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

被引：136
|
作者：
Guo, Huan [1 ,2 ]
Yao, Jun [1 ,2 ,3 ,4 ]
Cai, Minmin [1 ,2 ,5 ]
Qian, Yiguang [3 ,4 ]
Guo, Yue [1 ,2 ]
Richnow, Hans H. [5 ]
Blake, Ruth E. [6 ]
Doni, Serena [7 ]
Ceccanti, Brunello [7 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Beijing 100083, Peoples R China
[3] China Univ Geosci, Chinese Minist Educ, Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
[4] China Univ Geosci, Sino Hungarian Joint Lab Environm Sci & Hlth, Wuhan 430074, Peoples R China
[5] UFZ Helmholtz Ctr Environm Res, Helmholtz Ctr Environm Res, Dept Isotope Biogeochem, D-04318 Leipzig, Germany
[6] Yale Univ, Dept Geol & Geophys, New Haven, CT 06520 USA
[7] Italian Natl Res Council CNR, Inst Ecosyst Studies ISE, Pisa, Italy
来源：
CHEMOSPHERE | 2012年 / 87卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Total petroleum hydrocarbons; Soil microbial activity; Microbial population; Microcalorimetry; Urease activity; BIOREMEDIATION; HEAT; BIOMASS; GROWTH;
D O I：
10.1016/j.chemosphere.2012.01.034
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
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 (mu) 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. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1273 / 1280
页数：8
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