Analytical Suite Metadata

Cantech (lake and stream sediment) ISE (F)



Cantech, lake and stream  sediment; ion-selective electrode (fluorine)

General Methodology:

Fluorine was determined as described by Ficklin (1970).  A 250 mg sample is sintered with 1 g of a flux consisting of two parts by weight sodium carbonate and one part by weight potassium nitrate.  The residue is then leached with water.  The sodium carbonate is neutralized with 10 ml 10% (w/v) citric acid and the resulting solution is diluted to 100 ml with water.  The pH of the resulting solution should be from 5.5 to 6.5.  The fluoride content of the test solution is then measured using a fluoride ion electrode.  Standard solutions contain sodium carbonate and citric acid in the same quantities as the sample solution.

Reference:

Ficklin, W. H. (1970).  A rapid method for the determination of fluoride in rocks and soils, using an ion selective electrode.  U.S. Geol Surv Paper 700C p C186-C188.

Instrument: unstated

Sample material: solid

Sample weight: unstated


Analytical Technique:

Hierarchical classification

Technique >> Electrochemical techniques >> Potentiometry >> Ion-specific electrodes

Children

Glass electrode


Analytical Decomposition:

Hierarchical classification

Decomposition >> Fusion >> Alkaline >> Carbonate >> Na2CO3

Children

None


Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  2170     F_ISE  40

Associated Analytical Packages:

IndexPackage IDPackage Name
1  316     Cantech (NGR stream sediment) AAS(8+Cd,Mo,V,Sn), CV(Hg), LOI, F, Bi, Se
2  451     Cantech (NGR lake sediment) AAS(8+3), CV(Hg - d.l. 5ppb), LOI, F [UNUSED]
3  452     Cantech (NGR lake sediment) AAS(8+3), CV(Hg), LOI, F [UNUSED]
4  453     Cantech (NGR stream sediment) AAS(8+Cd,Mo,V,Sn), CV(Hg), LOI, F
5  456     Cantech (NGR stream sediment) AAS(8+4), CV(Hg), LOI, F
6  460     Cantech (NGR lake sediment) AAS(8+Cd,Mo,V), CV(Hg - d.l. 5ppb), LOI, F [UNUSED]
7  461     Cantech (NGR stream sediment) AAS(8+4), CV(Hg – d.l. 5ppb), LOI, F [UNUSED]
8  475     Cantech (NGR stream sediment)  AAS(8+4), CV(Hg), LOI, F, FA/ICP-MS (Pt, Pd) F
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