Determination of niobium in the parts per million range in rocks
Analytical Chemistry
By: F. S. Grimaldi
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Abstract
A modified niobium thiocyanate spectrophotometric procedure relatively insensitive to titanium interference is presented. Elements such as tungsten, molybdenum, vanadium, and rhenium, which seriously interfere in the spectrophotometric determination of niobium, are separated by simple sodium hydroxide fusion and leach; iron and magnesium are used as carriers for the niobium. Tolerance limits are given for 28 elements in the spectrophotometric method. Specific application is made to the determination of niobium in the parts per million range in rocks. The granite G-1 contains 0.0022% niobium and the diabase W-1 0.00096% niobium.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Determination of niobium in the parts per million range in rocks |
| Series title | Analytical Chemistry |
| DOI | 10.1021/ac60157a035 |
| Volume | 32 |
| Issue | 1 |
| Year Published | 1960 |
| Language | English |
| Publisher | ACS Publications |
| Description | 3 p. |
| First page | 119 |
| Last page | 121 |
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