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Related Experiment Videos

Mutagenic activity in roadside soils.

Hiroko Tsukatani1, Yoshito Tanaka, Nobuyuki Sera

  • 1Fukuoka Institute of Health and Environmental Sciences, 39 Mukaizano, Dazaifu, Fukuoka 818-0135, Japan.

The Journal of Toxicological Sciences
|September 20, 2002
PubMed
Summary

Soil mutagenicity near roads in Kurume City was assessed using the Ames test. Higher mutagenicity and pollutant levels (PAHs, heavy metals) were found in median strip soils, suggesting potential nitroarene and aromatic amine contamination.

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Area of Science:

  • Environmental Science
  • Toxicology
  • Soil Science

Background:

  • Urban soils are susceptible to contamination from traffic-related pollutants.
  • Assessing soil mutagenicity is crucial for understanding environmental health risks.

Purpose of the Study:

  • To determine the mutagenicity of urban soils in Kurume City.
  • To correlate mutagenicity with polycyclic aromatic hydrocarbons (PAHs) and heavy metal concentrations.
  • To identify potential mutagenic agents in the soil.

Main Methods:

  • Soil samples were collected from median strips, roadsides, and a park near arterial roads.
  • Mutagenicity was assessed using the Ames test with bacterial strains TA98, TA100, YG1041, YG1042, YG3003, and YG7108, with and without S9 mix.
  • Concentrations of PAHs and heavy metals were measured.

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Main Results:

  • Soil organic extracts exhibited mutagenicity in strains TA98, TA100, YG1041, and YG1042.
  • Median strip and intersection soils showed higher mutagenicity and pollutant levels.
  • Mutagenic activity correlated significantly with PAHs and heavy metals, though PAHs explained <12% of mutagenicity.
  • Higher mutagenicity was observed in YG strains compared to TA strains.

Conclusions:

  • Urban soils in Kurume City, particularly near roads, are mutagenic.
  • PAHs and heavy metals contribute to soil mutagenicity, but other unidentified compounds are likely involved.
  • The results suggest the presence of nitroarenes and aromatic amines as significant mutagens in these soils.