ASTM D1179-16

Standard Test Methods for Fluoride Ion in Water

SIGNIFICANCE AND USE
4.1 Simple and complex fluoride ions are found in natural waters. Fluoride forms complexing ions with silicon, aluminum, and boron. These complexes may originate from the use of fluorine compounds by industry.  
4.2 Fluoridation of drinking water to prevent dental caries is practiced by a large number of communities in this country. Fluoride is monitored to assure that an optimum treatment level, usually near 1 mg/L, is maintained.
SCOPE
1.1 These test methods2 cover the determination of fluoride ion in water. The following two test methods are given:    
Sections  
Test Method A—Distillation  
7 to 13  
Test Method B—Ion Selective Electrode  
14 to 21  
1.2 Test Method A covers the accurate measurement of total fluoride in water through isolation of the fluoride by distillation and subsequent measurement in the distillate by use of the ion selective electrode (ISE) method. The procedure covers the range from 0.1 to 2.6 mg/L of fluoride.  
1.3 Test Method B covers the accurate measurement of simple fluoride ion in water by means of an ion selective electrode. With this test method, distillation is eliminated because the electrode is not affected by the interferences common to colorimetric procedures. Concentrations of fluoride from 0.1 to 1000 mg/L may be measured.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific precautionary statement, see 12.1.2.  
1.6 Former Test Method A, SPADNS Photometric Procedure, was discontinued. Refer to Appendix X1 for historical information.

General Information

• Status: Historical
• Publication Date: 14-Jun-2016
• ICS: 13.060.50 - Examination of water for chemical substances
• Technical Committee: D19 - Water
• Drafting Committee: D19.05 - Inorganic Constituents in Water

