Determination of phenolic antioxidants in polypropylene by derivative ultraviolet spectroscopy

The Analyst ◽  
1982 ◽  
Vol 107 (1275) ◽  
pp. 623-628 ◽  
Author(s):  
J. Souček ◽  
E. Jelínková
Keyword(s):  
Phenolic Antioxidants ◽  
Ultraviolet Spectroscopy

Preconcentration of synthetic phenolic antioxidants by using magnetic zeolites derived with carboxylatocalix[4]arenes combined with high performance liquid chromatography

The Analyst ◽  
2015 ◽  
Vol 140 (17) ◽  
pp. 5944-5952 ◽  
Author(s):  
Shaoyan Zhou ◽  
Zheng Li ◽  
Xueju Lv ◽  
Bin Hu ◽  
Qiong Jia
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Phenolic Antioxidants ◽  
Magnetic Zeolite ◽  
Synthetic Phenolic Antioxidants

A hybrid adsorbent assembling carboxylatocalix[4]arene onto the surface of magnetic zeolite was prepared and used for the preconcentration and determination of synthetic phenolic antioxidants coupled with HPLC.

scholarly journals Rapid Determination of Aesculin, Aesculetin and Fraxetin inCortex FraxiniExtract Solutions Based on Ultraviolet Spectroscopy

2011 ◽  
Vol 8 (s1) ◽  
pp. S225-S236 ◽  
Author(s):  
Ming Yang ◽  
Jia-Lei Chen ◽  
Xiu-Feng Shi ◽  
Hui-Jue Niu
Keyword(s):  
Root Mean Square Error ◽  
Reference Data ◽  
Rapid Determination ◽  
Ultraviolet Spectroscopy ◽  
Mean Square ◽  
Chemical Parameters ◽  
Ultraviolet Spectra ◽  
Calibration Models ◽  
The Relationship

To evaluate the application of ultraviolet spectroscopy for the rapid determination of aesculin, aesculetin and fraxetin inCortex fraxiniextract solutions, ultraviolet spectra ofCortex fraxiniextract solutions from different batches were collected in the spectral range from 200 nm to 400 nm. The relationship between ultraviolet spectra and chemical parameters displayed some non-linear characteristics. Thus, K-OPLS was proposed to establish the calibration models for the determination ofCortex fraxiniextract solutions between the reference data and ultraviolet spectra. The calibration results were achieved for the determination ofCortex fraxiniextract solutions. The coefficients of determination in calibration (R2) for aesculin, aesculetin and fraxetin were 0.989, 0.957 and 0.939, while in prediction (R2) were 0.982, 0.979 and 0.962, respectively. And the root-mean-square error of prediction (RMSEP) for aesculin, aesculet and fraxetin were 11.99, 3.02 and 1.59 μg/mL. The results demonstrated that ultraviolet spectroscopy could be used for the rapid determination of these three components inCortex fraxiniextract solutions.

Determination of phenolic antioxidants in aviation jet fuel

2000 ◽  
Vol 871 (1-2) ◽  
pp. 235-241 ◽  
Author(s):  
M Bernabei ◽  
G Bocchinfuso ◽  
P Carrozzo ◽  
C De Angelis
Keyword(s):  
Jet Fuel ◽  
Phenolic Antioxidants
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