Determination of sub-nanogram per gram quantities of light hydrocarbons (C2-C9) in rock samples by hydrogen stripping in the flow system of a capillary gas chromatograph

1978 ◽  
Vol 50 (13) ◽  
pp. 1848-1854 ◽  
Author(s):  
Rainer G. Schaefer ◽  
Bernd. Weiner ◽  
Detlev. Leythaeuser
Keyword(s):  
Flow System ◽  
Gas Chromatograph ◽  
Light Hydrocarbons ◽  
Rock Samples

Improved Cleanup and Derivatization for Gas Chromatographic Determination of Monosodium Glutamate in Foods

1983 ◽  
Vol 66 (6) ◽  
pp. 1528-1531 ◽  
Author(s):  
Hiroshi Nakanishi
Keyword(s):  
Glutamic Acid ◽  
Acid Derivative ◽  
Monosodium Glutamate ◽  
Chromatographic Determination ◽  
Flame Ionization Detection ◽  
Gas Chromatograph ◽  
Flame Ionization ◽  
Acetone Water ◽  
Chromatographic Procedure

Abstract A gas chromatographic procedure is described for determining monosodium glutamate (MSG) in several types of food. A sample is extracted with acetone- water (1 + 1). Acetone is evaporated and an aliquot of the extract is buffered with 1M NH4OH-1M NH4CI pH 9 solution, and chromatographed directly on a column of QAE Sephadex A-25 that has been pretreated with the same buffer. MSG is eluted with 0.1N HC1, and a portion of the eluate is evaporated to dryness and reacted with dimethylformamide( DMF)-dimethylacetal to form the glutamic acid derivative, which is injected into a gas chromatograph and measured by flame ionization detection. Recoveries of MSG from sample fortified at 5-500 mg ranged from 92.8 to 100%.

Determination of fast ozone oxidation rate for textile dyes by using a continuous quench-flow system

2010 ◽  
Vol 178 (1-3) ◽  
pp. 57-65 ◽  
Author(s):  
Arlindo C. Gomes ◽  
José C. Nunes ◽  
Rogério M.S. Simões
Keyword(s):  
Oxidation Rate ◽  
Flow System ◽  
Textile Dyes ◽  
Ozone Oxidation

scholarly journals Multi-pumping flow system for the determination of dissolved orthophosphate and dissolved organic phosphorus in wastewater samples

2006 ◽  
Vol 572 (1) ◽  
pp. 148-154 ◽  
Author(s):  
Carmen Pons ◽  
Ildikó V. Tóth ◽  
António O.S.S. Rangel ◽  
Rafael Forteza ◽  
Víctor Cerdà
Keyword(s):  
Flow System ◽  
Organic Phosphorus ◽  
Dissolved Organic Phosphorus ◽  
Wastewater Samples

Chemiluminescence flow system for the determination of Fe(II) and Fe(III) in water

1998 ◽  
Vol 360 (1) ◽  
pp. 130-132 ◽  
Author(s):  
W. Qin ◽  
Z. J. Zhang ◽  
F. C. Wang
Keyword(s):  
Flow System

Determination of trace amounts of mercury in rock samples

1975 ◽  
Vol 63 (1) ◽  
pp. 69-77 ◽  
Author(s):  
G. L. Corte ◽  
L. Dubois
Keyword(s):  
Rock Samples

Application of direct-injection detector integrated with the multi-pumping flow system to chemiluminescence determination of the total polyphenol index

2016 ◽  
Vol 911 ◽  
pp. 82-91 ◽  
Author(s):  
Edyta Nalewajko-Sieliwoniuk ◽  
Magdalena Iwanowicz ◽  
Sławomir Kalinowski ◽  
Anatol Kojło
Keyword(s):  
Flow System ◽  
Direct Injection ◽  
Total Polyphenol
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