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    • 1. 发明申请
    • Ozone Monitor with Gas-Phase Ozone Scrubber
    • 臭氧监测器与气相臭氧洗涤器
    • US20100027016A1
    • 2010-02-04
    • US12512763
    • 2009-07-30
    • John W. BirksPeter C. AndersenCraig J. Williford
    • John W. BirksPeter C. AndersenCraig J. Williford
    • G01N21/00
    • G01N21/33Y10T436/179228
    • 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.
    • 本发明提供了通过用气相洗涤器代替内部固相臭氧洗涤器来大大减少或消除紫外线吸收化合物,汞,水蒸汽和微粒在臭氧的紫外吸收测量中的干扰的方法。 适合作为臭氧气相洗涤器的试剂气体包括一氧化氮和溴原子。 一氧化氮可以由气瓶提供,也可以在不存在氧的情况下通过N2O或NO2的光解。 通过由渗透管提供的Br 2的光解,方便地产生溴原子。 溴原子具有比NO更快地与臭氧反应并且在其反应中催化的优点。 一氧化氮的优点是通常与空气的其它组分反应较少。
    • 3. 发明申请
    • METHOD TO PRODUCE A CALIBRATION, REAGENT OR THERAPEUTIC GAS BY EXPOSING A PRECURSOR GAS TO ULTRAVIOLET LIGHT
    • 通过将前列腺气体暴露于超紫外线来生产校准,试剂或治疗气体的方法
    • US20100108489A1
    • 2010-05-06
    • US12595930
    • 2008-04-25
    • Peter C. AndersenCraig J. WillifordJohn W. Birks
    • Peter C. AndersenCraig J. WillifordJohn W. Birks
    • C01B21/24
    • C01B21/24A61K33/00B01J19/123B01J2219/0869B01J2219/0875C01B7/20C01B32/40
    • The present invention provides a means of producing nitric oxide (NO) by photolysis of nitrous oxide (N2O) at ultraviolet wavelengths. One application is the production of a known concentration of NO in a diluent gas for calibration of analytical instruments that measure nitric oxide in gases such as exhaled breath, ambient air and automobile exhaust. A potentially important medical application is the production of NO for inhalation therapy, an advantage being that very little toxic NO2 gas is produced. The method is useful for producing NO for industrial applications as well. Advantages of this method of NO production include the use of a single, inexpensive, readily available reagent gas of very low toxicity. Furthermore, the concentration of NO produced can be easily controlled by varying the ultraviolet (UV) lamp intensity and relative gas flow rates. The method may also be applied to the production of controlled concentrations of other gases as well such as CO and F2 by using reagent gases other than N2O.
    • 本发明提供通过在紫外线波长下光解一氧化二氮(N2O)来生产一氧化氮(NO)的方法。 一种应用是在稀释气体中产生已知浓度的NO,用于校准测量气体如呼出呼气,环境空气和汽车排气中的一氧化氮的分析仪器。 潜在的重要医疗应用是生产用于吸入治疗的NO,其优点是产生非常少量的有毒NO 2气体。 该方法也可用于生产工业应用的NO。 这种NO生产方法的优点包括使用单一,便宜,容易获得的非常低毒性的反应气。 此外,通过改变紫外(UV)灯强度和相对气体流速可以容易地控制产生的NO的浓度。 该方法也可以应用于通过使用除了N 2 O以外的其它试剂气体来生产受控浓度的其它气体,例如CO和F2。
    • 4. 发明申请
    • Use of a Broad Band UV Light Source for Reducing The Mercury Interference in Ozone Measurements
    • 使用宽带UV光源降低臭氧测量中的汞干扰
    • US20090302230A1
    • 2009-12-10
    • US12480544
    • 2009-06-08
    • John W. BirksCraig J. WillifordPeter C. Andersen
    • John W. BirksCraig J. WillifordPeter C. Andersen
    • G01J1/42
    • G01J3/42G01J3/10G01N33/0024G01N33/0039Y02A50/247
    • The present disclosure provides a means of greatly reducing the interference of mercury vapor in the UV absorbance measurement of ozone. Currently, commercial ozone monitors make use of a low pressure Hg lamp as the radiation source. Because the lamp spectral lines are extremely narrow and resonant with the Hg vapor absorption spectrum, ozone monitors typically detect Hg with approximately three orders of magnitude greater sensitivity than ozone itself. The replacement of the low pressure mercury lamp with a broad band UV source centered near 254 nm greatly reduces the Hg interference. The optimal band width (FWHM) for the radiation source is approximately 1-10 nm. For band widths in this range, the Hg interference is reduced by a factor of 140 (for 1 nm) to 1,400 (for 10 nm) with minimal effect on the sensitivity toward ozone and linear dynamic range. Although conventional broad band sources such as medium and high pressure Hg lamps, hydrogen lamps, deuterium lamps and xenon arc lamps could be used in conjunction with a monochromator and/or band pass filter to produce radiation of the desirable band width, recently developed UV LEDs are used in the disclosed embodiments because of their small size and low power consumption.
