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1. 发明申请

WO2006051354A1 METHOD AND APPARATUS FOR INTRODUCING SAMPLES OF GAS AT CONTROLLED PRESSURE IN A GAS CHROMATOGRAPH 审中-公开
标题翻译：气体色谱法中控制压力气体样品介绍的方法与装置
公开(公告)号：WO2006051354A1
公开(公告)日：2006-05-18
申请号：PCT/IB2005/001568
申请日：2005-06-03
申请人： CNR CONSIGLIO NAZIONALE DELLE RICERCHE , CAPRAI, Antonio
发明人： CAPRAI, Antonio
IPC分类号： G01N30/32
CPC分类号： G01N30/32 , G01N30/16 , G01N30/466 , G01N30/66 , G01N2030/025 , G01N2030/322 , G01N2030/625 , G01N2030/626
摘要： Apparatus for analysing a gas sample comprising a variable volume chamber (8) in fluodynamic connection through a line (21-22) with a sample holding container (30), in which the gas sample is contained, and through a line (11-19) with a plurality of gaschromatographic instruments, for example two (51, 52). These instruments carry out the quantitative and qualitative analysis of the gas sample according to known techniques. Preliminarily, by vacuum pumps (60), the line (11-23) and the variable volume chamber (8) are vacuumed. Then valves (41, 43, 45) are closed in order to exclude the portions of line set between valves (41, 43) and six-way valves (75, 76) respectively, and a delivery duct (23) of the pump (65), which is the general pumping means of the line. Since the variable volume chamber (8) is under vacuum when it is connected to the sample holding container (30), it attracts a certain quantity of gas sample inside. The pressure of the chamber (8), and then of the sample holding container (30), are monitored instantly by a pressure sensor (25), for example an analogic reader (35) . Once chosen the column (51, 52) that can be used for carrying out the qualitative and quantitative analysis of the gas sample, the corresponding valve (41, 43) is open. Then, starting from a known volume and pressure, the gas sample is compressed, or expanded, changing the volume of the chamber (8), in order to bring the pressure of the gas same within a predetermined range of values for which the response of the detector (70, 71) is linear.
摘要翻译：一种用于分析气体样品的装置，包括通过具有样品保持容器（30）的管线（21-22）的流体动力学连接的可变容积室（8），其中容纳气体样品，并且通过管线（11-19 ）与多个气相色谱仪器，例如两个（51,52）。这些仪器根据已知技术对气体样品进行定量和定性分析。最初，通过真空泵（60），线（11-23）和可变容积室（8）被抽真空。然后关闭阀门（41,43,45），以分别排除阀门（41,43）和六通阀（75,76）之间的管路部分和泵的输送管道（23） 65），这是线路的一般泵送装置。由于可变容积室（8）在与样品保持容器（30）连接时处于真空状态，因此吸入一定量的气体样品。通过压力传感器（25），例如模拟读取器（35）立即监测腔室（8）的压力和样品保持容器（30）的压力。一旦选择了可用于对气体样品进行定性和定量分析的柱（51,52），则相应的阀（41,43）打开。然后，从已知的体积和压力开始，气体样品被压缩或膨胀以改变腔室（8）的体积，以便使气体的压力相同于预定范围的值，检测器（70,71）是线性的。

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