Liquid chromatographic analysis of bentazone in the presence of soil and some of its normal constituents, with photodiode array detection

1992 ◽  
Vol 123-124 ◽  
pp. 57-61 ◽  
Author(s):  
F. Sánchez Rasero ◽  
M.E. Báez ◽  
C.G. Dios
Keyword(s):  
Chromatographic Analysis ◽  
Photodiode Array Detection ◽  
Photodiode Array ◽  
Array Detection ◽  
Liquid Chromatographic Analysis ◽  
Liquid Chromatographic

Photodiode array detection for liquid chromatographic profiling of carboxylic acids in physiological fluids: 3-hydroxy-3-methylglutaric aciduria.

1986 ◽  
Vol 32 (1) ◽  
pp. 169-171 ◽  
Author(s):  
D N Buchanan ◽  
J G Thoene
Keyword(s):  
High Performance Liquid Chromatography ◽  
High Performance ◽  
Dietary Therapy ◽  
Photodiode Array Detection ◽  
Photodiode Array ◽  
Array Detection ◽  
Computer Controlled ◽  
Dual Column ◽  
Liquid Chromatographic ◽  
Chromatographic Profiling

Abstract 3-Hydroxy-3-methylglutaric aciduria was detected in a newborn. The progress of the dietary therapy for the disorder was monitored by dual-column "high-performance" liquid chromatography with a computer-controlled photodiode array spectrophotometric detector. This procedure is a quick way to detect and monitor the progress of 3-hydroxy-3-methylglutaric aciduria.

scholarly journals Liquid Chromatographic Determination of Five Benzoylurea Insecticides in Fruit and Vegetables

1998 ◽  
Vol 81 (5) ◽  
pp. 1037-1042 ◽  
Author(s):  
Miguel Gamón ◽  
Adolfo Saez ◽  
Rosa Pelegrí ◽  
Inmaculada Peris ◽  
Josá G De La Cuadra ◽  
...  
Keyword(s):  
Solid Phase ◽  
Chromatographic Determination ◽  
Photodiode Array Detection ◽  
Photodiode Array ◽  
Array Detection ◽  
Liquid Chromatographic Determination ◽  
Benzoylurea Insecticides ◽  
Vegetables And Fruits ◽  
Liquid Chromatographic

Abstract A liquid chromatographic (LC) method was developed to determine 5 benzoyl ureas—diflubenzuron, hexaflumuron, teflubenzuron, flufenozuron, and lufenuron—in peppers, tomatoes, eggplants, cucumbers, and oranges. Preparation of samples involve extraction with acetone and partitioning into dichloromethane-petroleum ether. A portion of this extract is cleaned up with a solid-phase extraction aminopropyl disposable column. With LC analysis using an RP-8-DB microbore column, acetonitrilewater (70 + 30, v/v) as mobile phase, and photodiode array detection at 254 nm, recovery and repeatability data were collected for the 5 benzoylureas on 4 vegetables and citrus in the range 0.04-2.0 mg/kg. Validated limits of detection and quantitation were 0.01 and 0.04 mg/kg, respectively. The method is reliable for routine analysis of vegetables and fruits

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