This practice permits an analyst to compare the general performance of an instrument on any given day with the prior performance of an instrument. This practice is not necessarily meant for comparison of different instruments with each other even if the instruments are of the same type and model. This practice is not meant for comparison of the performance of one instrument operated under differing conditions.
1.1 This practice describes two levels of tests to measure the performance of laboratory Fourier transform mid-infrared (FT-MIR) spectrometers equipped with a standard sample holder used for transmission measurements.
1.2 This practice is not directly applicable to Fourier transform infrared (FT-IR) spectrometers equipped with various specialized sampling accessories such as flow cells or reflectance optics, nor to Fourier transform near-infrared (FT-NIR) spectrometers, nor to FT-IR spectrometers run in step scan mode.
1.2.1 If the specialized sampling accessory can be removed and replaced with a standard transmission sample holder, then this practice can be used. However, the user should recognize that the performance measured may not reflect that which is achieved when the specialized accessory is in use.
1.2.2 If the specialized sampling accessory cannot be removed, then it may be possible to employ a modified version of this practice to measure spectrometer performance. The user is referred to Guide E 1866
1.2.3 Spectrometer performance tests for FT-NIR spectrometers are described in Practice E 1944
1.2.4 Performance tests for dispersive MIR instruments are described in Practice E 932
1.2.5 For FT-IR spectrometers run in a step scan mode, variations on this practice and information provided by the instrument vendor should be used.
芯片级FT-IR光谱仪开启智能应用新时代近红外光谱已经广泛应用于科研、工业、农业、制药以及食品安全等领域的定性及定量物质分析。然而近红外光谱仪一直以来都因为体积大、价格高等问题限制了其在消费级产品中的应用。如今随着MEMS和ASIC技术的发展,Si-Ware公司推出了世界上最小的芯片级傅里叶红外光谱仪NeoSpectra Micro。...
在对样品进行定性与定量分析时,例如医药化工、宝石鉴定、地矿、石油、煤炭、环保、海关、刑侦鉴定等领域,经常会用傅里叶红外光谱仪来进行检测分析,而其所利用的技术是傅里叶转换红外光谱,不少人了解仪器的原理,那么其使用的技术,又了解多少呢? 关于傅里叶转换红外光谱 傅里叶转换红外光谱 (FTIR)是一种用来获得固体, 液体或气体的红外线吸收光谱和放射光谱的技术。...
在对样品进行定性与定量分析时,例如医药化工、宝石鉴定、地矿、石油、煤炭、环保、海关、刑侦鉴定等领域,经常会用傅里叶红外光谱仪来进行检测分析,而其所利用的技术是傅里叶转换红外光谱,不少人了解仪器的原理,那么其使用的技术,又了解多少呢? 关于傅里叶转换红外光谱 傅里叶转换红外光谱 (FTIR)是一种用来获得固体, 液体或气体的红外线吸收光谱和放射光谱的技术。...
作为常见的光谱仪器,我们在诸多分析实验室里都可以见到傅里叶红外光谱仪(FT-IR)的身影,它广泛应用于医药化工、地矿、石油、煤炭、环保、宝石鉴定、刑侦鉴定等领域。由于水和二氧化碳的存在会在红外线光谱中增加背景噪声,所以FT-IR的吹扫气需要采用不含二氧化碳和碳氢化合物的干燥空气。...
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