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现行 ASTM E2729-16(2021)
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Standard Practice for Rectification of Spectrophotometric Bandpass Differences 分光光度带通差校正的标准实施规程
发布日期: 2021-06-01
1.1 本标准概述了可用于至少部分解卷积通过简化分光光度法获得的原始光谱数据的光谱带通差的方法。引入这种差异是因为光谱通带必须具有显著的带宽,以允许足够的能量到达检测器。另一方面,应报告的光谱数据是虚拟1 nm带宽光谱的光谱数据,以便在涉及1 nm求和的三刺激积分CIE方法中有用。 1.2 本标准确立了是否、何时以及如何对通过简化分光光度法获得的任何反射光谱或透射光谱进行带通校正的实践。 1.3 它适用于通带形状为三角形且带宽等于通带之间的测量间隔的情况。第节提供了信息 7. 当用户不能满意地满足该条件时。 1.4 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。 1.5 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====== 5.1 未能进行此类校正会导致频谱的真实值相差约0.02至0.4ΔE* ab公司 单位。要求所有用户纠正此类带通差异。计算机程序的编写者尤其有责任从仪器中获取此类光谱,以确保在对光谱进行任何额外处理之前,或在完成涉及光谱的计算之前,或在向用户提供光谱之前,在程序中执行有效的校正。 5.2 传统测量系统明确免除了硬件或软件改装的任何要求,并且可以继续使用以前接受的带宽校正方法。
1.1 This standard outlines the methods that can be used to deconvolve, at least partially, the spectral bandpass differences of raw spectral data acquired by abridged spectrophotometry. Such differences are introduced because the spectral passband must be of significant bandwidth to allow sufficient energy to reach the detector. On the other hand, the spectral data that should be reported is that of a virtual 1-nm bandwidth spectrum in order to be useful in the CIE method of tristimulus integration which involves 1-nm summation. 1.2 The standard establishes practices for whether, when, and how a bandpass rectification should be made to any reflectance or transmittance spectrum acquired by abridged spectrophotometry. 1.3 It is applicable where the shape of the passband is triangular and the bandwidth is equal to the measurement interval between passbands. Information is provided in Section 7 for users when that condition is not satisfactorily met. 1.4 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. 1.5 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 ====== 5.1 Failure to make such a rectification introduces differences from the true value of the spectrum of about 0.02 to 0.4 ΔE* ab units. All users are required to make a rectification of such bandpass differences. It is especially incumbent upon writers of computer programs whose function it is to acquire such spectra from instruments to see that a competent rectification is implemented in the program before any additional processing of the spectrum, or calculations involving the spectrum are accomplished, or before the spectrum is made available to a user. 5.2 Legacy measuring systems are explicitly exempted from any requirements for retrofitting of hardware or software and may continue to utilize previously accepted methods of making the bandwidth rectification.
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归口单位: E12.04
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