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一台价格昂贵的气相色谱仪如果不能正常地工作是毫无意义的。因此快速地判断气相色谱仪工作不正常的原因已成为每个使用人员和维修人员希望掌握的知识。如果我们能熟悉衡量气相色谱仪性能的重要参数,就能利用这些参数去判断仪器不正常的原因。通常衡量气相色谱系统性能好坏的重要参数有:零电流(I_0)、噪声(σN)、灵敏度(S)、检测限(M)、线性动态范围(W_1)、响应指数、不稳定性和漂移,恒温精度和流速压力的稳定性等。一、操作条件的影响气相色谱系统工作时的操作条件如载气
An expensive gas chromatograph does not make sense if it does not work properly. Therefore, the reason why the gas chromatograph does not work well quickly has become the knowledge that every user and maintenance person want to grasp. If we are familiar with the important parameters for measuring the performance of a gas chromatograph, we can use these parameters to determine why the instrument is not functioning properly. The most important parameters commonly used to measure the performance of a gas chromatography system are zero current (I_0), noise (σN), sensitivity (S), detection limit (M), linear dynamic range (W_1), response index, instability and drift , Temperature accuracy and pressure stability of the flow rate. First, the impact of operating conditions Gas chromatographic system operating conditions such as carrier gas