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现行 ASTM E1657-98(2019)
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Standard Practice for Testing Variable-Wavelength Photometric Detectors Used in Liquid Chromatography 液相色谱用可变波长光度检测器试验的标准实施规程
发布日期: 2019-12-01
1.1 本规程涵盖了可变波长光度检测器(VWPD)的性能测试,该检测器用作在190至800 nm范围内的一个或多个波长下运行的液相色谱(LC)系统的检测组件。为了与实践保持一致,许多测量是在254 nm处进行的 E685 . 其他波长的测量是可选的。 1.2 本规程旨在描述检测器的性能,该性能独立于色谱系统(静态条件)和流动溶剂(动态条件)。 1.3 有关一般液相色谱程序,请参阅参考文献 ( 1- 9 ) . 2. 1.4 有关液相色谱检测器的原理、结构、操作和评估的一般信息,请参阅参考文献 ( 10 , 11 ) 除了参考文献中专门介绍探测器的章节之外 ( 1- 7. ) . 1.5 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 本标准并非旨在解决与其使用相关的所有安全问题(如有)。本标准的用户有责任在使用前制定适当的安全、健康和环境实践,并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒(TBT)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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 虽然可以在不同和独特的条件下观察和测量探测器的每个特性,但本实践的目的是获得一套完整的探测器规范 在相同的操作条件下。 还应注意的是,为了完全指定探测器的能力,应在探测器有效范围内的几组条件下测量其性能。本实施规程中描述的术语和测试具有足够的通用性,因此无论最终操作参数如何,都可以使用这些术语和测试。 4.2 记录器或其他读出装置的线性度和响应时间应确保不会扭曲或干扰检测器的性能。这需要根据制造商的指示调整增益、阻尼和校准。如果在探测器和最终读出装置之间使用额外的电子滤波器或放大器,也应首先确定其特性。
1.1 This practice covers the testing of the performance of a variable-wavelength photometric detector (VWPD) used as the detection component of a liquid-chromatographic (LC) system operating at one or more wavelengths in the range 190 to 800 nm. Many of the measurements are made at 254 nm for consistency with Practice E685 . Measurements at other wavelengths are optional. 1.2 This practice is intended to describe the performance of the detector both independently of the chromatographic system (static conditions) and with flowing solvent (dynamic conditions). 1.3 For general liquid chromatographic procedures, consult Refs ( 1- 9 ) . 2 1.4 For general information concerning the principles, construction, operation, and evaluation of liquid-chromatography detectors, see Refs ( 10 , 11 ) in addition to the sections devoted to detectors in Refs ( 1- 7 ) . 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 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. 1.7 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 should be obtained under the same operating conditions. It should also be noted that to completely specify a detector’s capability, 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 that they may be used regardless of the ultimate operating parameters. 4.2 Linearity and response time of the recorder or other readout device used should be such that they do not distort or otherwise interfere with the performance of the detector. This requires adjusting the gain, damping, and calibration in accordance with the manufacturer's directions. If additional electronic filters or amplifiers are used between the detector and the final readout device, their characteristics should also first be established.
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归口单位: E13.19
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