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Published online 16 October 2007
Published in J Environ Qual 36:1635-1645 (2007)
DOI: 10.2134/jeq2007.0118
© 2007 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Ecotoxic Effect of Phenanthrene on Nitrifying Bacteria in Soils of Different Properties

Barbara Maliszewska-Kordybacha,*, Agnieszka Klimkowicz-Pawlasa, Bozena Smreczaka and Dalia Janusauskaiteb

a Institute of Soil Science and Plant Cultivation- State Research Institute, ul. Czartoryskich 8, 24-100 Pulawy, Poland
b Lithuanian Institute of Agriculture, Dotnuva, 5051 Kedainiai District, Lithuania


Figure 1
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  		Fig. 1. Comparison of the relative nitrification potential (RE-NP) in 50 soils contaminated with phenanthrene at the levels of 100 and 1000 mg kg–1. Error bars represent SD calculated for two replications (n = 2). Indistinguishable error bars correspond to SD < 0.1%.

 

Figure 2
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  		Fig. 2. An example of the calculations used to determine the EC50 values for selected soils on the basis of the square root-x regression model. RE-NP, relative nitrification potential; SQRT, square root.

 




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