Quantitative analysis of thiamine hydrochloride in tablets—Comparison of infrared attenuated total reflection, diffuse reflectance infrared and Raman spectroscopy

2012 ◽  
Vol 62 ◽  
pp. 10-16 ◽  
Author(s):  
Sylwester Mazurek ◽  
Roman Szostak
Keyword(s):  
Raman Spectroscopy ◽  
Quantitative Analysis ◽  
Diffuse Reflectance ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Thiamine Hydrochloride ◽  
Infrared And Raman Spectroscopy ◽  
Diffuse Reflectance Infrared

scholarly journals Detonation Nanodiamonds: A Comparison Study by Photoacoustic, Diffuse Reflectance, and Attenuated Total Reflection FTIR Spectroscopies

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2501
Author(s):  
Dmitry S. Volkov ◽  
Petr K. Krivoshein ◽  
Mikhail A. Proskurnin
Keyword(s):  
Diffuse Reflectance ◽  
Depth Profiling ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Comparison Study ◽  
Absorption Bands ◽  
Full Characterization ◽  
Ftir Spectrometry ◽  
Out Of Plane

The qualitative analysis of nanodiamonds by FTIR spectrometry as photoacoustic (FTIR–PAS), diffuse-reflectance (DRIFT), and attenuated total reflection (ATR) modalities was evaluated for rapid and nondestructive analysis and comparison of nanodiamonds. The reproducibility and signal-gathering depth of spectra was compared. The assignment of characteristic bands showed that only six groups of bands were present in spectra of all the modalities with appropriate sensitivity: 1760 (C=O stretch, isolated carboxyl groups); 1640–1632 (H–O–H bend, liquid water); 1400–1370 (non-carboxyl C–O–H in-plane bend and CH2 deformation); 1103 (non-carboxyl C–O stretch); 1060 (in-plane C–H bend, non-aromatic hydrocarbons and carbohydrates); 940 cm−1 (out-of-plane carboxyl C–O–H bend). DRIFT provides the maximum number of bands and is capable of measuring hydrogen-bonded bands and CHx groups. ATR provides the good sensitivity for water and C–H/C–C bands in the range 2000–400 cm−1. FTIR–PAS reveals less bands than DRIFT but more intense bands than ATR–FTIR and shows the maximum sensitivity for absorption bands that do not appear in ATR-IR spectra and are expedient for supporting either DRIFT or FTIR–PAS along with depth-profiling. Thus, all three modalities are required for the full characterization of nanodiamonds surface functional groups.

scholarly journals Quantitative analysis of total hydrocarbons and water in oil-contaminated soils with attenuated total reflection infrared spectroscopy

2016 ◽  
Vol 31 (8) ◽  
pp. e2826 ◽  
Author(s):  
Alena Guryanova ◽  
Vasiliy Ermakov ◽  
Vladislav Galyanin ◽  
Viacheslav Artyushenko ◽  
Tatiana Sakharova ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Quantitative Analysis ◽  
Contaminated Soils ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Total Hydrocarbons
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