Trace Analysis of Sulfonylurea Herbicides in Water:  Extraction and Purification by a Carbograph 4 Cartridge, Followed by Liquid Chromatography with UV Detection, and Confirmatory Analysis by an Electrospray/Mass Detector

1997 ◽  
Vol 69 (14) ◽  
pp. 2819-2826 ◽  
Author(s):  
Antonio Di Corcia ◽  
Carlo Crescenzi ◽  
Roberto Samperi ◽  
Luisa Scappaticcio
Keyword(s):  
Liquid Chromatography ◽  
Trace Analysis ◽  
Uv Detection ◽  
Water Extraction ◽  
Sulfonylurea Herbicides ◽  
Extraction And Purification ◽  
Mass Detector ◽  
Confirmatory Analysis

Reversed phase liquid chromatography trace analysis of pesticides in soil by on-column sample pumping large volume injection and UV detection

2009 ◽  
Vol 32 (12) ◽  
pp. 2034-2042 ◽  
Author(s):  
Milan Hutta ◽  
Mária Chalányová ◽  
Radoslav Halko ◽  
Róbert Góra ◽  
Svetlana Dokupilová ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Large Volume ◽  
Trace Analysis ◽  
Reversed Phase ◽  
Uv Detection ◽  
Reversed Phase Liquid Chromatography ◽  
Large Volume Injection ◽  
Phase Liquid

scholarly journals Analysis of some pharmaceuticals in the presence of their synthetic impurities by applying hybrid micelle liquid chromatography

2020 ◽  
Vol 18 (1) ◽  
pp. 377-390
Author(s):  
Dina El Sherbiny ◽  
Mary E. K. Wahba
Keyword(s):  
Liquid Chromatography ◽  
Sodium Dodecyl Sulfate ◽  
Phosphoric Acid ◽  
Mobile Phase ◽  
Sodium Dodecyl ◽  
Uv Detection ◽  
Stability Indicating ◽  
Photolytic Degradation ◽  
Amino Phenol ◽  
The Stability

AbstractA stability-indicating hybrid micelle liquid chromatography accompanied by UV detection was developed for the simultaneous analysis of either paracetamol (PCA) or pseudoephedrine hydrochloride (PSU) with their synthetic impurities. Mixture I contains PCA with p-amino phenol and p-nitro phenol, while mixture II involves the estimation of PSU with benzaldehyde and benzoic acid. Both mixtures were separated using a C18 column that was thermostatically maintained at 40°C and operating under a flow rate of 1.5 mL/min, applying UV detection at 240 nm for mixture I and 220 nm for mixture II. In both cases, the mobile phase consisted of 0.1 M sodium dodecyl sulfate, acetonitrile, and triethylamine (90:10:0.3, v/v/v) and adjusted to pH 4 (mixture I) or pH 3.7 (mixture II) using 2.0 M O-phosphoric acid. The proposed method was validated and successfully applied to assay different pharmaceuticals containing PCA or PSU. Moreover, the stability-indicating nature of the proposed method was proved through applying photolytic degradation procedures for PCA.

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