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Related Experiment Videos

Determination of MTBE in a recreational harbor using solid-phase microextraction.

Joseph L Zuccarello1, Jane A Ganske, David B Green

  • 1Department of Chemistry, Pepperdine University, 24255 Pacific Coast Highway, 90263, Malibu, CA, USA.

Chemosphere
|April 2, 2003
PubMed
Summary

Methyl tert-butyl ether (MTBE) contaminates coastal waters, with recreational boating identified as the primary source in Marina del Rey harbor. This study quantifies MTBE levels in seawater, revealing significant concentrations near boat launch areas.

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Area of Science:

  • Environmental Chemistry
  • Marine Science
  • Analytical Chemistry

Background:

  • Methyl tert-butyl ether (MTBE) is a fuel additive found in various water bodies.
  • Limited data exists on MTBE contamination in coastal waters and its marine persistence.
  • Understanding MTBE's presence in harbors is crucial for assessing marine environmental health.

Purpose of the Study:

  • To detect and quantify methyl tert-butyl ether (MTBE) concentrations in seawater samples from Marina del Rey harbor.
  • To investigate the spatial distribution and potential sources of MTBE contamination in a recreational marine environment.
  • To assess the persistence and extent of MTBE pollution in coastal waters.

Main Methods:

  • Solid phase microextraction (SPME) combined with gas chromatography-mass spectrometry (GC-MS) for sensitive MTBE detection.

Related Experiment Videos

  • Collection of seawater samples at various depths and locations within Marina del Rey harbor.
  • Analysis of samples during dry periods to isolate boating-related contamination sources.

    • Main Results:

    • MTBE was detected at sub-to-low microgram/liter levels in Marina del Rey harbor seawater.
    • Highest MTBE concentrations (18 µg/l) were found near the boat launching ramp, decreasing with distance.
    • Lowest MTBE levels (0.2 µg/l) were observed near the harbor entrance, approximately 2.3 km away.
    • No significant MTBE contamination was linked to the adjacent stormwater control channel.

    Conclusions:

    • Recreational boating activities are the primary source of MTBE contamination in Marina del Rey harbor.
    • The study provides quantitative data on MTBE levels and distribution in a shallow coastal harbor.
    • Findings highlight the need for monitoring fuel additive pollution in marine recreational areas.