An improved ion-selective electrode method for the rapid determination of fluorine in rocks and soil

Journal of Research of the U.S. Geological Survey
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Abstract

An improved method based on an ion-selective electrode technique for the analysis of fluorine in rocks and soils is presented. Analyses are made by using a sodium carbonate-potassium carbonate fusion and a citric acid dissolution of the fuseate. Prior to determining the fluorine concentration by a standard-addition procedure, sodium citrate buffer is added to the solution. The proposed method yields fluorine values in agreement with known values for standard rocks. Values of this method are also presented for six geochemical exploration rock-and-soil reference samples and compared to those from other ion-selective electrode techniques. Fifty samples can be analyzed in 1 person-day. The sensitivity of the method is 100 parts per million, and samples containing up to 45 percent fluorine have been successfully analyzed.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title An improved ion-selective electrode method for the rapid determination of fluorine in rocks and soil
Series title Journal of Research of the U.S. Geological Survey
Volume 5
Issue 5
Year Published 1977
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Description 4 p.
First page 589
Last page 593
Online Only (Y/N) N
Additional Online Files (Y/N) N
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