ChemInform Abstract: THE ACTIVITY AND OSMOTIC COEFFICIENTS OF AQUEOUS SODIUM BICARBONATE SOLUTIONS

1983 ◽  
Vol 14 (2) ◽  
Author(s):  
M. SARBAR ◽  
A. K. COVINGTON ◽  
R. L. NUTTALL ◽  
R. N. GOLDBERG
Keyword(s):  
Sodium Bicarbonate ◽  
Osmotic Coefficients ◽  
Aqueous Sodium ◽  
Aqueous Sodium Bicarbonate ◽  
Bicarbonate Solutions

Comprehensive study of the toothpaste containing fluoride and 67% aqueous sodium bicarbonate solution

2021 ◽  
Vol 26 (2) ◽  
pp. 137-143
Author(s):  
S. N. Gromova ◽  
N. A. Guzhavina ◽  
E. A. Falaleeva ◽  
E. P. Kolevatykh ◽  
А. V. Elikov ◽  
...  
Keyword(s):  
Sodium Bicarbonate ◽  
Oral Care ◽  
Sodium Bicarbonate Solution ◽  
Comprehensive Treatment ◽  
Aqueous Sodium ◽  
Aqueous Sodium Bicarbonate ◽  
Periodontal Inflammation ◽  
Aqueous Sodium Bicarbonate Solution ◽  
Inflammatory Effect

Relevance. A wide variety of oral care products is available nowadays. Sometimes aggressive advertising rather than doctor’s advice determines our patients’ choice. In our research, we provide evidence of the clinical use of toothpaste containing fluoride and sodium bicarbonate.Materials and methods. During four weeks, we followed up a group of students who used the toothpaste containing 1400 ppm fluoride and 67% aqueous sodium bicarbonate solution. The clinical, biochemical and microbiological tests and saliva crystallization score assessed the characteristics stated by the manufacturer.Results. The statistically significant correlation between all studied criteria is evidence of the effectiveness of the toothpaste. In addition to the significant remineralization and antiplaque effect, biochemical and microbiological tests confirmed the anti-inflammatory effect of the toothpaste. An immediate cleaning effect was observed after the first brushing as well as in long-term use.Conclusion. Improvement of oral hygiene indices and reduction of periodontal inflammation confirmed the successful result of the comprehensive treatment of chronic gingivitis.

Analysis of Ochratoxins A and B and Their Esters in Barley, Using Partition and Thin Layer Chromatography. I. Development of the Method

1973 ◽  
Vol 56 (4) ◽  
pp. 817-821 ◽  
Author(s):  
Stanley Nesheim ◽  
Nicole F Hardin ◽  
Octave J Francis ◽  
William S Langham
Keyword(s):  
Sodium Bicarbonate ◽  
Diatomaceous Earth ◽  
Average Recovery ◽  
Aqueous Sodium ◽  
Lower Detection Limit ◽  
Aqueous Sodium Bicarbonate ◽  
Lower Detection ◽  
Tlc Plates ◽  
Layer Chromatography

Abstract A convenient, specific, rapid method, developed for the determination of ochratoxin in barley, involves initial extraction of the sample with water-chloroform (1+9), followed by chromatography of the extract on an aqueous sodium bicarbonate-diatomaceous earth column. The ochratoxin esters are removed from the column with hexane-chloroform. Elution of the column with formic acid-chloroform (1+99) yields ochratoxins A and B. The ochratoxin esters are purified further on an aqueous sodium bicarbonate-methanol-diatomaceous earth column. The extracts are then quantitated on TLC plates by measuring fluorescence intensity. The presence of ochratoxins A and B is confirmed through formation of the corresponding ethyl ester derivatives. In an intralaboratory study, in which samples spiked at 25, 50, and 100 μg/kg levels were analyzed by 4 analysts, the average recovery for ochratoxin A was 81.2% with a lower detection limit of 12 μg/kg.

Sign in / Sign up

Export Citation Format

Share Document