    • 本公开提供了在臭氧的紫外吸收测量中大大降低汞蒸气的干扰的方法。 目前,商用臭氧监测仪采用低压汞灯作为辐射源。 由于灯光谱线非常窄并且与Hg蒸气吸收光谱共振,所以臭氧监测器通常会检测Hg的灵敏度比臭氧本身大约三个数量级。 以254nm左右为中心的宽带紫外光源替代低压汞灯大大降低了汞的干扰。 辐射源的最佳带宽(FWHM)约为1-10nm。 对于此范围内的带宽,Hg干扰降低到140(1 nm)至1,400(10 nm),对臭氧敏感度和线性动态范围影响最小。 尽管常规的宽带光源(例如中压和高压汞灯),氢灯,氘灯和氙弧灯可以与单色仪和/或带通滤波器结合使用以产生所需带宽的辐射,最近开发的UV LED 由于其小尺寸和低功耗,在所公开的实施例中使用。
    • 6. 发明授权
    • Ozone monitor with gas-phase ozone scrubber
    • 臭氧监测仪与气相臭氧洗涤器
    • US08395776B2
    • 2013-03-12
    • US12512763
    • 2009-07-30
    • John W. BirksPeter C. AndersenCraig J. Williford
    • John W. BirksPeter C. AndersenCraig J. Williford
    • G01N21/00
    • G01N21/33Y10T436/179228
    • 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.
    • 本发明提供了通过用气相洗涤器代替内部固相臭氧洗涤器来大大减少或消除紫外线吸收化合物,汞,水蒸汽和微粒在臭氧的紫外吸收测量中的干扰的方法。 适合作为臭氧气相洗涤器的试剂气体包括一氧化氮和溴原子。 一氧化氮可以由气瓶提供,也可以在不存在氧的情况下通过N2O或NO2的光解。 通过由渗透管提供的Br 2的光解,方便地产生溴原子。 溴原子具有比NO更快地与臭氧反应并且在其反应中催化的优点。 一氧化氮的优点是通常与空气的其它组分反应较少。
    • 7. 发明授权
    • Use of photopolymerization for amplification and detection of a molecular recognition event
    • 使用光聚合进行扩增和检测分子识别事件
    • US07354706B2
    • 2008-04-08
    • US11372485
    • 2006-03-09
    • Kathy L. RowlenJohn W. BirksChristopher BowmanHadley SikesRyan HansenRobert Kuchta
    • Kathy L. RowlenJohn W. BirksChristopher BowmanHadley SikesRyan HansenRobert Kuchta
    • C12Q1/68C12Q1/70G01N33/53
    • C12Q1/6816C12Q2565/401
    • The invention provides methods to detect molecular recognition events. The invention also provides methods to detect the presence of or identify a target species based on its interaction with one or more probe species. The methods of the invention are based on amplification of the signal due to each molecular recognition event. The amplification is achieved through photopolymerization, with the polymer formed being associated with the molecular recognition event. In an embodiment, a fluorescent polymer, a magnetic polymer, a radioactive polymer or an electrically conducting polymer can form the basis of detection and amplification. In another embodiment, a polymer gel swollen with a fluorescent solution, a magnetic solution, a radioactive solution or an electrically conducting solution can form the basis of detection and amplification. In another embodiment, sufficient polymer forms to be detectable by visual inspection.
    • 本发明提供检测分子识别事件的方法。 本发明还提供了基于其与一种或多种探针物种的相互作用来检测靶物种的存在或鉴定目的物种的方法。 本发明的方法基于由于每个分子识别事件引起的信号的放大。 通过光聚合实现扩增,形成的聚合物与分子识别事件相关联。 在一个实施方案中,荧光聚合物,磁性聚合物,放射性聚合物或导电聚合物可以形成检测和扩增的基础。 在另一个实施方案中,用荧光溶液,磁性溶液,放射性溶液或导电溶液溶胀的聚合物凝胶可以形成检测和扩增的基础。 在另一个实施方案中,足够的聚合物形式可通过目视检查来检测。
    • 9. 发明授权
    • Method and apparatus to detect a gas by measuring ozone depletion
    • 通过测量臭氧消耗来检测气体的方法和装置
    • US07045359B2
    • 2006-05-16
    • US10206464
    • 2002-07-26
    • John W. BirksMark J. Bollinger
    • John W. BirksMark J. Bollinger
    • G01N31/00
    • G01N31/005G01N33/0013G01N33/0037G01N33/497Y02A50/245Y10T436/17Y10T436/177692Y10T436/179228
    • The present invention relates to an apparatus and method for determining the concentration of nitric oxide (NO) in a gas mixture such as air. The gas sample containing NO is mixed with a gas containing ozone (O3), and the change in the ozone concentration is measured after a sufficient time is allowed for the reaction between NO and O3 to take place and destroy a measurable quantity of O3. In the disclosed embodiment, the concentration of ozone is measured using the technique of UV absorption. In this case, the invention has the advantage over other instruments for measuring NO of having absolute calibration based on the known extinction coefficient for ozone at ultraviolet wavelengths. The invention discloses both static and dynamic flow systems, and the NO concentration measurements may be made over a wide pressure range.
    • 本发明涉及一种用于确定气体混合物如空气中的一氧化氮(NO)的浓度的装置和方法。 含有NO的气体样品与含有臭氧(O 3 3 N)的气体混合,并且在允许NO和O 3之间的反应足够的时间后测量臭氧浓度的变化 发生并破坏可测量的O 3 3 。 在所公开的实施方案中,使用UV吸收技术测量臭氧的浓度。 在这种情况下,与紫外线波长下的已知的臭氧消光系数相比,本发明具有优于其他用于测量具有绝对校准的NO的仪器的优点。 本发明公开了静态和动态流动系统,并且NO浓度测量可以在宽的压力范围内进行。