Study of the temperature-dependent near-infrared spectra of water by two-dimensional correlation spectroscopy and principal components analysis

2006 ◽  
Vol 40 (2) ◽  
pp. 235-245 ◽  
Author(s):  
Bogusława Czarnik-Matusewicz ◽  
Sylwia Pilorz
Keyword(s):  
Principal Components Analysis ◽  
Infrared Spectra ◽  
Principal Components ◽  
Near Infrared ◽  
Correlation Spectroscopy ◽  
Two Dimensional ◽  
Temperature Dependent ◽  
Near Infrared Spectra ◽  
Components Analysis

The use of two-dimensional spectroscopy to interpret the effect of temperature on the near infrared spectra of whisky

2020 ◽  
Vol 28 (3) ◽  
pp. 148-152 ◽  
Author(s):  
Ishita Joshi ◽  
Vi Khanh Truong ◽  
J Chapman ◽  
D Cozzolino
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Infrared Spectra ◽  
Near Infrared ◽  
Infrared Region ◽  
Correlation Spectroscopy ◽  
Alcoholic Beverages ◽  
Effect Of Temperature ◽  
Two Dimensional ◽  
Near Infrared Spectra

The variations in temperature during the analysis of alcoholic beverages are of importance to develop protocols based on near infrared spectroscopy. The objective of this study was to evaluate the effect of increasing temperature on the near infrared spectra of whisky samples using two-dimensional correlation spectroscopy. Whisky samples from different commercial labels were analyzed at four different temperatures (25°C, 35°C, 45°C, and 55°C) using a UV–VIS–NIR instrument. Asynchronous and synchronous two-dimensional correlation spectroscopy was used to reveal the effect of temperature on the near infrared spectra of the samples. The results of this study indicated that temperatures between 40°C and 55°C alter absorption at specific wavelengths in the near infrared region of the whisky samples analyzed. The combination of near infrared spectroscopy with two-dimensional correlation spectroscopy has the potential to dramatically improve the efficiency of analytical laboratories, considering the range of data that can be collected.

Multilevel analysis of temperature dependent near-infrared spectra

Talanta ◽  
2015 ◽  
Vol 131 ◽  
pp. 170-174 ◽  
Author(s):  
Ruifeng Shan ◽  
Yue Zhao ◽  
Mengli Fan ◽  
Xiuwei Liu ◽  
Wensheng Cai ◽  
...  
Keyword(s):  
Multilevel Analysis ◽  
Infrared Spectra ◽  
Near Infrared ◽  
Temperature Dependent ◽  
Near Infrared Spectra
Sign in / Sign up

Export Citation Format

Share Document