Process for the detection of sulfur
    1.
    发明授权
    Process for the detection of sulfur 失效
    检测硫的方法

    公开(公告)号:US5424217A

    公开(公告)日:1995-06-13

    申请号:US873402

    申请日:1992-04-24

    摘要: A process and apparatus are disclosed for the detection and measurement of sulfur in both organic and inorganic sulfur-containing compounds. The process includes admixing a sample including a sulfur-containing compound with oxygen, and then exposing the mixture to a source of combustion causing heat in the presence of a combustion supporting reducing agent at a combustion site. The resulting gaseous combustion products are vacuum extracted from the combustion site, and then directed into a darkened low pressure chamber. The combustion products in the low pressure chamber are then contacted with ozone, with the result that the sulfur combustion products are converted to chemiluminescent sulfur dioxide. The emitted chemiluminescence is then detected, and may be measured to provide a quantitative indication of the amount of sulfur in the original sample. The preferred source of oxygen is air, the preferred form of combustion heat is a flame, and the preferred form of reducing agent is hydrogen gas.

    摘要翻译: 公开了用于检测和测量有机和无机含硫化合物中的硫的方法和装置。 该方法包括将包含含硫化合物的样品与氧混合,然后将混合物暴露在燃烧源的燃烧源中,该燃烧源在燃烧载体还原​​剂存在下在燃烧现场。 所得到的气态燃烧产物从燃烧部位真空抽出,然后导入黑暗的低压室。 然后将低压室中的燃烧产物与臭氧接触,结果硫燃烧产物转化为化学发光二氧化硫。 然后检测发射的化学发光,并且可以测量以提供原始样品中硫的量的定量指示。 优选的氧源是空气,燃烧热的优选形式是火焰,还原剂的优选形式是氢气。

    Process and apparatus for simultaneous measurement of sulfur and
non-sulfur containing compounds
    2.
    发明授权
    Process and apparatus for simultaneous measurement of sulfur and non-sulfur containing compounds 失效
    用于同时测量硫和不含硫化合物的方法和装置

    公开(公告)号:US5330714A

    公开(公告)日:1994-07-19

    申请号:US13338

    申请日:1993-02-04

    摘要: The present invention describes the process and apparatus for the simultaneous measurement of sulfur-containing compounds and organic compounds with or without sulfur in their structures. A detector cell is described that allows simultaneous measurement of compounds that can be ionized in a flame and thereby cause the electrical conductivity of the flame to increase, and the selective measurement of sulfur-containing compounds which simultaneously form sulfur monoxide. Sulfur monoxide, upon mixing with ozone, emits light from 240 to 450 nm. The intensity of the light can be measured and related to the concentration of sulfur in the sample, while changes in electrical conductivity of the flame measured by imposing a voltage across the cell quantifies the organic compounds irrespective of whether or not they contain sulfur. Ratios of the signals of light intensity and electrical conductivity are different for each compound and, when the detector is coupled with a chromatographic separation column and process, this ratio facilitates the identification of unknown constituents in a mixture.

    摘要翻译: 本发明描述了在其结构中同时测量含硫化合物和有或无硫的有机化合物的方法和装置。 描述了一种检测器电池,其允许同时测量可在火焰中电离的化合物,从而导致火焰的导电性增加,并且选择性测量同时形成一氧化硫的含硫化合物。 与臭氧混合后的一氧化二砷会发出240至450nm的光。 可以测量光的强度并且与样品中的硫的浓度相关,而通过在整个电池上施加电压而测量的火焰的电导率的变化量化有机化合物,而不管它们是否含有硫。 对于每种化合物,光强度和电导率信号的比例是不同的,并且当检测器与色谱分离柱和方法结合时,该比率有助于鉴定混合物中未知组分。

    Method for the measurement of sulfur compounds
    3.
    发明授权
    Method for the measurement of sulfur compounds 失效
    测定硫化合物的方法

    公开(公告)号:US6130095A

    公开(公告)日:2000-10-10

    申请号:US824852

    申请日:1992-01-23

    IPC分类号: G01N21/76 G01N21/62

    CPC分类号: G01N21/76 Y10T436/188

    摘要: An improved system for the measurement of sulfur compounds is described. The system comprises an enclosed burner assembly for the conversion of sulfur-containing compounds to sulfur monoxide and subsequent detection of sulfur monoxide by ozone-induced chemiluminescence. The new burner assembly provides higher efficiency for the conversion of sulfur compounds to produce sulfur monoxide than previous flame-based detection systems.

