| arsenic mobilization by epilithic bacterial communities associated with volcanic rocks from camarones river, atacama desert, northern chile. | the arsenic biogeochemical cycle is greatly dependent on microbial transformations that affect both the distribution and mobility of arsenic species in the environment. in this study, a microbial biofilm from volcanic rocks was characterized on the basis of its bacterial composition and ability to mobilize arsenic under circumneutral ph. biofilm microstructure was analyzed by scanning electron microscopy (sem)-energy-dispersive spectroscopy (eds). strains were isolated from biofilms and identifi ... | 2010 | 20859623 |