Effects of highly volatile organochlorine solvents on soil nitrogen metabolism and microbial counts

Hiromasa Kiyota, Shinji Otsuka, Akihito Yokoyama, Satoshi Matsumoto, Hidenori Wada, Shinjiro Kanazawa

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The effects of highly volatile organochlorine solvents (1,1,1- trichloroethane, TCET; trichloroethylene, TCE; and tetrachloroethylene, PCE) on soil nitrogen cycle and microbial counts were investigated using volcanic ash soil with different fertilizations. All the solvents significantly inhibited the activity of the cycle under the sealed conditions with 10 to 50 mg/g (dry soil) solvents added. No significant difference between the solvents, and between fertilization plots, was observed. Nitrate ion was not accumulated, and instead, ammonium ion was highly accumulated in the presence of the solvents. Nitrite ion was partially detected, while l-glutaminase activity was inhibited. The growths of ammonification, nitritation, nitratation and denitrification bacteria, and filamentous fungi were significantly inhibited in the presence of 10 mg/g (dry soil) of the solvents.

    Original languageEnglish
    Pages (from-to)109-116
    Number of pages8
    JournalSoil and Water Research
    Volume7
    Issue number3
    DOIs
    Publication statusPublished - 2012

    Keywords

    • 1,1,1-trichloroethane
    • Microbial counts
    • Soil nitrogen cycle
    • Tetrachloroethylene
    • Trichloroethylene

    ASJC Scopus subject areas

    • Aquatic Science
    • Soil Science

    Fingerprint

    Dive into the research topics of 'Effects of highly volatile organochlorine solvents on soil nitrogen metabolism and microbial counts'. Together they form a unique fingerprint.

    Cite this