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Sulfamate in environmental waters.

D R Van Stempvoort1, J Spoelstra2, S J Brown1

  • 1Watershed Hydrology and Ecology Research Division, Environment and Climate Change Canada, 867 Lakeshore Road, Burlington, Ontario L7S 1A1, Canada.

The Science of the Total Environment
|August 19, 2019
PubMed
Summary
This summary is machine-generated.

Sulfamate, an industrial chemical, is widespread in environmental waters across Ontario, Canada, including precipitation and streams. Its presence suggests atmospheric deposition and land-based sources, with degradation occurring in low-oxygen conditions.

Keywords:
GroundwaterIon chromatographySulfamateSulfamic acidSurface waterWastewater tracer

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Area of Science:

  • Environmental Chemistry
  • Water Quality Analysis
  • Environmental Monitoring

Background:

  • Sulfamate (the anion of sulfamic acid) has industrial applications but its environmental occurrence and fate are largely unknown.
  • Limited data exists on sulfamate distribution in natural water systems.

Purpose of the Study:

  • To investigate the occurrence and distribution of sulfamate in various environmental waters in Ontario, Canada.
  • To explore potential sources and degradation pathways of sulfamate in aquatic environments.

Main Methods:

  • Analysis of sulfamate concentrations in bulk precipitation, streams, lake water, and groundwater samples.
  • Assessment of spatial and temporal variations in sulfamate levels.
  • Correlation of sulfamate concentrations with environmental parameters like dissolved oxygen.

Main Results:

  • Sulfamate was widely detected in environmental waters, with concentrations up to 128,000 ng/L.
  • Consistently detected in precipitation and streams, frequently in lake water, and often in groundwater.
  • Variations suggest both atmospheric deposition and land-based anthropogenic sources are significant.

Conclusions:

  • Sulfamate is broadly distributed in Ontario's environmental waters.
  • Degradation of sulfamate may occur under suboxic or anoxic conditions.
  • Its widespread presence limits its utility as a specific wastewater tracer.