The Environmental Significance of Sediment Surface Area as a Controlling Factor in the Preservation of Polychlorinated Dibenzo-P-Dioxins and Dibenzofurans (PCDD/PCDF) in Sediments Adjacent to Woodfibre Pulp Mill, Howe Sound, British Columbia

Autor:	Gareth Chalmers, Rupert Adams, Amanda Bustin, Marc Bustin
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	woodfibre pulp mill organic matter dioxins furans surface area preservation Mineralogy QE351-399.2
Zdroj:	Minerals, Vol 9, Iss 11, p 711 (2019)
Druh dokumentu:	article
ISSN:	2075-163X
DOI:	10.3390/min9110711
Popis:	A sediment core was retrieved from an area adjacent to a Pulp and Paper Mill in Howe Sound, British Columbia, in order to examine the accumulation dioxins (PCDDs) and furans (PCDFs). Downcore distribution of TOC in the bulk samples is relatively uniform (0.5−1.7 wt. %). Bulk PCDD/F concentration shows selective enrichment and depletion at specific sediment horizons, and a low to moderate correlation with surface area (r2 = 0.23−0.54). TOC in size fractionated sediments ranges from 0.3−11 wt. % and shows a moderate correlation with surface area (r2 = 0.51). The relationship between PCDD/Fs and surface area is congener specific, ranging from no significant correlation (TCDD; r2 = 0.05), to a good correlation (i.e., OCDF; r2 = 0.74). Results indicate that both dioxin and furan concentrations are related to organic matter concentration, molecular chlorination and sediment surface area.
Databáze:	Directory of Open Access Journals
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