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D1179 − 16
Standard Test Methods for
1
Fluoride Ion in Water
This standard is issued under the fixed designation D1179; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2. Referenced Documents
2 3
1.1 These test methods cover the determination of fluoride 2.1 ASTM Standards:
ion in water. The following two test methods are given: D1066 Practice for Sampling Steam
D1129 Terminology Relating to Water
Sections
Test Method A—Distillation 7 to 13
D1193 Specification for Reagent Water
Test Method B—Ion Selective Electrode 14 to 21
D2777 Practice for Determination of Precision and Bias of
1.2 Test MethodAcovers the accurate measurement of total
Applicable Test Methods of Committee D19 on Water
fluorideinwaterthroughisolationofthefluoridebydistillation
D3370 Practices for Sampling Water from Closed Conduits
and subsequent measurement in the distillate by use of the ion
D4127 Terminology Used with Ion-Selective Electrodes
selective electrode (ISE) method. The procedure covers the
D5810 Guide for Spiking into Aqueous Samples
range from 0.1 to 2.6 mg/L of fluoride.
D5847 Practice for Writing Quality Control Specifications
for Standard Test Methods for Water Analysis
1.3 Test Method B covers the accurate measurement of
simple fluoride ion in water by means of an ion selective
3. Terminology
electrode. With this test method, distillation is eliminated
3.1 Definitions:
because the electrode is not affected by the interferences
3.1.1 For definitions of terms used in this standard, refer to
commontocolorimetricprocedures.Concentrationsoffluoride
Terminologies D1129 and D4127.
from 0.1 to 1000 mg/L may be measured.
1.4 The values stated in SI units are to be regarded as
4. Significance and Use
standard. No other units of measurement are included in this
4.1 Simple and complex fluoride ions are found in natural
standard.
waters. Fluoride forms complexing ions with silicon,
1.5 This standard does not purport to address all of the
aluminum,andboron.Thesecomplexesmayoriginatefromthe
safety concerns, if any, associated with its use. It is the
use of fluorine compounds by industry.
responsibility of the user of this standard to establish appro-
4.2 Fluoridationofdrinkingwatertopreventdentalcariesis
priate safety and health practices and determine the applica-
practiced by a large number of communities in this country.
bility of regulatory limitations prior to use. For a specific
Fluoride is monitored to assure that an optimum treatment
precautionary statement, see 12.1.2.
level, usually near 1 mg/L, is maintained.
1.6 Former Test Method A, SPADNS Photometric
Procedure, was discontinued. Refer to Appendix X1 for
5. Purity of Reagents
historical information.
5.1 Reagent grade chemicals shall be used in all tests.
Unless otherwise indicated, it is intended that all reagents shall
1
These test methods are under the jurisdiction of ASTM Committee D19 on
conform to the specifications of the Committee on Analytical
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
Constituents in Water.
Current edition approved June 15, 2016. Published June 2016. Originally
3
approved in 1951. Last previous edition approved in 2010 as D1179 – 10. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/D1179-16. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2
Bellack,E.,“SimplifiedFluorideDistillationMethod,”JournaloftheAmerican Standards volume information, refer to the standard’s Document Summary page on
Water Works Association, Vol 50, 1958, p. 530. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1179 − 16
TABLE 1 Allowable Interference Levels with Selective Ion
A
Electrode and Buffer
Maximum Allowable Concentration at
Interfering Ion
−
1.0 mg/L F
+3
Al 0.5
+4
Si 50
+3
Fe 65
A
Refer to 16.2 for description of interfering cations.
Reagents of the American Chemical Society, where such
4
specifications are available. Other grades may be used, pro-
vided it is first ascertained that the reagent is of sufficiently
high purity to permit its use without lessening the accuracy of
the determination.
5.2 Purity of Water—Unless otherwise indicated, references
to water shall be understood to mean Type I reagent water
conforming to Specification D1193. Other reagent water typ
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D1179 − 10 D1179 − 16
Standard Test Methods for
1
Fluoride Ion in Water
This standard is issued under the fixed designation D1179; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
2
1.1 These test methods cover the determination of fluoride ion in water. The following two test methods are given:
Sections
Test Method A—Distillation 7 to 13
Test Method A—Distillation 7 to 13
Test Method B—Ion Selective Electrode 14 to 21
Test Method B—Ion Selective Electrode 14 to 21
1.2 Test Method A covers the accurate measurement of total fluoride in water through isolation of the fluoride by distillation
and subsequent measurement in the distillate by use of the ion selective electrode (ISE) method. The procedure covers the range
from 0.1 to 2.6 mg/L of fluoride.
1.3 Test Method B covers the accurate measurement of simple fluoride ion in water by means of an ion selective electrode. With
this test method, distillation is eliminated because the electrode is not affected by the interferences common to colorimetric
procedures. Concentrations of fluoride from 0.1 to 1000 mg/L may be measured.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use. For a specific precautionary statement, see 12.1.2.
1.6 Former Test Method A, SPADNS Photometric Procedure, was discontinued. Refer to Appendix X1 for historical
information.
2. Referenced Documents
3
2.1 ASTM Standards:
D1066 Practice for Sampling Steam
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
D3370 Practices for Sampling Water from Closed Conduits
D4127 Terminology Used with Ion-Selective Electrodes
D5810 Guide for Spiking into Aqueous Samples
D5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
3. Terminology
3.1 Definitions—Definitions:
3.1.1 For definitions of terms used in this standard, refer to Terminologies D1129 and D4127. For definitions of terms used in
these test methods, refer to Terminology D1129 and D4127.
1
These test methods are under the jurisdiction of ASTM Committee D19 on Water and are the direct responsibility of Subcommittee D19.05 on Inorganic Constituents
in Water.
Current edition approved June 15, 2010June 15, 2016. Published July 2010June 2016. Originally approved in 1951. Last previous edition approved in 20042010 as
D1179 – 04.D1179 – 10. DOI: 10.1520/D1179-10.10.1520/D1179-16.
2
Bellack, E., “Simplified Fluoride Distillation Method,’’ Journal of the American Water Works Association, Vol 50, 1958, p. 530.Bellack, E., “Simplified Fluoride
Distillation Method,” Journal of the American Water Works Association, Vol 50, 1958, p. 530.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1179 − 16
TABLE 1 Allowable Interference Levels with Selective Ion
A
Electrode and Buffer
Maximum Allowable Concentration at
Interfering Ion
−
1.0 mg/L F
+3
Al 0.5
+4
Si 50
+3
Fe 65
A
Refer to 16.2 for description of interfering cations.
4. Significance and Use
4.1 Simple and complex fluoride ions are found in natural waters. Fluoride forms complexing ions with silicon, aluminum, and
boron. These complexes may originate from the use of fluorine compounds by industry.
4.2 Fluoridation of drinking water to prevent dental caries is practiced by a large number of communities in this country.
Fluoride is monitored to assure that an optimum treat
...