Determination of 5′-nucleotides by automated ion-exchange column chromatography

1981 ◽  
Vol 210 (1) ◽  
pp. 186-187 ◽  
Author(s):  
Sidney S. Chen ◽  
Dar-San Hsu
Keyword(s):  
Ion Exchange ◽  
Column Chromatography ◽  
Exchange Column ◽  
Ion Exchange Column

Rapid Method for the Determination of Diaminopimelic Acid Using Ion Exchange Column Chromatography

1995 ◽  
Vol 28 (11) ◽  
pp. 2049-2061 ◽  
Author(s):  
Janos Csapó ◽  
Zsuzsanna Csapo-Kiss ◽  
Endre Csordás ◽  
Truman G. Martin ◽  
Staffan Folestad ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Rapid Method ◽  
Column Chromatography ◽  
Diaminopimelic Acid ◽  
Exchange Column ◽  
Ion Exchange Column

Quantitative Method for Estimating Fecal Amino Acids

1975 ◽  
Vol 21 (10) ◽  
pp. 1437-1440 ◽  
Author(s):  
Christopher W I Owens ◽  
Walfredo Padovan
Keyword(s):  
Amino Acids ◽  
Ion Exchange ◽  
Column Chromatography ◽  
Quantitative Method ◽  
Normal Values ◽  
Amino Nitrogen ◽  
Exchange Column ◽  
Ion Exchange Column ◽  
Fresh Stool

Abstract We describe a method for quantitatively estimating 24 ninhydrin-reacting substances, including the commoner amino acids, in fecal dialysate prepared from ingested dialysis bags retrieved from fresh stool. It is accurate to 2 µmol of α-amino nitrogen per liter of fecal dialysate, and for most substances recovery of added standards is 100%. It involves dilution, ultrafiltration, and automated ion-exchange column chromatography of the dialysate. Some normal values are provided.

Fluorometric Determination of Chlortetracycline in Low Level Mixed Feeds

1964 ◽  
Vol 47 (6) ◽  
pp. 1157-1161
Author(s):  
Stanley E Katz ◽  
Joseph Spock
Keyword(s):  
Ion Exchange ◽  
Sodium Carbonate ◽  
Fluorometric Determination ◽  
Aqueous Sodium ◽  
Exchange Column ◽  
Aqueous Sodium Carbonate ◽  
Ion Exchange Column ◽  
Low Levels ◽  
Mixed Feeds

Abstract The fluorometric determination of low levels of chlortetracycline in mixed feeds is based upon the separation of the chlortetracycline on a Decalso ion exchange column after extraction from the feed. The chlortetracycline is eluted from the resin after conversion to isochlortetracycline by hot aqueous sodium carbonate. The isochlortetracycline is measured fluorometrically. Results agree with microbial assays.

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