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Effects of petroleum contamination on soil microbial numbers, metabolic activity and urease activity

机译：石油污染对土壤微生物数量，代谢活性和脲酶活性的影响

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摘要

The influence of petroleum contamination on soil microbial activities was investigated in 13 soil samples from sites around an injection water well (Iw-1, 2, 3, 4) (total petroleum hydrocarbons (TPH): 7.5-78 mg kg~(-1)), an oil production well (Op-1, 2, 3, 4, 5) (TPH: 149-1110 mg kg~(-1)), and an oil spill accident well (Os-1, 2, 3, 4) (TPH: 4500-34600 mg kg~(-1)). The growth rate constant (μ) of glucose stimulated organisms, determined by microcalorimetry, was higher in Iw soil samples than in Op and Os samples. Total cultivable bacteria and fungi and urease activity also decreased with increasing concentration of TPH. Total heat produced demonstrated that TPH at concentrations less than about 1 g kg~(-1) soil stimulated anaerobic respiration. A positive correlation between TPH and soil organic matter (OM) and stimulation of fungi-bacteria-urease at low TPH doses suggested that TPH is bound to soil OM and slowly metabolized in Iw soils during OM consumption. These methods can be used to evaluate the potential of polluted soils to carry out self-bioremediation by metabolizing TPH.
机译：在注入水井​​周围的13个土壤样品中调查了石油污染对土壤微生物活性的影响（Iw-1、2、3、4）（总石油烃（TPH）：7.5-78 mg kg〜（-1） ）），产油井（Op-1、2、3、4、5）（TPH：149-1110 mg kg〜（-1））和溢油事故井（Os-1、2、3， 4）（TPH：4500-34600mg kg·（-1））。微量量热法测定的葡萄糖刺激的生物的生长速率常数（μ）在Iw土壤样品中高于在Op和Os样品中。随着TPH浓度的增加，可培养细菌，真菌和脲酶的总活性也降低。产生的总热量表明，浓度小于1 g kg〜（-1）的土壤中的TPH刺激了厌氧呼吸。 TPH与土壤有机质（OM）和低TPH剂量下的真菌-细菌脲酶刺激之间呈正相关，这表明TPH与OM结合并在OM消耗过程中在Iw土壤中缓慢代谢。这些方法可用于评估受污染土壤通过代谢TPH进行自我生物修复的潜力。

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  • 来源
    《Chemosphere》 |2012年第11期|p.1273-1280|共8页
  • 作者

    Huan Guo; Jun Yao; Minmin Cai; Yiguang Qian; Yue Guo; Hans H. Richnow; Ruth E. Blake; Serena Doni; Brunello Ceccanti;

  • 作者单位

    School of Civil & Environmental Engineering, and National 'International Cooperation Base on Environment and Energy', University of Science and Technology Beijing,100083 Beijing, PR China;

    School of Civil & Environmental Engineering, and National 'International Cooperation Base on Environment and Energy', University of Science and Technology Beijing,100083 Beijing, PR China Department of Geology & Geophysics, Yale University, New Haven, CT 06520-8109, USA;

    School of Civil & Environmental Engineering, and National 'International Cooperation Base on Environment and Energy', University of Science and Technology Beijing,100083 Beijing, PR China UFZ, Helmholtz Centre for Environmental Research, Department of Isotope Biogeochemistry, Permoserstr. 15, 04318 Leipzig, Germany;

    Key Laboratory ofBiogeology and Environmental Geology of Chinese Ministry of Education and Sino-Hungarian joint Laboratory of Environmental Science and Health,University of Ceosciences, Wuhan 430074, PR China;

    School of Civil & Environmental Engineering, and National 'International Cooperation Base on Environment and Energy', University of Science and Technology Beijing,100083 Beijing, PR China;

    UFZ, Helmholtz Centre for Environmental Research, Department of Isotope Biogeochemistry, Permoserstr. 15, 04318 Leipzig, Germany;

    Department of Geology & Geophysics, Yale University, New Haven, CT 06520-8109, USA;

    Institute of Ecosystem Studies (ISE), Italian National Research Council (CNR), Pisa, Italy;

    Institute of Ecosystem Studies (ISE), Italian National Research Council (CNR), Pisa, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    total petroleum hydrocarbons; soil microbial activity; microbial population; microcalorimetry; urease activity;

    机译：总石油烃;土壤微生物活性微生物种群微量量热法脲酶活性;

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