scholarly journals Rapid Determination of Inorganic Sulfur in Various Forms, Particularly in Sulfide Ores, by the Tin (II)-Strong Phosphoric Acid Reduction Method

1957 ◽  
Vol 30 (9) ◽  
pp. 972-975 ◽  
Author(s):  
Toshiyasu Kiba ◽  
Ikuko Akaza ◽  
Nobuyuki Sugishita
Keyword(s):  
Phosphoric Acid ◽  
Reduction Method ◽  
Rapid Determination ◽  
Sulfide Ores ◽  
Inorganic Sulfur ◽  
Acid Reduction

scholarly journals Microcolorimetric Determination of Organic Sulfur by the Tin(II)-Strong Phosphoric Acid Reduction Method

1957 ◽  
Vol 30 (5) ◽  
pp. 482-486 ◽  
Author(s):  
Toshiyasu Kiba ◽  
Ikuko Akaza ◽  
née Kishi ◽  
Sachiko Taki
Keyword(s):  
Phosphoric Acid ◽  
Reduction Method ◽  
Organic Sulfur ◽  
Acid Reduction

scholarly journals Rapid Determination of Nosiheptide in Meat and Egg by Liquid Chromatography with Fluorescence Detection

2000 ◽  
Vol 83 (1) ◽  
pp. 17-19 ◽  
Author(s):  
Shozo Horii ◽  
Naoto Oku
Keyword(s):  
Liquid Chromatography ◽  
Phosphoric Acid ◽  
Fluorescence Detection ◽  
Mobile Phase ◽  
Lower Layer ◽  
Rapid Determination ◽  
Chicken Muscle

Abstract A procedure was developed to determine nosiheptide residues in marketed meat and egg. Acetonitrile was used for the extraction, and the extract was partitioned with hexane to remove fat. The lower layer was reconstructed and quantitated by liquid chromatography using fluorescence detection at 357 nm excitation and 500 nm emission. The mobile phase consisted of 0.025% phosphoric acid–acetonitrile (50 + 50, v/v). Recoveries of nosiheptide from fortified samples ranged from 91.3 to 95.2% for swine muscle, 88.6 to 92.7% for chicken muscle, and 86.3 to 86.8% for egg. The method was used to monitor swine and chicken muscle and egg (20 samples each) in the market. Nosiheptide was not determined in all 60 samples.

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