Enhanced chromatographic peak-purity evaluation of phenolic solutes using pH-induced spectral transformations

1992 ◽  
Vol 626 (1) ◽  
pp. 127-134 ◽  
Author(s):  
J.B. Castledine ◽  
A.F. Fell ◽  
R. Modin ◽  
B. Sellberg
Keyword(s):  
Chromatographic Peak ◽  
Spectral Transformations ◽  
Purity Evaluation ◽  
Peak Purity

Assessment of chromatographic peak purity by means of artificial neural networks

1996 ◽  
Vol 734 (2) ◽  
pp. 259-270 ◽  
Author(s):  
Yuzhu Hu ◽  
Gewen Zhou ◽  
Jihong Kang ◽  
Yingxiang Du ◽  
Fang Huang ◽  
...  
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Chromatographic Peak ◽  
Artificial Neural ◽  
Peak Purity

scholarly journals A New Concept for Testing Chromatographic Peak Purity: Application to Peak Purity Determination of Main Ingredients in Tea Extracts

2015 ◽  
Vol 27 (10) ◽  
pp. 3831-3837 ◽  
Author(s):  
Marwa S. Moneeb ◽  
Ismail I. Hewala ◽  
Hatem A. Elmongy ◽  
Abdel-Aziz M. Wahbi
Keyword(s):  
Chromatographic Peak ◽  
Purity Determination ◽  
Peak Purity

Determination of Methyl Nonyl Ketone by Liquid Chromatography

1990 ◽  
Vol 73 (5) ◽  
pp. 743-744
Author(s):  
Rodney J Bushway
Keyword(s):  
Mobile Phase ◽  
Array Detector ◽  
Chromatographic Peak ◽  
Corn Cob ◽  
Total Analysis Time ◽  
Coefficients Of Variation ◽  
Total Analysis ◽  
Liquid Chromatographic ◽  
Peak Purity

Abstract A liquid chromatographic (LC) method has been developed to determine methyl nonyl ketone, a dog and cat repellent, In formulations. Corn cob formulations were extracted In acetonltrlle for 1 min using a Polytron mixer; liquid formulations were diluted with acetonitrile. A 10 juL aliquot was Injected Into a Vydac 218 TP54 column, monitored at 280 nm. The mobile phase was acetonitrlle-methanol-water-lsopropanol (225 + 200 + 50 + 25). Total analysis time was 5 min. Six different solid formulations and 5 different liquid formulations were analyzed 6 times with all percent coefficients of variation (% CV) below 4. Purity of each methyl nonyl ketone chromatographic peak was checked using a photodlode array detector In peak purity mode. No Interferences were observed at 280 nm.

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