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. Author manuscript; available in PMC: 2013 Nov 6.

Published in final edited form as: Environ Sci Technol. 2012 Oct 26;46(21):10.1021/es303645n. doi: 10.1021/es303645n

Experimental relationship of E. coli inactivation by the singlet oxygen bubble treatment: (a) in buffer solution (30 μg/mL E. coli in 33 mM Tris-HCl buffer) as a function of pre-equilibration with nitrogen (▲), air (●), or oxygen (■); and (b) blue symbols, SDS buffer (30 μg/mL E. coli in Tris-HCl buffer with sodium dodecyl sulfate (1.0 mM)), and red symbols, CaCl₂ buffer (30 μg/mL E. coli in Tris-HCl buffer with 1 mM Ca²⁺ added), after first being pre-equilibrated with nitrogen ( , ), air, ( , ) or oxygen ( , ). Error bars were obtained from 3 or more measurements.

Inline graphic — Experimental relationship of E. coli inactivation by the singlet oxygen bubble treatment: (a) in buffer solution (30 μg/mL E. coli in 33 mM Tris-HCl buffer) as a function of pre-equilibration with nitrogen (▲), air (●), or oxygen (■); and (b) blue symbols, SDS buffer (30 μg/mL E. coli in Tris-HCl buffer with sodium dodecyl sulfate (1.0 mM)), and red symbols, CaCl₂ buffer (30 μg/mL E. coli in Tris-HCl buffer with 1 mM Ca²⁺ added), after first being pre-equilibrated with nitrogen ( , ), air, ( , ) or oxygen ( , ). Error bars were obtained from 3 or more measurements.