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oai:drum.lib.umd.edu:1903/184462017-06-13T10:37:01Zcom_1903_2216com_1903_1598com_1903_2col_1903_2748col_1903_3

Yonkos, Lance T Hartzell, Sharon Hartzell Digital Repository at the University of Maryland University of Maryland (College Park, Md.) Environmental Science and Technology 2016-06-22T06:24:16Z 2016-06-22T06:24:16Z 2016 https://doi.org/10.13016/M2220Z http://hdl.handle.net/1903/18446 The sediments of Bear Creek near Baltimore, Maryland demonstrate substantial toxicity to benthic organisms, and contain a complex mixture of organic and inorganic contaminants. The present study maps the spatial extent and depth profile of toxicity and contamination in Bear Creek, and explores correlations between heavy metals, organic contaminants, and toxic responses. Two novel analytical techniques – handheld XRF and an antibody-based PAH biosensor – were applied to samples from the site to quantify total metals and total PAHs in sediments. By comprehensively assessing toxicity in Bear Creek, the present study provides data to inform future risk assessments and management decisions relating for the site, while demonstrating the benefits of applying joint biological assays and chemical assessment methods to sediments with complex contaminant mixtures. en Toxicity and Contamination in Bear Creek Sediment: Spatial Analysis and Implications for Risk Assessment Thesis Environmental science Environmental management Environmental health Baltimore Harbor Bear Creek contaminants ecotoxicology toxicology open.access