Liquid modifiers in reversed-phase liquid chromatography with graphitized carbon black adsorbents

1983 ◽  
Vol 269 ◽  
pp. 47-60 ◽  
Author(s):  
P. Ciccioli ◽  
R. Tappa
Keyword(s):  
Liquid Chromatography ◽  
Carbon Black ◽  
Reversed Phase ◽  
Graphitized Carbon Black ◽  
Reversed Phase Liquid Chromatography ◽  
Graphitized Carbon ◽  
Phase Liquid

Determination of Phenol Pollutants in Water at Trace Levels: Extraction by a Reversible Graphitized Carbon Black Cartridge

1994 ◽  
Vol 77 (2) ◽  
pp. 446-453 ◽  
Author(s):  
Antonio Di Corcia ◽  
Stefano Marchese ◽  
Roberto Samperi ◽  
Giancarlo Cecchini ◽  
Luciano Cirilli
Keyword(s):  
Carbon Black ◽  
Environmental Protection Agency ◽  
Fulvic Acids ◽  
Reversed Phase ◽  
Graphitized Carbon Black ◽  
Water Soluble ◽  
Array Detector ◽  
Graphitized Carbon ◽  
Soluble Phenols ◽  
Phase Liquid

Abstract A method for determining the 11 phenols designated as priority pollutants by the U.S. Environmental Protection Agency at the parts-per-trillion level in water sampled from the environment is described. Drinking (2 L), ground (1.5 L), and river (0.5 L) water samples are preconcentrated by passing them through a 1 g graphitized carbon black (GCB) reversible cartridge at a flow rate of approximately 70 mL/min. After the GCB cartridge is washed with 1.5 mL methanol to eliminate water, the cartridge is reversed and then back-flushed with an acidic CH2Cl2-CH3OH mixture for eluting phenols. After partial solvent removal, the sample is subjected to reversed-phase liquid chromatography with UV detection by either a conventional or a diode-array detector. Recoveries of phenols added to 2 L of drinking water at levels between 0.05 and 4 μg/L were higher than 90%. Compared with an oc-tadecyl bonded silica (C18) cartridge, the GCB cartridge had a far better extraction efficiency for the more highly water-soluble phenols. The extent to which the presence of fulvic acids in water affected the recovery of the phenols considered was investigated.

Study on Retention Equation for Protein in Reversed Phase Liquid Chromatography

2013 ◽  
Vol 41 (2) ◽  
pp. 181
Author(s):  
Ling DING ◽  
Jun DONG ◽  
Yuan-Sheng XIAO ◽  
Xiu-Li ZHANG ◽  
Xing-Ya XUE ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Reversed Phase ◽  
Reversed Phase Liquid Chromatography ◽  
Retention Equation ◽  
Phase Liquid

Interpretive Approaches to Optimize Serially-Coupled Columns in Reversed-Phase Liquid Chromatography

2015 ◽  
Vol 2 (2) ◽  
pp. 110-121 ◽  
Author(s):  
Tamara Alvarez-Segura ◽  
María García-Alvarez-Coque ◽  
Casandra Ortiz-Bolsico ◽  
José Torres-Lapasió
Keyword(s):  
Liquid Chromatography ◽  
Reversed Phase ◽  
Reversed Phase Liquid Chromatography ◽  
Coupled Columns ◽  
Phase Liquid ◽  
Serially Coupled Columns
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