pH and conductivity of concentrated aqueous sodium sulfide/sodium carbonate solutions undergoing carbonation

1990 ◽  
Vol 68 (2) ◽  
pp. 346-348 ◽  
Author(s):  
Jack C. Norman ◽  
Nancy J. Sell ◽  
John A. Ciriacks
Keyword(s):  
Sodium Carbonate ◽  
Sodium Sulfide ◽  
Aqueous Sodium ◽  
Carbonate Solutions

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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