The Bay Mysid, Mysidopsis Bahia Molenock, Peter F. De Lisle
Dissertations, Theses, and Masters Projects
The effects of salinity on cadmium toxicity to the bay mysid, Mysidopsis bahia Molenock were studied in a series of experiments examining salinity tolerance, effect of salinity on intermolt period, osmoregulatory capacity, interaction of salinity with acute cadmium toxicity, role of changes in cadmium speciation, modification due to calcium antagonism and effects of cadmium on osmoregulatory ability. Upper and lower tolerance limits increased with increasing acclimation salinity. Intermolt duration decreased slightly with increasing salinity. Mysidopsis bahia osmoregulates at salinities from 5 to 37&\perthous& and exhibits an isosmotic point of 24&\perthous&. Hemolymph osmolality attained steady-state condition by 95 min post-transfer to …
Availability Of Lead, Zinc, Copper, And Cadmium To The Peregrine Falcon (Falco Peregrinus) From Waterfowl Of The Craney Island Disposal Area, Douglas Stephen Davis
Availability Of Lead, Zinc, Copper, And Cadmium To The Peregrine Falcon (Falco Peregrinus) From Waterfowl Of The Craney Island Disposal Area, Douglas Stephen Davis
Dissertations, Theses, and Masters Projects
No abstract provided.