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1. 发明授权

US4715217A Determining organic compounds using a membrane 失效
标题翻译：使用膜测定有机化合物
公开(公告)号：US4715217A
公开(公告)日：1987-12-29
申请号：US903535
申请日：1986-09-04
申请人： Brenton S. Coyne , Andrew J. Strandjord , Mark W. Spence , Reid S. Willis , Robert A. Bredeweg , Timothy S. Stevens
发明人： Brenton S. Coyne , Andrew J. Strandjord , Mark W. Spence , Reid S. Willis , Robert A. Bredeweg , Timothy S. Stevens
IPC分类号： B01D61/24 , G01N1/10 , G01N1/22 , G01N1/38 , G01N30/00 , G01N33/04 , G01N33/18 , G01N35/08 , B01D15/08
CPC分类号： B01D61/28 , B01D61/18 , B01D69/04 , B01D71/70 , B01F13/0818 , G01N1/10 , G01N2001/383 , G01N33/04 , G01N33/1826
摘要： The invention relates to a membrane assisted analytical chemical method for the determination of the concentration of an organic compound in an aqueous matrix. The membrane partitions the matrix from a receiving fluid. The organic compound permeates the membrane and passes into the receiving fluid which is then analyzed for the permeated compound by, for example, liquid or gas chromatography. The membrane is selected to prevent contamination of the receiving fluid from otherwise interferring components of the matrix. The concentration of the organic compound is above its solubility limit in water which would ordinarily prevent effective use of such a membrane assisted method. However, when the organic compound is emulsified with, for example, a surfactant, then a membrane assisted method is successful. The sensitivity of the method can be improved by using a thermal focusing/gas chromatography technique to concentrate the permeated organic compound from the receiving fluid and the membrane can be protected from physical damage by enclosing it in a perforate structure.
摘要翻译：本发明涉及用于测定含水基质中有机化合物浓度的膜辅助分析化学方法。膜从接收流体分隔基质。有机化合物渗透膜并进入接收流体，然后通过例如液体或气相色谱分析透过化合物。选择膜以防止接收流体污染基质的其他干扰成分。有机化合物的浓度高于其在水中的溶解度极限，这通常将妨碍有效使用这种膜辅助方法。然而，当有机化合物用例如表面活性剂乳化时，则膜辅助方法是成功的。通过使用热聚焦/气相色谱技术将渗透的有机化合物从接收流体中浓缩，可以提高该方法的灵敏度，并且可以通过将膜封闭在穿孔结构中来保护膜免受物理损伤。

2. 发明授权

US5150601A Fluid sampling for gas chromatograph with modified sampling valve 失效
标题翻译：带有改性取样阀的气相色谱仪的流体采样
公开(公告)号：US5150601A
公开(公告)日：1992-09-29
申请号：US631553
申请日：1990-12-21
申请人： David L. Simeroth , David S. Brink , Reid S. Willis , Dale J. Backlund
发明人： David L. Simeroth , David S. Brink , Reid S. Willis , Dale J. Backlund
IPC分类号： G01N1/20 , G01N30/04 , G01N30/12 , G01N30/20
CPC分类号： G01N30/20 , G01N1/2035 , G01N2030/126 , G01N2030/204 , G01N30/04
摘要： A new use for a process gas chromatography liquid injection valve of the Bendix type, i.e., a valve having a distal heated vaporization chamber, a central sample chamber, a valve stem bore intersecting both chambers, a radially grooved valve stem positioned within the valve stem bore and an air actuator for moving the valve stem back and forth in the valve stem bore. The heated vaporization chamber is removed and is not used. Instead, a carrier gas is now flowed through the remaining chamber of the valve. The valve is mounted on a process vessel or a process conduit (and not on a gas chromatograph) so that the valve stem of the valve now can be extended from the valve and into the process liquid in the process vessel or conduit. The groove of the valve stem fills with sample and then the valve stem is retracted into the valve so that the groove is positioned within the remaining chamber, i.e., what was used as a sample chamber is now is used as a vaporization chamber. The liquid in the groove can then evaporate into the carrier gas and be carried to a gas chromatograph or other analyzer.
摘要翻译：用于Bendix型工艺气相色谱液体注射阀的新用途，即具有远端加热蒸发室，中央样品室，与两个腔相交的阀杆孔的阀，位于阀杆内的径向开槽阀杆孔和用于在阀杆孔中来回移动阀杆的空气致动器。加热的蒸发室被去除并且不被使用。相反，载气现在流过阀的剩余室。阀安装在处理容器或过程管道上（而不是气相色谱仪）上，使得阀门的阀杆现在可以从阀门延伸到处理容器或管道中的过程液体中。阀杆的槽填充样品，然后阀杆缩回到阀中，使得凹槽位于剩余的室内，即现在用作样品室的是用作蒸发室。然后，槽中的液体可以蒸发成载气，并被运送到气相色谱仪或其他分析仪。

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