Fig.8-13 Field-emission scanning electron microscope micrograph of biofilms and energy-dispersive X-ray spectroscopic (EDS) analysis
(a) Biofilm formed in sedimentary rock groundwater. (b) Biofilm formed in granite groundwater. (c) Result of the EDS analysis of the allowed point in the biofilm of sedimentary rocks. (d) Result of the EDS analysis of the allowed point in the biofilm of granite rocks. The elements Fe, Ca, S, etc. were detected in the biofilms.
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