Source Apportionment of Polycyclic Aromatic Hydrocarbons (PAHs) in Small Craft Harbor (SCH) Surficial Sediments in Nova Scotia, Canada

Overview

Journal Sci Total Environ

Date 2019 Jul 21

PMID 31325853

Citations 8

Authors

Emily Davis

Tony R Walker

Michelle Adams

Rob Willis

Gary A Norris

Ronald C Henry

Affiliations

Soon will be listed here.

Abstract

Multiple source apportionment approaches were employed to investigate PAH sources which contribute to small craft harbor (SCH) sediments in Nova Scotia (NS), Canada. A total of 580 sediment samples were analyzed using PAH diagnostic ratios, Unmix Optimum receptor modeling, and by assessment of the composition of the PAH profile. PAH diagnostic ratios suggest PAHs are primarily of pyrogenic (thermal) origin, while UnmixO modeling identifies four individual sources which best describe surficial sediments and suggests contributions from both pyrogenic and petrogenic origins. These include coal combustion, automobile exhaust, and biomass incineration. PAH profile assessment determined an overwhelming contribution of high molecular weight PAHs, which exhibited a strong correlation with total PAH concentrations.

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