A sensitive and rapid method for the determination of trace amounts of selenium in geologic materials
Journal of Research of the U.S. Geological Survey
By: George L. Crenshaw and Hubert William Lakin
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Abstract
A sensitive method for the determination of less than crustal abundance amounts of selenium has been developed that can be useful in the geochemical investigation of selenium. The sample is roasted with a flux of sodium carbonate, chloride, and chlorate and then digested in a mixture of nitric and phosphoric acids. The resulting solution is stabilised; the selenium is reacted with 2,3-diaminonaphthalene to form 4,5-benzopiazselenol, extracted with cyclohexane, and measured fluorometrically. The lower limit of selenium content of a sample that can be determined by this method is 0.04 p/m using a 0.5-g sample.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A sensitive and rapid method for the determination of trace amounts of selenium in geologic materials |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 2 |
| Issue | 4 |
| Year Published | 1974 |
| Language | English |
| Publisher | U. S. Geological Survey |
| Description | 5 p. |
| First page | 483 |
| Last page | 487 |
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