| Abstract: | Strontium, lanthanum, neodymium, samarium, and yttrium completely release the flame emission of calcium from the depressive effects of sulfate, phosphate, and aluminate. Magnesium, beryllium, barium, and scandium release most of the calcium emission. These cations, when present in high concentration, preferentially form compounds with the depressing anions when the solution is evaporated rapidly in the flame. The mechanism of the interference and releasing effects is explained on the basis of the chemical equilibria in the evaporating droplets of solution and is shown to depend upon the nature of the compounds present in the aqueous phase of the solution. The need for background correction techniques is stressed. The releasing effect is used in the determination of calcium in silicate rocks without the need for separations. |
| Genre: | Article |
| ProdID: | 70010540 |
| Citation Author: | Dinnin, J. I. |
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| Citation End Page: | 1480 |
| Citation Issue: | 11 |
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| Citation Language: | English |
| Citation Larger Work Title: | Analytical Chemistry |
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| Citation Number Of Pages: | 6 |
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| Citation Search Results Text: | Releasing effects in flame photometry: Determination of calcium; 1960; Article; Journal; Analytical Chemistry; Dinnin, J. I. |
| Citation Start Page: | 1475 |
| Citation Volume: | 32 |
| Citation Year: | 1960 |
| Type: | citation/reference |
| Text: | Releasing effects in flame photometry: Determination of calcium; 1960; Article; Journal; Analytical Chemistry; Dinnin, J. I. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1960 00:00 -0600 |
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