scholarly journals Flame Photometric Determination of Alkali and Alkaline Earth Elements in Waters. I. Sodium and Potassium

1956 ◽  
Vol 29 (6) ◽  
pp. 679-683 ◽  
Author(s):  
Ken Sugawara ◽  
Tadashiro Koyama ◽  
Nobuko Kawasaki
Keyword(s):  
Alkaline Earth ◽  
Photometric Determination ◽  
Alkaline Earth Elements ◽  
Sodium And Potassium

Determination of Sodium and Potassium in Fish and Other Marine Products

1964 ◽  
Vol 47 (4) ◽  
pp. 701-707
Author(s):  
Mary H Thompson
Keyword(s):  
Collaborative Study ◽  
Photometric Determination ◽  
Extraction Methods ◽  
Statistical Analyses ◽  
Relative Standard ◽  
Dry Ashing ◽  
Marine Products ◽  
Standard Deviations ◽  
Sodium And Potassium

Abstract Wet-ash and dry-ash extraction methods for the flame photometric determination of sodium and potassium in fish and other marine products were studied collaboratively. The wet-ash method was more accurate primarily because potassium was lost during the dry-ashing procedure at 550°C. Statistical analyses of precision indicate that wetashing is equal to or superior to dryashing. The Associate Referee, using the wet-ash procedure, obtained 98% recoveries for sodium and 102% for potassium, and relative standard deviations of 1.3—2.2 for sodium, and 1.5—3.6 for potassium. Over-all average recoveries obtained by the collaborators were 112% for sodium and 96% for potassium. Collaborative study will be continued.

Rapid Flame Photometric Determination of Sodium and Potassium in Silicate Rocks

1966 ◽  
Vol 20 (5) ◽  
pp. 302-304 ◽  
Author(s):  
K. Govindaraju
Keyword(s):  
Citric Acid ◽  
Good Accuracy ◽  
Matrix Effects ◽  
Photometric Determination ◽  
Fusion Product ◽  
Spectrographic Determination ◽  
Comparison Of Results ◽  
Sodium And Potassium ◽  
Silicate Rocks

A rapid and accurate flame photometric determination of sodium and potassium in silicate rocks is described. The sample is fused with a suitable fusion agent (H3BO3+Li2CO3) and the ground-fusion product is dissolved completely in dilute citric acid. The analysis of this solution for alkalies does not indicate any matrix effects. Comparison of results with available rock standards shows good accuracy and reproducibility. This method is used to supplement spectrographic determination of major constituents in silicate rocks, using borate fusion techniques and has been used for the analysis of more than 5000 rock samples.

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