Sedimentary coprostanol in Kaohsiung Harbour and the Tan-Shui Estuary, Taiwan

Coprostanol in sediments from Kaohsiung Harbour and the Tan-Shui Estuary has been analysed. In the Kaohsiung Harbour sediments, coprostanol has a concentration range between 0.58 and 128 μg g−1 dry wt with a mean of 20.8 μg g−1 dry wt; higher concentrations are found near the mouths of rivers. Moreover, a significant log-log correlation is found between total coprostanol concentration and oil hydrocarbon concentration (r=0.803∗). In Tan-Shui Estuary sediments, coprostanol ranges in concentration from 1.00 to 230 μg g−1 dry wt with an average of 63.5 μg g−1 dry wt; relatively high levels of coprostanol (> 10 μg g−1) with 5β5β+5α cholestanol ratios > 0.7 indicate positive sewage pollution. This probably results from an input from the sewage outfall, anoxicity, shallow water depths, inadequate tidal flushing, etc. Additionally, highly significant correlations have been found for coprostanol and cholesterol (r=0.986∗) and for cholestanol and cholesterol (r=0.981∗); these relationships are thought to be mediated predominantly by sediment micro-organisms in the reducing environment.

[1]  J. Readman,et al.  An Integrated Technique to Quantify Sewage, Oil and PAH Pollution in Estuarine and Coastal Environments , 1986 .

[2]  C. Headington,et al.  Infrared Spectrophotometric Determination of Oil and Phenols in Water , 1951 .

[3]  S. Karickhoff,et al.  SORPTION OF HYDROPHOBIC POLLUTANTS ON NATURAL SEDIMENTS , 1979 .

[4]  S. Gaskell,et al.  Rapid hydrogenation of sterols in a contemporary lacustrine sediment , 1975, Nature.

[5]  K. Pecher,et al.  Tracing faecal pollution by coprostanol and intestinal bacteria in an ice-covered finnish lake loaded with both industrial and domestic sewage , 1986, Water, Air, and Soil Pollution.

[6]  R. Ryhage,et al.  IDENTIFICATION AND QUANTIFICATION OF NEUTRAL FECAL STEROIDS BY GAS-LIQUID CHROMATOGRAPHY AND MASS SPECTROMETRY: STUDIES OF HUMAN EXCRETION DURING TWO DIETARY REGIMENS. , 1964, Journal of lipid research.

[7]  G. Eglinton,et al.  A faecal sterol survey in the Clyde Estuary , 1977 .

[8]  G. Nickless,et al.  Coprostanol in severn estuary sediments , 1980, Bulletin of Environmental Contamination and Toxicology.

[9]  T. Koyama,et al.  The occurrence of stanols in various living organisms and the behavior of sterols in contemporary sediments , 1977 .

[10]  M. I. Venkatesan,et al.  Sterols in ocean sediments: novel tracers to examine habitats of cetaceans, pinnipeds, penguins and humans , 1989 .

[11]  J. Grimalt,et al.  Assessment of fecal sterols and ketones as indicators of urban sewage inputs to coastal waters , 1990 .

[12]  P. Bartlett.  Degradation of coprostanol in an experimental system , 1987 .

[13]  E. Ruth,et al.  Coprostanols in Antarctic marine sediments: A biomarker for marine mammals and not human pollution☆ , 1986 .

[14]  J. Means,et al.  Sorption of polynuclear aromatic hydrocarbons by sediments and soils. , 1980, Environmental science & technology.

[15]  M. Nishimura.  5β-isomers of stanols and stanones as potential markers of sedimentary organic quality and depositional paleoenvironments , 1982 .

[16]  J. Ellis,et al.  The geochemistry of coprostanol in waters and surface sediments from Narragansett Bay , 1992 .

[17]  I. Kaplan,et al.  Sedimentary coprostanol as an index of sewage addition in Santa Monica Basin , 1990 .

[18]  R. Gagosian,et al.  Use of microbial enrichments for the study of the anaerobic degradation of cholesterol , 1981 .

[19]  E. Wulf,et al.  Coprostanol and bacterial indicators of faecal pollution in the Scheldt estuary , 1982, Bulletin of environmental contamination and toxicology.

[20]  M. Nishimura.  Geochemical characteristics of the high reduction zone of stenols in Suwa sediments and the environmental factors controlling the conversion of stenols into stanols , 1978 .

[21]  P. Hatcher,et al.  Sewage contamination in the New York Bight. Coprostanol as an indicator , 1979 .

[22]  G. Nickless,et al.  Effect of sewage treatment on faecal sterols , 1981 .

[23]  E. S. Vleet,et al.  Distribution of coprostanol, petroleum hydrocarbons, and chlorinated hydrocarbons in sediments from canals and coastal waters of Venice, Italy , 1988 .

[24]  L. Churchland,et al.  Variation in fecal pollution indicators through tidal cycles in the Fraser River estuary. , 1982, Canadian journal of microbiology.

[25]  Robert C. Brown,et al.  Sedimentary coprostanol and hydrocarbon distribution adjacent to a sewage outfall , 1984 .