FTIR可以分析样品内部较深层次的成分和结构。 ATR主要分析样品表面的成分和结构,因为ATR的“蒸发场”只能穿透样品几微米深。 样品量: ATR通常需要的样品量比普通FTIR少,因为ATR晶体的表面积相对较小,适用于样品有限或昂贵的情况。 综上所述,FTIR和ATR在红外光谱分析中各有优势,选择哪种方法取决于具体的分析需求和...
ATR-FTIR spectroscopy and spectroscopic imaging for the analysis of biopharmaceuticals. Spectrochim. Acta A Mol. Biomol. Spectrosc. 2020;241:118636. doi:10.1016/j.saa.2020.118636 [13] Kümmel T, van Marwick B, Rittel M, et al. Rapid brain st...
反射光谱包括内反射光谱、镜反射光谱和漫反射光谱,其中以内反射光谱技术(Internal Reflection Spectroscopy) 应用为多。内反射光谱也叫衰减全反射(ATR)光谱,简称ATR 谱,它以光辐射两种介质的界面发生全内反射为基础。如图1 所示,当满足条件: 介质1( 反射元件) 的折射率n1大于介质2(样品)的折射率n2,即从光密介质进...
3.S. Guo et al., “Fast and Deep Diagnosis Using Blood-Based ATR-FTIR Spectroscopy for Digestive Tract Cancers,” Biomolecules, vol. 12, no. 12, pp. 1–15, 2022. 4.S. Roy et al., “Spectroscopy goes viral: Diagnosis of hepatitis B and C virus infection from human sera using ATR-...
ATR-FTIR SpectroscopyGrdadolnik, Joze
4.C.Smith, The Infrared Spectra of Polymers II: Polyethylene. Spectroscopy 24–29 (2021); 5.C.Smith, The infrared spectra of polymers, part I: Introduction. Spectrosc. (Santa Monica) 36, 17–22 (2021); 6.R. Jung et al., Validation of ATR FT-IR to identify polymers of plastic marin...
本文通过血清样本的生物指纹图谱测试,表明IR5对生物液体分析的高灵敏度。IR5傅里叶变换红外光谱仪配备加热ATR附件,克服了样品含水的问题。使用加热ATR附件,在不降低光谱质量的情况下,使光谱采集所需的干燥时间大大缩短。 参考文献 1.T. Soares Martins et al., “Potential of FTIR Spectroscopy Applied to Exosomes...
FTIR stands for Fourier transform infrared, the preferred method of infrared spectroscopy. When IR radiation is passed through a sample, some radiation is absorbed by the sample and some passes through (is trans...
FTIR stands for Fourier transform infrared, the preferred method of infrared spectroscopy. When IR radiation is passed through a sample, some radiation is absorbed by the sample and some passes through (is transmitted). The result...
[1]Noake, E., Lau, D. & Nel, P. Identification of cellulose nitrate based adhesive repairs in archaeological pottery of the University of Melbourne’s Middle Eastern archaeological pottery collection using portable FTIR-ATR spectroscopy and PCA. Herit Sci 5, 3 (2017). ...