University of Illinois Urbana-Champaign

Routine water monitoring test for mutagenic compounds

Johnston, James B.; Herren, James N.

Content Files
JohnstonHerron_1979.pdf

Permalink

https://hdl.handle.net/2142/90267

Description

Title
Routine water monitoring test for mutagenic compounds
Author(s)
  • Johnston, James B.
  • Herren, James N.
Contributor(s)
University of Illinois at Urbana-Champaign
Issue Date
1979-05
Keyword(s)
  • Water resource development
  • Water resource development--Illinois
  • Public health
  • Mutagens
  • Ames assay
  • Parfait/distillation method
  • Potable water
  • Surface waters
Date of Ingest
2016-06-13T14:56:21Z
Geographic Coverage
Illinois (state)
Abstract
We have developed a simple, relatively comprehensive method for the recovery of nonvolatile mutagenic compounds from surface waters. The method recovers compounds by sequential passage of the water sample through a silica gel bed (to mechanically filter the sample and to adsorb water-insoluble compounds such as polynuclear aromatic hydrocarbons), then a cation-exchange bed (to adsorb cationic and amphoteric compounds), and then an anion-exchange bed-all contained in a single multi-bed column of glass and teflon, the parfait column. Nonvolatile compounds not adsorbed to any of these beds (i.e., neutral, water soluble compounds) were recovered following concentration of the column effluent by vacuum distillation at < 30˚. The beds of the parfait column were separated and eluted independently. Water-soluble ionic compounds were eluted with 2 M triethylammonium carbonate, and hydrophobic compounds were eluted with acetone. Under vacuum, the acetone or the components of the triethylammonium carbonate buffer (triethylamine and C02) were removed, leaving the nonvolatile components of the water sample in the residue. Acetone residues were taken up in dimethylsulfoxide; the others were taken up S n water. Using the Ames Salmonella/microsome reversion assay, each residue was assayed for mutagenic activity. The method was evaluated by recovery of five known mutagens, benzo(a)pyrene, 4-nitroquinoline-1-oxide, ethidium bromide, nitrofurylfuramide, and sodium azide, each initially spiked into a sample of laboratory deionized water and an environmental water sample to a final concentration of less than 3 ppb. Recoveries were calculated from the mutagenic activity observed in the extracts, in comparison to the activity in parallel extracts of an unspiked water sample. Under these conditions, the parfait/distillation method was able to recover detectable mutagenic activity with three of the five mutagens tested. The method has been used to survey ten Illinois surface waters for naturally occurring mutagenic activity. Samples from two sites, the Fox River at Aurora, Illinois, and the Salt Fork Creek at Urbana, Illinois, showed significant mutagenic activity. The parfait distillation method differs from other techniques for the recovery of waterborne mutagens in its emphasis on the recovery of nonvolatile compounds and neutral water-soluble compounds. This method has a1 so detected significant mutagenic activity in samples as small as 2 gallons of water, a volume consumed by a normal person every few days. This study represents the first step in the development of a routine method for the assay of mutagens in drinking water and drinking water supplies. The results of this study and the strong correlation of mutagenic activity to carcinogenic potential raises the possibility that compounds present in surface waters may pose a chronic threat to the public's health.
Publisher
University of Illinois at Urbana-Champaign. Water Resources Center
Type of Resource
text
Genre of Resource
Report (Grant or Annual)
Language
en
Permalink
http://hdl.handle.net/2142/90267
Sponsor(s)/Grant Number(s)
  • U.S. Department of the Interior
  • U.S. Geological Survey
Copyright and License Information
Copyright 1979 held by James B. Johnston, James N. Herron

Owning Collections

Illinois Water Resources Center - Public Health PRIMARY