Resolvability indices and variable selection in factor analysis of diode-array high-performance liquid chromatography: development of an approach for multi-peak clusters and application to mixtures of chlorophyll degradation products

The Analyst ◽  
1995 ◽  
Vol 120 (8) ◽  
pp. 2207 ◽  
Author(s):  
Abdallah K. Elbergali ◽  
Richard G. Brereton ◽  
Ali Rahmani
Keyword(s):  
Factor Analysis ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Variable Selection ◽  
High Performance ◽  
Degradation Products ◽  
Chlorophyll Degradation ◽  
Diode Array

A Simple Method for the Determination of Carbaryl and 1-Naphthol in Fruit Juices by High-Performance Liquid Chromatography–Diode-Array Detection

2003 ◽  
Vol 66 (8) ◽  
pp. 1510-1513 ◽  
Author(s):  
GÜL ÖZHAN ◽  
SIBEL TOPUZ ◽  
BUKET ALPERTUNGA
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Fruit Juice ◽  
Degradation Products ◽  
Diode Array ◽  
Diode Array Detection ◽  
Simple Method ◽  
Array Detection

Carbaryl (Sevin) is a widely used N-methylcarbamate insecticide. In this study, a simple and sensitive reversed-phase, high-performance liquid chromatography method with diode-array detection has been developed for the determination of low levels of carbaryl and its degradation products 1-naphthol in several kinds of canned pure fruit juice. The compounds were captured on a C18 cartridge. The analytes were separated on a C18 column using a linear gradient of 40 to 60% acetonitrile in water in a period of 20 min. The extraction recoveries of carbaryl and 1-naphthol were in the range 93.5 to 98.0% and 90.7 to 96.0% for fruit juice, respectively. The detection limit was below 0.8 ng/ml and the calibration curves showed good linearity between 0.9998 and 0.9999.

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