1.1 本实践包括测试用作气相色谱系统检测部件的氮/磷热离子化检测器（NPD）的性能。 1.2 该实践适用于使用加热的碱金属化合物并从该固体表面发射电荷的NPD。 1.3 本实践涉及独立于色谱柱的NPD的操作和性能。然而，当检测器连接到色谱柱和其他色谱组件时，分析人员可以使用该性能来预测整体系统性能。 1.4 对于一般色谱程序，实践 E260 应遵循，除非本实践中建议对氮/磷（N/P）热离子检测器的使用进行特定更改。1.5 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 有关具体安全信息，请参见第节 5 ，危害。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 4.1 尽管可以在不同和独特的条件下观察和测量检测器的几个特性中的每一个，但本实践的目的是在相同的操作条件下获得完整的检测器规格集，包括ge测量、流速和温度。为了完全确定探测器的能力，应该在探测器有用范围内的几组条件下测量其性能。本实施例中描述的术语和测试足够通用，使得它们可以在任何选择的条件下使用。 4.2 记录器的线性和响应速度应使其不失真或以其他方式干扰检测器的性能。有效的记录器响应应足够快，以便其对测量灵敏度的影响可以忽略不计。如果在探测器和最终读出设备之间使用附加放大器，则应首先确定其特性。

1.1 This practice covers testing the performance of a nitrogen/phosphorus thermionic ionization detector (NPD) used as the detection component of a gas chromatographic system. 1.2 This practice applies to an NPD that employs a heated alkali metal compound and emits an electrical charge from that solid surface. 1.3 This practice addresses the operation and performance of the NPD independently of the chromatographic column. However, the performance is specified in terms that the analyst can use to predict overall system performance when the detector is coupled to the column and other chromatographic components. 1.4 For general chromatographic procedures, Practice E260 should be followed except where specific changes are recommended in this practice for the use of a nitrogen/phosphorus (N/P) thermionic detector. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific safety information, see Section 5 , Hazards. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 Although it is possible to observe and measure each of the several characteristics of a detector under different and unique conditions, it is the intent of this practice that a complete set of detector specifications be obtained at the same operating conditions, including geometry, flow rates, and temperatures. To specify a detector's capability completely, its performance should be measured at several sets of conditions within the useful range of the detector. The terms and tests described in this practice are sufficiently general so that they may be used under any chosen conditions. 4.2 Linearity and speed of response of the recorder should be such that it does not distort or otherwise interfere with the performance of the detector. Effective recorder response should be sufficiently fast so that its effect on the sensitivity of measurement is negligible. If additional amplifiers are used between the detector and the final readout device, their characteristics should first be established.