Distribution of fecal sterols in surface sediment of Sungai Tebrau, Johor

N. Nordin, Masni Mohd. Ali

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Decreasing quality of aquatic environments may harm human health in general. Sewage pollution from human and animal excretions is a major cause of environmental quality depletion. This study investigates the distribution of sewage contamination level in twenty surface sediment samples taken from Sungai Tebrau, Johor. Four principal fecal sterols have been identified and were found in all sediment samples, which are coprostanol, cholesterol, epicoprostanol and also cholestanol. Cholesterol as the major sterol and most abundant compound derived from a variety of sources ranged from 32.92 to 1,100.55 ngg-1 dry weights. Meanwhile, major fecal sterol, coprostanol has the lowest quantity of total sterol in all samples, constituting only 13% of total sterol. It ranged from 12.63 to 565.42 ngg-1 dry weights, but only two stations (ST12 and ST14) are sewage contaminated. Squatters and residential areas are a major contributor of poorly treated sewage into the aquatic environment. Coprostanol concentration alone is not reliable to indicate sewage contamination; diagnostic indices enhance reliability of sterols as a marker for sewage contamination. Indices applied in this study are coprostanol/ cholesterol, coprostanol/(coprostanol+cholestanol) and also epicoprostanol/ coprostanol. Resultsof coprostanol/cholesterol, coprostanol/ (coprostanol+cholestanol) indices supported the findings that both ST12 and ST14 samples are contaminated with sewage. All samples consist of relativelyhigh concentration of epicoprostanol and high ratio value of epicoprostanol/ coprostanol. Generally, it can be concluded that these sampling sites are not contaminated with sewage even though fecal sterols were detected in all samples as they were found to be at low concentration.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages460-465
Number of pages6
Volume1571
DOIs
Publication statusPublished - 2013
Event2013 UKM Faculty of Science and Technology Post-Graduate Colloquium - Selangor
Duration: 3 Jul 20134 Jul 2013

Other

Other2013 UKM Faculty of Science and Technology Post-Graduate Colloquium
CitySelangor
Period3/7/134/7/13

Fingerprint

sewage
sediments
cholesterol
contamination
environmental quality
residential areas
excretion
pollution
markers
health
animals
low concentrations
depletion
stations
sampling
causes

Keywords

  • Coprostanol
  • Sewage contamination
  • Sterol

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Distribution of fecal sterols in surface sediment of Sungai Tebrau, Johor. / Nordin, N.; Mohd. Ali, Masni.

AIP Conference Proceedings. Vol. 1571 2013. p. 460-465.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nordin, N & Mohd. Ali, M 2013, Distribution of fecal sterols in surface sediment of Sungai Tebrau, Johor. in AIP Conference Proceedings. vol. 1571, pp. 460-465, 2013 UKM Faculty of Science and Technology Post-Graduate Colloquium, Selangor, 3/7/13. https://doi.org/10.1063/1.4858698
Nordin, N. ; Mohd. Ali, Masni. / Distribution of fecal sterols in surface sediment of Sungai Tebrau, Johor. AIP Conference Proceedings. Vol. 1571 2013. pp. 460-465
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