Hydrolysis of 4-methylumbelliferyl-β-D-glucuronide in differing sample fractions of river waters and its implication for the detection of fecal pollution

A. H. Farnleitner*, L. Hocke, C. Beiwl, G. G. Kavka, R. L. Mach

*Korrespondierende:r Autor:in für diese Arbeit

Publikation: Beitrag in Fachzeitschrift (peer-reviewed)Artikel in Fachzeitschrift

36 Zitate (Scopus)

Abstract

The hydrolysis rate of 4-methylumbelliferyl-β-D-glucuronide (MUG-HR) was determined in unamended samples, filtered samples, and in corresponding buffer resuspended filter residues of various river waters of slight to excessive fecal pollution covering a four orders of magnitude range. Regression analysis of the log MUG-HR of the unamended water samples versus the log MUG-HR of the filter residues revealed a highly significant linear relationship (R2=0.94; p<0.001). The median of the MUG-HR of the filtrated water samples was about 10% the MUG-HR of the corresponding unamended water samples. If MUG-HR determinations were used as a surrogate for estimating fecal coliform contamination, both the MUG-HR of the unamended water samples and the MUG-HR of the filter residues would have been equally adequate techniques at river sites of higher fecal pollution levels. However, at river locations of decreased fecal pollution, MUG-HR determination of filter residues appeared to be the more sensitive technique in order to estimate fecal coliform concentrations.

OriginalspracheEnglisch
Seiten (von - bis)975-981
Seitenumfang7
FachzeitschriftWater Research
Jahrgang36
Ausgabenummer4
DOIs
PublikationsstatusVeröffentlicht - 2002
Extern publiziertJa

ASJC Scopus Sachgebiete

  • Gewässerkunde und -technologie
  • Ökologische Modellierung
  • Umweltverschmutzung
  • Abfallwirtschaft und -entsorgung
  • Environmental engineering
  • Tief- und Ingenieurbau

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