Absorption of Carbon Dioxide in Aqueous Sodium Carbonate-Bicarbonate Solutions

1933 ◽  
Vol 25 (10) ◽  
pp. 1128-1132 ◽  
Author(s):  
Charles R. Harte ◽  
Edwin M. Baker
Keyword(s):  
Carbon Dioxide ◽  
Sodium Carbonate ◽  
Aqueous Sodium ◽  
Aqueous Sodium Carbonate ◽  
Bicarbonate 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.

Densities and compressibilities of aqueous sodium carbonate and bicarbonate from 0 to 45�C

1983 ◽  
Vol 12 (4) ◽  
pp. 233-254 ◽  
Author(s):  
J. Peter Hershey ◽  
Sara Sotolongo ◽  
Frank J. Millero
Keyword(s):  
Sodium Carbonate ◽  
Aqueous Sodium ◽  
Aqueous Sodium Carbonate

Aza-Michael reaction promoted by aqueous sodium carbonate solution

2013 ◽  
Vol 54 (21) ◽  
pp. 2669-2673 ◽  
Author(s):  
Xiao-Ji Tang ◽  
Zhao-Lei Yan ◽  
Wen-Liang Chen ◽  
Ya-Ru Gao ◽  
Shuai Mao ◽  
...  
Keyword(s):  
Sodium Carbonate ◽  
Sodium Carbonate Solution ◽  
Michael Reaction ◽  
Carbonate Solution ◽  
Aqueous Sodium ◽  
Aqueous Sodium Carbonate

THE EVOLUTION OF CARBON DIOXIDE IN THE A.-C. ELECTROLYSIS OF SODIUM CARBONATE AND BICARBONATE SOLUTIONS, AND THE DISCHARGE POTENTIALS OF CARBONATE AND BICARBONATE IONS

1934 ◽  
Vol 11 (4) ◽  
pp. 539-546
Author(s):  
J. W. Shipley
Keyword(s):  
Carbon Dioxide ◽  
Sodium Bicarbonate ◽  
Sodium Carbonate ◽  
Current Flow ◽  
Platinum Electrodes ◽  
Sodium Salts ◽  
Bicarbonate Ions ◽  
Carbonate Solutions ◽  
Bicarbonate Solutions ◽  
Discharge Potential

The a.-c. electrolysis of sodium carbonate solutions at voltages as high as 110, even when arcing occurs on the electrodes, does not cause the evolution of carbon dioxide. In the a.-c. electrolysis of aqueous bicarbonate solutions with platinum electrodes, hydrogen, oxygen and carbon dioxide are evolved freely until all the bicarbonate has been transformed to carbonate, after which the evolution of carbon dioxide ceases and only hydrogen and oxygen are given off. In a.-c. electrolysis of sodium bicarbonate solutions and solutions of the sodium salts of aliphatic acids, a deposit of finely divided platinum is formed on the electrodes. This deposit inhibits the evolution of carbon dioxide, hydrogen and oxygen, but does not affect the current flow. The decomposition potential of bicarbonate solutions in respect to the evolution of carbon dioxide on smooth platinum and with d.c. was found to be 2.2 volts, and of carbonate solutions, 3.5 volts. The anodic discharge potential of HCO3− is − 1.45 to − 1.50 volts, and of CO3−−, − 1.90 to − 1.95 volts. The evolution of carbon dioxide does not appear to cause any polarizing effect on the anode.

The Properties of β-Glucans from Different Fractions of Hull-Less Barley

2011 ◽  
Vol 365 ◽  
pp. 338-341 ◽  
Author(s):  
Xue Ling Zheng ◽  
Li Min Li ◽  
Qi Wang
Keyword(s):  
Sodium Carbonate ◽  
High Purity ◽  
Barley Cultivar ◽  
Aqueous Sodium ◽  
Aqueous Sodium Carbonate

Crude β-glucans were prepared from hull-less barley roller-milled fractions by aqueous sodium carbonate ( pH10). β-Glucan preparations from hull-less barley roller-milled fractions had high purity (90.88-95.04%). The Mw of β-glucan preparations from roller-milled fractions was ranging from 117,600 to 852,400 g/mol, For the same hull-less barley cultivar, β-glucan from flour had higher Mw than shorts and bran, and β-glucan preparations from bran had the lowest Mw.

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