David Long

We study interactions of among elements (including trace and heavy metals) and dissolved organic compounds in surface environments (e.g., wetlands, rivers, lakes, groundwater); working to understand both the natural and human induced changes in water chemistry using stable isotopes, multivariate statistics, and geochemical modeling; quantifying the influences of human activities on environmental systems using sediment chronologies; and relating knowledge learned from the above studies to evaluate the influences of the environment on human health through exposure analysis.