    摘要翻译: 描述了一种改进的硫化合物测量系统。 该系统包括用于将含硫化合物转化为一氧化硫的封闭燃烧器组件,并随后通过臭氧诱导的化学发光检测一氧化硫。 与以前的基于火焰的检测系统相比,新的燃烧器组件为硫化合物转化产生一氧化硫提供了更高的效率。

    Method for the determination of dissolved carbon in water
    4.
    发明授权
    Method for the determination of dissolved carbon in water 失效
    水中溶解碳的测定方法

    公开(公告)号:US5443991A

    公开(公告)日:1995-08-22

    申请号:US869308

    申请日:1992-04-16

    摘要: Apparatus and methods for the measurement of total organic carbon and total inorganic and organic content of water are described. A novel combination of an acidification module, and inorganic carbon removal module based on a carbon dioxide selective gas permeable membrane, and oxidation reaction system which incorporates in-situ generation of oxidizing agents, coupled with catalyzed photo-oxidation of organic compounds to form carbon dioxide, and a high sensitivity, conductometric detector employing a carbon dioxide selective gas permeable membrane permits on-line measurement of the total organic carbon content of water streams.

    摘要翻译: 描述了用于测量总有机碳和水的总无机和有机含量的装置和方法。 基于二氧化碳选择性气体渗透膜的酸化模块和无机碳去除模块的新型组合以及包含原位生成氧化剂的氧化反应体系,加上有机化合物的催化光氧化形成二氧化碳 ,并且使用二氧化碳选择性气体渗透膜的高灵敏度电导率检测器允许在线测量水流的总有机碳含量。

    Low-level boron detection and measurement
    5.
    发明授权
    Low-level boron detection and measurement 有权
    低硼检测和测量

    公开(公告)号:US06884356B2

    公开(公告)日:2005-04-26

    申请号:US10333434

    申请日:2001-08-04

    摘要: Methods and apparatus (50) are disclosed for accurately measuring low concentrations of boron in deionized water utilizing the chemical reaction of boric acid with a polyol by injecting very small plugs of concentrated polyol into streams of boron containing and non-boron containing water samples to produce an ionized acids product, and then measuring the conductivity difference (delta conductivity), corrected for interfering or extraneous factors which can effect conductivity, between such boron containing and non-boron containing samples using a conductivity and temperature detector (23).

    摘要翻译: 公开了使用硼酸与多元醇的化学反应来精确测量去离子水中的低浓度硼的方法和装置(50),其中将非常小的浓缩多元醇塞塞入含硼和含硼水样品流中以产生 电离酸产物,然后使用电导率和温度检测器(23)测量在含硼和非含硼样品之间的影响电导率的干扰或外来因素的电导率差(δ电导率)。

    Method and apparatus for the measurement of components of exhaled breath
in humans
    6.
    发明授权
    Method and apparatus for the measurement of components of exhaled breath in humans 失效
    用于测量人呼出呼吸的成分的方法和装置

    公开(公告)号:US6010459A

    公开(公告)日:2000-01-04

    申请号:US827703

    申请日:1997-04-09

    摘要: Methods and related equipment for measuring components of exhaled breath of a subject are provided which involve causing the subject to exhale into an appropriate apparatus for receiving exhaled breath; increasing the pressure in the mouth of the subject to a level sufficient to close the vellum and isolate the nasopharynx during exhalation; a means of monitoring nasal CO.sub.2 to conrirm vellum closure; and measuring the level of one or more components of the collected exhaled breath. Endogenous nitric oxide is a preferred component of exhaled breath for monitoring and analysis.

