A Survey of Superfund Chemicals in Massachusetts Farms
Name
Riedinger_krieding_SM_CEE_2022.pdf
Description
Thesis PDF
Size
21.59 MB
Format
Adobe PDF
Checksum (MD5)
7c394db8237f6980fc34f5b0cd4a7774
Author(s)
Riedinger, Kristen A.
Advisor(s)
Plata, Desirée
Date Issued
September 2022
Publisher
Massachusetts Institute of Technology
Abstract
Heavy metals and organic pollutants in the environment can present a public health threat, and understanding how different pollutants are distributed in our agricultural resources and in the food chain is fundamental to predicting and preventing their negative health impacts. The purpose of this study was to measure the concentrations of 22 inorganic elements (including arsenic and lead) and 334 organic compounds (including polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), and volatile organic compounds (VOCs)) in water, soil and produce samples from organic farms in Massachusetts, USA. Measured concentrations were compared to regional and federal limits where applicable; few exceedances of these limits were found. Comparisons of compound levels across water, soil, and produce at individual sites displayed no significant patterns (i.e., correlations related to fundamental partitioning between media). Lastly, a distance analysis showed little indication that detected compounds migrated from nearby EPA Superfund sites. Theses results indicate that there is no systemic contamination associated with transport between historic EPA Superfund sites and contemporary organic farms in Massachusetts. The low concentrations of these elements found in this study suggest little health risk from locally grown produce.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
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