发明名称 |
Ozone monitor with gas-phase ozone scrubber |
摘要 |
The present invention provides a means of greatly reducing or eliminating the interferences of UV-absorbing compounds, mercury, water vapor and particulates in the UV absorbance measurement of ozone by replacing the internal solid-phase ozone scrubber with a gas-phase scrubber. Reagent gases well suited as a gas-phase scrubber of ozone include nitric oxide and bromine atoms. Nitric oxide may be supplied by a gas cylinder or by photolysis of either N2O or NO2, both in the absence of oxygen. Bromine atoms are conveniently generated by photolysis of Br2 supplied by a permeation tube. Bromine atoms have the advantage of having a faster reaction with ozone than NO and of being catalytic in their reaction. Nitric oxide has the advantage of being generally less reactive with other components of air. |
申请公布号 |
US8395776(B2) |
申请公布日期 |
2013.03.12 |
申请号 |
US20090512763 |
申请日期 |
2009.07.30 |
申请人 |
BIRKS JOHN W.;ANDERSEN PETER C.;WILLIFORD CRAIG J.;2B TECHNOLOGIES, INC. |
发明人 |
BIRKS JOHN W.;ANDERSEN PETER C.;WILLIFORD CRAIG J. |
分类号 |
G01N21/00 |
主分类号 |
G01N21/00 |
代理机构 |
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地址 |
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