Toxicity-directed fractionation of tannery wastewater using solid-phase extraction and luminescence inhibition in microtiter plates

O. Fiehn, L. Vigelahn, G. Kalnowski, T. Reemtsma, M. Jekel

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A four-step solid-phase extraction (SPE) method is presented for toxicity-directed fractionation of industrial wastewater. This fractionation procedure serves as a key step for identifying unknown organic toxicants in complex samples. Toxicity was determined as luminescence inhibition of Vibrio fischeri using microtiter plates. This method was compared to standard tests in glass cuvettes using both 37 standard chemicals and 24 wastewater fractions with EC50 values covering five orders of magnitude. Results of both methods correlated well. 22 tannery wastewater samples were sequentially extracted using C18e and polystyrene-divinylbenzene phases in combination with pH-changes. Final solid-phase filtrates showed low inhibition, so toxicity of inorganics could be neglected. Using 1/EC50 values, the SPE eluates showed clearly different toxicity patterns. Even in eluates of the fourth extraction step, high toxic effects could be observed. In several cases, luminescence inhibition was increasing at the anaerobic treatment step compared to the corresponding untreated samples. After aerobic treatment, toxicity of most wastewater fractions was greatly diminished. HPLC/DAD analyses of the wastewater fractions showed a fair separation concerning compound polarity. However, the samples were still too complex to identify single compounds responsible for the detected toxicity. Therefore, a further clean-up step accompanied with toxicity testing is needed.

Original languageEnglish (US)
Pages (from-to)11-16
Number of pages6
JournalActa Hydrochimica et Hydrobiologica
Volume25
Issue number1
StatePublished - Jan 1997
Externally publishedYes

Fingerprint

luminescence
Fractionation
solid phase extraction
Toxicity
wastewater
Luminescence
fractionation
Wastewater
toxicity
divinyl benzene
Vibrio fischeri
sampling
filtrates
polystyrenes
toxicity testing
toxic substances
Poisons
Polystyrenes
tanneries
extraction method

Keywords

  • Luminescence Inhibition
  • Polar Organics
  • Solid-phase Extraction
  • Toxicity
  • Wastewater

ASJC Scopus subject areas

  • Aquatic Science
  • Environmental Science(all)
  • Environmental Chemistry
  • Water Science and Technology

Cite this

Toxicity-directed fractionation of tannery wastewater using solid-phase extraction and luminescence inhibition in microtiter plates. / Fiehn, O.; Vigelahn, L.; Kalnowski, G.; Reemtsma, T.; Jekel, M.

In: Acta Hydrochimica et Hydrobiologica, Vol. 25, No. 1, 01.1997, p. 11-16.

Research output: Contribution to journalArticle

Fiehn, O. ; Vigelahn, L. ; Kalnowski, G. ; Reemtsma, T. ; Jekel, M. / Toxicity-directed fractionation of tannery wastewater using solid-phase extraction and luminescence inhibition in microtiter plates. In: Acta Hydrochimica et Hydrobiologica. 1997 ; Vol. 25, No. 1. pp. 11-16.
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