Simultaneous continuous, nonchromatographic monitoring and discrete chromatographic monitoring of polymerization reactions

2009 ◽  
Vol 113 (1) ◽  
pp. 190-198 ◽  
Author(s):  
Alina M. Alb ◽  
Michael F. Drenski ◽  
Wayne F. Reed
Keyword(s):  
Chromatographic Monitoring

scholarly journals Automated gas chromatographic monitoring of ethylene evolution out of rice seedlings infected with blast fungus.

1988 ◽  
Vol 52 (12) ◽  
pp. 3159-3161
Author(s):  
Sueo URUSHIZAKI ◽  
Yasuo OTA ◽  
Tetsuya HARUYAMA ◽  
Hiromasa KANO ◽  
Kuniomi MATSUMOTO ◽  
...  
Keyword(s):  
Rice Seedlings ◽  
Ethylene Evolution ◽  
Blast Fungus ◽  
Chromatographic Monitoring

scholarly journals Ion-pair chromatographic monitoring of photographic effluents

2007 ◽  
Vol 5 (2) ◽  
pp. 455-465
Author(s):  
Giedrė Kesiũnaitė ◽  
Birutė Pranaitytė ◽  
Audrius Padarauskas ◽  
Arvydas Dikčius ◽  
Romas Ragauskas
Keyword(s):  
Ionic Strength ◽  
Mobile Phase ◽  
Ion Pair ◽  
Chromatographic Technique ◽  
Two Samples ◽  
Neutral Compounds ◽  
Before And After ◽  
Rapid Monitoring ◽  
Chromatographic Monitoring

AbstractIon-pair chromatographic technique was developed for the rapid and simple determination of the main contaminants (bromide, iodide, sulphite, thiosulphate, thiocyanate, iron(III)-EDTA chelate, free EDTA, hydroquinone and phenidone) in spent photographic solutions. Free EDTA was converted into stable Ni(II)-EDTA chelate prior to analysis. The optimal mobile phase conditions were established by varying the concentrations of tetrabutylammonium (TBA) phosphate and acetonitrile, pH and ionic strength. Separation of five inorganic anions, two metal chelates and two neutral compounds was accomplished in about 30 min using a mobile phase containing 7.5 mmol/L TBA-phosphate, 10 mmol/L NaCl (pH 6.5) and 20% (v/v) acetonitrile. The detection limits (UV detection at 210 nm) ranged from 0.4 µmol/L for phenidone to 8 µmol/L for sulphite with a linearity of 2–2.5 orders of magnitude. The method was applied to the rapid monitoring of spent photographic solutions before and after decomposition. The recovery tests established for two samples were within the range 95–103%.

Chromatographic monitoring of intermediate products of the synthesis of L-ephedrine

1974 ◽  
Vol 8 (1) ◽  
pp. 46-47
Author(s):  
N. M. Ivanova ◽  
E. I. Mikhailovskaya ◽  
S. D. Sokolov
Keyword(s):  
Intermediate Products ◽  
Chromatographic Monitoring
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