Standard Test Methods for Analysis for Fluoride Content of the Atmosphere and Plant Tissues (Semiautomated Method)

SIGNIFICANCE AND USE
These test methods may be used for determining the fluoride content of particulate matter and gases collected from the atmosphere by passive and active means, including plant tissues. The user is warned that the fluoride content of passive collectors (including plants) give only qualitative or semiquantitative measurement of atmospheric fluoride content.
SCOPE
1.1 These test methods describe the semiautomated procedure for the analyses of various types of samples for the purpose of determining total fluoride. Since the test methods incorporate microdistillation of the sample, they may be applied to any fluoride-containing solution where standards of identical composition have been carried through the same sample preparation procedures and have proven to provide quantitative recovery when analyzed by the semiautomated system. Conversely, the methods shall not be applied for analyses until the applicability has been demonstrated.
1.2 In normal use, the procedure can detect 0.1 g/mL of F. The normal range of analysis is from 0.1 to 1.6 g/mL of F. Higher concentrations can be analyzed by careful dilution of samples with reagent water. If digested samples routinely exceed 1.6 g/mL of F, the analytical portion of the pump manifold can be modified to reduce sensitivity. However, the best procedure is to analyze a smaller aliquot of the sample. Most accurate results are obtained when the fluoride concentration falls in the middle or upper part of the calibration curve.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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. See 8.3, 10.2.4, and 10.2.5 for additional precautions.

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Publication Date
31-Mar-2006
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ASTM D3270-00(2006) - Standard Test Methods for Analysis for Fluoride Content of the Atmosphere and Plant Tissues (Semiautomated Method)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D3270 − 00(Reapproved 2006)
Standard Test Methods for
Analysis for Fluoride Content of the Atmosphere and Plant
1
Tissues (Semiautomated Method)
This standard is issued under the fixed designation D3270; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D1356Terminology Relating to Sampling and Analysis of
Atmospheres
1.1 These test methods describe the semiautomated proce-
D3266Test Method for Automated Separation and Collec-
dure for the analyses of various types of samples for the
tion of Particulate and Acidic Gaseous Fluoride in the
purpose of determining total fluoride. Since the test methods
Atmosphere (Double Paper Tape Sampler Method)
incorporate microdistillation of the sample, they may be
D3267Test Method for Separation and Collection of Par-
applied to any fluoride-containing solution where standards of
ticulate and Water-Soluble Gaseous Fluorides in the At-
identical composition have been carried through the same
mosphere (Filter and Impinger Method)
sample preparation procedures and have proven to provide
D3268Test Method for Separation and Collection of Par-
quantitative recovery when analyzed by the semiautomated
ticulate and Gaseous Fluorides in the Atmosphere (So-
system. Conversely, the methods shall not be applied for
dium Bicarbonate-Coated Glass Tube and Particulate
analyses until the applicability has been demonstrated.
Filter Method)
1.2 In normal use, the procedure can detect 0.1 µg/mLof F.
D3269Test Methods for Analysis for Fluoride Content of
The normal range of analysis is from 0.1 to 1.6 µg/mL of F.
the Atmosphere and Plant Tissues (Manual Procedures)
Higher concentrations can be analyzed by careful dilution of 3
(Withdrawn 2010)
samples with reagent water. If digested samples routinely
D3614Guide for Laboratories Engaged in Sampling and
exceed 1.6 µg/mL of F, the analytical portion of the pump
Analysis of Atmospheres and Emissions
manifold can be modified to reduce sensitivity. However, the
best procedure is to analyze a smaller aliquot of the sample.
3. Terminology
Most accurate results are obtained when the fluoride concen-
3.1 Definitions—For definitions of terms used in these
trationfallsinthemiddleorupperpartofthecalibrationcurve.
methods, see Terminology D1356.
1.3 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
4. Summary of Test Methods
only.
4.1 These semiautomated methods are based on the distil-
1.4 This standard does not purport to address all of the
lation of hydrogen fluoride (HF) from the sample and subse-
safety concerns, if any, associated with its use. It is the
quent reaction of the distillate with alizarin fluorine blue-
responsibility of the user of this standard to establish appro-
lanthanum nitrate reagent, to form a blue complex which is
priate safety and health practices and determine the applica-
4
measured colorimetrically at 624 nm (1) , or the subsequent
bility of regulatory limitations prior to use.See8.3,10.2.4,and
measurement with a specific ion probe.
10.2.5 for additional precautions.
4.2 General, Plant Material:
2. Referenced Documents
4.2.1 The plant material including leaf samples, washed or
2
2.1 ASTM Standards:
unwashed, is dried, and ground, then dissolved with perchloric
D1193Specification for Reagent Water
acid and diluted to 50 mL with water. In the case of leaf
samples, an appreciable amount of fluoride may be deposited
1
These test methods are under the jurisdiction ofASTM Committee D22 on Air
on the external leaf surfaces. This fluoride behaves differently
Quality and are the direct responsibility of Subcommittee D22.03 on Ambient
physiologically from fluoride absorbed into the leaf and it is
Atmospheres and Source Emissions.
Current edition approved April 1, 2006. Published May 2006. Originally
approved in 1991. Last previous edition approved in 2000 as D3270-00. DOI:
10.1520/D3270-00R06.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or The last approved version of this historical standard is referenced on
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.astm.org.
4
Standards volume information, refer to the standard’s Document Summary page on The boldface numbers in parentheses refer to the references at the end of this
the ASTM website. method.
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