Safety, Environment and Energy
Selective Generation of O– under Atmospheric Pressure
2004 Volume 37 Issue 6 Pages 758-763
Details
2004 Volume 37 Issue 6 Pages 758-763
The negative ion species generated by DC corona discharge of ultra pure air under atmospheric pressure were observed using quadrupole mass spectrometry (QMS), and the concentrations of O–, O2–, O3–, NO–, and NO2– were measured. The behavior of the atomic oxygen radical anion (O–) was examined intensively. The possibility of selective generation of O– with ozone (O3) suppression was examined under the conditions of a low O2 concentration, water addition, and NO addition. It was confirmed that a low O2 concentration is advantageous and that water addition is disadvantageous for the selective O– generation with O3 suppression. An adequate concentration of NO can control O3 generation effectively without any O– decrease.