    摘要翻译: 提供了用于测量受试者的呼出气的组分的方法和相关设备,其涉及使受试者呼出用于接收呼出气的适当装置; 将受试者的口腔中的压力增加至足以关闭小乳头并在呼气期间隔离鼻咽的水平; 监测鼻二氧化碳以确保小乳头关闭的手段; 并测量所收集的呼出气中的一个或多个组分的水平。 内源性一氧化氮是用于监测和分析的呼出气的优选组分。

    Method and apparatus for the measurement of dissolved carbon
    8.
    发明授权
    Method and apparatus for the measurement of dissolved carbon 失效
    用于测量溶解碳的方法和装置

    公开(公告)号:US5820823A

    公开(公告)日:1998-10-13

    申请号:US501597

    申请日:1995-07-12

    摘要: Apparatus and methods for the measurement of total organic carbon, total inorganic carbon and total carbon of water are described. The sample is acidified and split into an inorganic carbon stream and a total carbon stream. The inorganic carbon in the inorganic stream is oxidized and both the organic and inorganic carbon in the total carbon stream is oxidized. The resulting carbon dioxide is measured in each stream using carbon dioxide sensors employing a gas permeable membrane dividing deionized water from the oxidized sample water and a pair of micro-conductivity and temperature sensors.

    摘要翻译: 描述了用于测量总有机碳,总无机碳和水的总碳的装置和方法。 将样品酸化并分成无机碳流和总碳流。 无机物流中的无机碳被氧化,并且总碳流中的有机碳和无机碳均被氧化。 使用二氧化碳传感器在二氧化碳传感器中测量所得到的二氧化碳,所述二氧化碳传感器使用从氧化的样品水中分离去离子水的透气膜和一对微导电性和温度传感器。

    Apparatus and method to supply a fluid sample to an analyzer
    9.
    发明授权
    Apparatus and method to supply a fluid sample to an analyzer 有权
    将流体样品供应到分析器的装置和方法

    公开(公告)号:US5976468A

    公开(公告)日:1999-11-02

    申请号:US191610

    申请日:1998-11-13

    IPC分类号: G01N1/00 G01N1/10

    摘要: Apparatus and methods for supplying a portion of a fluid stream and, alternately, a fluid of known composition and concentration to an analyzer are provided. The fluid stream is directed through a series of connected chambers formed in an integral housing. A sampling needle has an inlet in one of the chambers and an outlet in fluid communication with the analyzer. When desired, a tube or vial containing a known fluid may be inserted into a chamber containing the sampling needle, so that the known fluid will be supplied to the analyzer. A second needle provides ventilation to the vial to prevent the formation of a vacuum as the known fluid is drained from the vial.

    摘要翻译: 提供了用于将一部分流体流以及已知组成和浓度的流体供应给分析器的装置和方法。 流体流被引导通过形成在一体式壳体中的一系列连接的腔室。 采样针在其中一个腔室中具有入口和与分析器流体连通的出口。 当需要时,可以将含有已知流体的管或小瓶插入到含有采样针的腔室中,从而将已知的流体供应到分析器。 当已知的流体从小瓶中排出时,第二针针对小瓶提供通气以防止形成真空。

    Apparatus for the detection of sulfur
    10.
    发明授权
    Apparatus for the detection of sulfur 失效
    用于检测硫的装置

    公开(公告)号:US5935519A

    公开(公告)日:1999-08-10

    申请号:US862485

    申请日:1997-05-23

    摘要: A process and apparatus are disclosed for the detection and measurement of sulfur in both organic and inorganic sulfur-containing compounds. The process includes admixing a sample including a sulfur-containing compound with oxygen, and then exposing the mixture to a source of combustion causing heat in the presence of a combustion supporting reducing agent at a combustion site. The resulting gaseous combustion products are vacuum extracted from the combustion site, and then directed into a darkened low pressure chamber. The combustion products in the low pressure chamber are then contacted with ozone, with the result that the sulfur combustion products are converted to chemiluminescent sulfur dioxide. The emitted chemiluminescence is then detected, and may be measured to provide a quantitative indication of the amount of sulfur in the original sample. The preferred source of oxygen is air, the preferred form of combustion heat is a flame, and the preferred form of reducing agent is hydrogen gas.

    摘要翻译: 公开了用于检测和测量有机和无机含硫化合物中的硫的方法和装置。 该方法包括将包含含硫化合物的样品与氧混合,然后将混合物暴露于燃烧源,在燃烧现场的助燃还原剂存在下引起热量。 所得到的气态燃烧产物从燃烧部位真空抽出,然后导入黑暗的低压室。 然后将低压室中的燃烧产物与臭氧接触,结果硫燃烧产物转化为化学发光二氧化硫。 然后检测发射的化学发光,并且可以测量以提供原始样品中硫的量的定量指示。 优选的氧源是空气,燃烧热的优选形式是火焰,还原剂的优选形式是氢气。