Effect of sewage treatment on faecal sterols

McCalley, David V.; Cooke, Michael; Nickless, G.

doi:10.1016/0043-1354(81)90211-6

Cited by 133 publications

(97 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Epicoprostanol, another "faecal" sterol, is present in small amounts in human faeces but can also be produced in anoxic environments such as sewage sludge (MCCALLEY et al, 1981;MUDGE and LINTERN, 1999). It can be used in association with coprostanol as an indicator of the treatment level of the sewage because it is formed during the anaerobic treatment of wastewater (MUDGE and DUCE, 2005).…”

Section: Discussionmentioning

confidence: 99%

Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparison

et al. 2015

View full text Add to dashboard Cite

Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparisonSituated opposite the Freshwater Front, Montevideo city with its more than 1.5 million inhabitants encircles Montevideo Bay, where one of the most active and polluted harbors in South America is located. Faecal sterols, trace metals, organochlorine compounds and petroleum derivatives in the sediments of Montevideo Harbor were evaluated and their spatial distribution inside the harbor as well as in the input of two main tributary streams analyzed. Specifically for the harbor sites, a temporal comparison of metal and hydrocarbons was made with previous measurements taken 12 years ago. Clear changes were observed at these sites. The concentration of metals such as Pb, Cr and Zn have diminished, while aliphatic hydrocarbons have increased their values at almost all of the stations studied. Differences were observed between summer and winter suggesting sedimentation, input or hydrodynamic changes in the area. These results help one to understand the present situation and develop the management measures needed to improve the environmental quality of the harbor and bay. AbstrAct

show abstract

Section: Discussionmentioning

confidence: 99%

Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparison

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The second ratio is the epicoprostanol : coprostanol ratio proposed by Mudge and Seguel (1999), in order to illustrate the level of treatment undergone by wastewaters. The higher the ratio, the more treated the waters are, as epicoprostanol is only present in traces in primary sludge, while it is present in much higher quantities in treated sludge (McCalley et al, 1981). Both ratios are represented in Fig.…”

Section: -Sterolsmentioning

confidence: 99%

“…Coprostanol (5β(H)-cholestan-3β-ol) is a stanol that arises from the anaerobic microbial degradation of cholesterol in the digestive tracts of higher land mammals, including man (Martin et al, 1973). Epicoprostanol (5β(H)-cholestan-3α-ol) is not a major sterol in human faeces, but it is often used as an indicator of sewage treatment (McCalley et al, 1981):…”

Section: -Sterolsmentioning

confidence: 99%

Seasonal survey of the composition and degradation state of particulate organic matter in the Rhône River using lipid tracers

et al. 2015

View full text Add to dashboard Cite

Abstract. Lipid tracers including fatty acids, hydroxyacids, n-alkanols, sterols and triterpenoids were used to determine the origin and fate of suspended particulate organic matter (POM) collected in the Rhône River (France). This seasonal survey (April 2011 to May 2013) revealed a yearround strong terrestrial higher-plant contribution to the particulate organic matter (POM), with significant algal inputs observed in March and attributed to phytoplanktonic blooms likely dominated by diatoms. Major terrigenous contributors to our samples are gymnosperms, and more precisely their roots and stems, as evidenced by the presence of high proportions of ω-hydroxydocosanoic acid (a suberin biomarker). The high amounts of coprostanol detected clearly show that the Rhône River is significantly affected by sewage waters.Specific sterol degradation products were quantified and used to assess the part of biotic and abiotic degradation of POM within the river. Higher-plant-derived organic matter appears to be mainly affected by photo-oxidation and autoxidation (free radical oxidation), while organic matter of mammal or human origin, evidenced by the presence of coprostanol, is clearly more prone to bacterial degradation. Despite the involvement of an intense autoxidation-inducing homolytic cleavage of peroxy bonds, a significant proportion of hydroperoxides is still intact in higher plant debris. These compounds could affect the degradation of terrestrial material by inducing an intense autoxidation upon its arrival at sea.

show abstract

“…10 Por exemplo, os esterois são ubíquos em animais, plantas e algas, sendo que os compostos com 27 e 28 átomos de carbono são indicadores consistentes de biomassa zoo-e fitoplanctônica, enquanto compostos com 29 átomos de carbono geralmente indicam biomassa de vegetais superiores, embora também possam ocorrer em determinadas espécies fitoplanctônicas. 9,11,12 O coprostanol, por sua vez, é um esterol formado no sistema digestivo de mamíferos a partir do colesterol e é eliminado nas fezes desses animais, 13 e por este motivo é amplamente utilizado para avaliar aporte de esgotos domésticos para ambientes aquáticos. [14][15][16] Já os alcoóis de cadeias longas (entre 22 e 32 átomos de carbono) são indicadores específicos de aportes de vegetação terrestre, devido à presença desses compostos nas ceras epicuticulares de vegetais superiores.…”

Section: Introductionunclassified

Fontes e distribuição de matéria orgânica sedimentar no complexo estuarino-lagunar de Mundaú-Manguaba/AL, utilizando esterois e alcoóis como indicadores

Ribeiro¹,

Knoppers²,

Carreira³

2011

Quím. Nova

View full text Add to dashboard Cite

Effect of sewage treatment on faecal sterols

Cited by 133 publications

References 8 publications

Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparison

Integrated assessment of contaminants and monitoring of an urbanized temperate harbor (Montevideo, Uruguay): a 12-year comparison

Seasonal survey of the composition and degradation state of particulate organic matter in the Rhône River using lipid tracers

Fontes e distribuição de matéria orgânica sedimentar no complexo estuarino-lagunar de Mundaú-Manguaba/AL, utilizando esterois e alcoóis como indicadores

Contact Info

Product

Resources

About