High-performance liquid chromatographic determination of spironolactone and its major metabolite canrenone in urine using ultraviolet detection and column-switching

1994 ◽  
Vol 658 (2) ◽  
pp. 303-310 ◽  
Author(s):  
Rosa Herráez-Hernández ◽  
Eva Soriano-Vega ◽  
Pilar Campíns-Falcó
Keyword(s):  
High Performance ◽  
Chromatographic Determination ◽  
High Performance Liquid Chromatographic ◽  
Column Switching ◽  
Major Metabolite ◽  
Ultraviolet Detection ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Rapid Method for Extraction and Reverse Phase Liquid Chromatographic Determination of Paraquat Residues in Water

1983 ◽  
Vol 66 (3) ◽  
pp. 663-666
Author(s):  
Ijaz Ahmad
Keyword(s):  
High Performance ◽  
Chromatographic Determination ◽  
High Performance Liquid Chromatographic ◽  
Reverse Phase ◽  
Ultraviolet Detection ◽  
Liquid Chromatographic Determination ◽  
Phase Liquid ◽  
Low Levels ◽  
Liquid Chromatographic

Abstract A simple and fast analytical method is described for the quantitative determination of low levels of paraquat residues in water. The method involves extraction and concentration of paraquat in water by using a C18 Sep-Pak cartridge followed by reverse phase high performance liquid chromatographic determination with ultraviolet detection at 257 nm. Recoveries of paraquat from spiked samples were above 93% with a coefficient of variation of 6.1%. The method can be used for water samples with paraquat concentrations as low as 0.05 ppm.

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