Dispersal of Contaminants from Municipal Discharges as Evidenced from Sedimentary Records in a Great Lakes Coastal Wetland, Cootes Paradise, Ontario

Mayer, T.; Bennie, Donald T.; Rosa, F.; Palabrica, Virginia S.; Rekas, Gregory; Schachtschneider, JoAnne; Märvin, Chris H.

doi:10.3394/0380-1330(2008)34[544:docfmd]2.0.co;2

Cited by 14 publications

(11 citation statements)

References 3 publications

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“…Studies that employ sterols and sterol ratios as markers for tracing anthropogenic pollution have typically employed as the sample matrix: sediments/ sludge (Carreira et al 2004;Fattore et al 1996;Froehner et al 2009;Marvin et al 2001;Mayer et al 2008), feces/manure (Jardé et al 2007a; Leeming et al 1996), or filter/residue from filtration of water samples (Devane et al 2006;Gilpin et al 2003;Grimalt et al 1990;Jardé et al 2007b). The present study applied sterol analysis to the result of direct liquid-liquid extraction of STP influents and effluents, which are complex matrices, in order to characterize sterol composition and calculate sterol ratios for comparison with literature-based sterol ratio values.…”

mentioning

confidence: 99%

Sewage Treatment Plants Efficiencies in Removal of Sterols and Sterol Ratios as Indicators of Fecal Contamination Sources

Furtula

Liu

Chambers

et al. 2011

Water Air Soil Pollut

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This study assessed the efficiency of sewage treatment plants (STPs) in removing sterols based on chemical analyses of both influents and effluents. Samples from 3s and three tertiary plants were collected and analyzed by gas chromatography mass spectrometry for 23 individual sterols including mestranol, norethindrone, equol, estrone, equilin, norgestrel, 17α-ethinylestradiol, 17α-estradiol, 17β-24-ethylcoprostanol. The percentage of sterols remaining in effluent samples (compared to influent samples) ranged from 0% to 80% and varied among sterol compounds and with STP location and treatment type.Differences in the efficiency of sterol removal for secondary and tertiary STPs were statistically significant. Although the concentration of sterol compounds differed between influents and effluents, sterol abundances remained the same. The most abundant sterol detected was cholesterol, followed by the fecal sterol coprostanol, and the plant sterols 24-ethylcoprostanol and β-sitosterol. For three STPs, the hormone estrone was detected in effluents at concentrations of 0.03-0.05 μg L −1 . Ten sterol ratios specific for human fecal contamination and eight sterol ratios for differentiating among multiple sources of fecal contamination were calculated and showed that 12 ratios for influent and nine ratios for effluent were successful for human fecal source tracking. Based on sterol ratio values in this study, new criteria for identification of human fecal contamination were suggested.

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confidence: 99%

Sewage Treatment Plants Efficiencies in Removal of Sterols and Sterol Ratios as Indicators of Fecal Contamination Sources

Furtula

Liu

Chambers

et al. 2011

Water Air Soil Pollut

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“…Factors affecting compound removal were HRT, temperature and sun irradiation. In a coastal wetland in Lake Ontario, the concentration of alkylphenols, coprostanols and phosphorous were highest at inputs into the wetland and limited dispersal of the contaminants occurred in the wetland system (Mayer et al, 2008). Additionally, the levels of alkylphenols and phosphorous were positively correlated with coprostanols, which are sewage tracers.…”

Section: Advanced Oxidation Processes (Aopsmentioning

confidence: 98%

Emerging Pollutants

Wells¹,

Morse²,

Bell³

et al. 2009

Water Environment Research

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Reports of water quality research and management pertaining to emerging pollutants, either chemical or biological, for which discussion of occurrence surveys, fate investigations, treatment methodologies, modeling,, and/or toxicity/risk assessment appearing in the peer-reviewed literature during 2008, are presented. KEYWORDS: wastewater treatment, pharmaceutical and personal care products, endocrine disrupting compounds, toxicity, risk assessment, modeling doi:10.2175/106143009X1244556840085

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“…Although in most cases the discharge is rapidly diluted and transported away from estuaries and coasts, under certain conditions (e.g., low tide and strong winds toward land), effluent travels into estuarine habitats and/or the load is significant enough to result in ecologically relevant concentrations (Mayer et al, 2008). Although in most cases the discharge is rapidly diluted and transported away from estuaries and coasts, under certain conditions (e.g., low tide and strong winds toward land), effluent travels into estuarine habitats and/or the load is significant enough to result in ecologically relevant concentrations (Mayer et al, 2008).…”

Section: Discharges From Point Sourcesmentioning

confidence: 99%