Ion Chromatographic Determination of the Decomposition Products of Tecnazene Solution Irradiated by Ultraviolet Light. Inorganic and Organic Anions

2001 ◽  
Vol 49 (6) ◽  
pp. 2848-2852 ◽  
Author(s):  
Pavel Kubáň ◽  
Hugh Flowers
Keyword(s):  
Ultraviolet Light ◽  
Chromatographic Determination ◽  
Organic Anions ◽  
Decomposition Products ◽  
Inorganic And Organic

A Syringe Gas-Stripping Procedure for Gas-Chromatographic Determination of Dissolved Inorganic and Organic Carbon in Fresh Water and Carbonates in Sediments

1973 ◽  
Vol 30 (10) ◽  
pp. 1441-1445 ◽  
Author(s):  
Michael P. Stainton
Keyword(s):  
Organic Carbon ◽  
Gas Phase ◽  
Atmospheric Pressure ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Chromatographic Determination ◽  
Canadian Shield ◽  
Gas Stripping ◽  
Inorganic And Organic

A simple, rapid method for determining dissolved inorganic carbon in water is described. A 20-cm3 sample of water is drawn into a 50-cm3 polypropylene syringe and acidified by injection of 1 cm3 of dilute sulphuric acid. Twenty-nine cubic centimeters of helium at atmospheric pressure is injected into the syringe followed by 10 sec of manual agitation to partition CO2 between gas and liquid phase. The gas phase containing 60% of CO2 from the sample is then analyzed by gas chromatography. This method has been used to determine dissolved inorganic and organic carbon in Canadian Shield waters and to determine total carbonates in sediments.

Quantitative Thin Layer Chromatographic Determination of Furazolidone and Nitrofurazone in Animal Feeds

1978 ◽  
Vol 61 (1) ◽  
pp. 92-95
Author(s):  
Ugo R Cieri
Keyword(s):  
Thin Layer ◽  
Ultraviolet Light ◽  
Internal Standard ◽  
Chromatographic Determination ◽  
Animal Feeds ◽  
Recording Spectrophotometer ◽  
Tungsten Lamp

Abstract A method is presented for determining the nitrofurans furazolidone and nitrofurazone in animal feeds. The sample is extracted with acetone, and aliquots of the concentrated extract are spotted on thin layer chromatographic fluorescent plates. After development in CHCl3-methanol (90+10), the bands containing the nitrofurans are detected under shortwave ultraviolet light, scraped from the plate, and extracted with ethanol. The centrifuged extracts are scanned from 500 to 300 nm on a recording spectrophotometer with a tungsten lamp, and the absorbance maxima near 360 nm are used for quantitation. To compensate for extraction and chromatographic losses and for other interferences, the nitrofuran not present in the sample is added as an internal standard. The method is generally not applicable at a level below 0.005% since detection of the bands becomes difficult.

Capillary electrophoretic method for the determination of inorganic and organic anions in real samples

2007 ◽  
Vol 1144 (2) ◽  
pp. 275-278 ◽  
Author(s):  
Gustavo A. Blanco-Heras ◽  
Ma Isabel Turnes-Carou ◽  
Purificación López-Mahía ◽  
Soledad Muniategui-Lorenzo ◽  
Darío Prada-Rodríguez ◽  
...  
Keyword(s):  
Organic Anions ◽  
Electrophoretic Method ◽  
Real Samples ◽  
Capillary Electrophoretic ◽  
Inorganic And Organic
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