ASTM D7359-23

Standard Test Method for Total Fluorine, Chlorine and Sulfur in Aromatic Hydrocarbons and Their Mixtures by Oxidative Pyrohydrolytic Combustion followed by Ion Chromatography Detection (Combustion Ion Chromatography-CIC)

SIGNIFICANCE AND USE
5.1 The total fluorine, chlorine, and sulfur contained in aromatic hydrocarbon matrices can contribute to emissions, be harmful to many catalytic chemical processes, and lead to corrosion. This test method can be used to determine total sulfur and halogens in aromatic hydrocarbons and their mixtures. The results can be used for compliance determinations when acceptable to a regulatory authority using performance based criteria.
SCOPE
1.1 This test method covers the individual determination of total fluorine, chlorine, and sulfur in aromatic hydrocarbons and their mixtures. Samples containing 0.10 mg/kg to 10 mg/kg of each element can be analyzed.  
1.2 This method can be applied to sample concentrations outside the range of the scope by dilution of the sample in an appropriate solvent to bring the total concentrations of fluorine, chlorine, and sulfur within the range covered by the test method. However, it is the responsibility of the analyst to verify the solubility of the sample in the solvent and that the diluted sample results conform to the precision and accuracy of the method.  
1.2.1 Special considerations must be made in order to attain detection limits below 1.0 mg/kg in a sample. The instrument must be clean and properly maintained to address potential sources of contamination, or carryover, or both. Multiple sequential injections shall be completed until a stable background is attained. A stable background is considered to be achieved when the analysis of a minimum of three consecutive system blanks have area counts equal to or less than 5 % RSD for the anions of interest.  
1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See Section 9.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Mar-2023
• ICS: 71.080.20 - Halogenated hydrocarbons
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.04 - Instrumental Analysis

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7359 − 23
Standard Test Method for
Total Fluorine, Chlorine and Sulfur in Aromatic
Hydrocarbons and Their Mixtures by Oxidative
Pyrohydrolytic Combustion followed by Ion
Chromatography Detection (Combustion Ion
1
Chromatography-CIC)
This standard is issued under the fixed designation D7359; 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.
1. Scope* 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers the individual determination of
responsibility of the user of this standard to establish appro-
total fluorine, chlorine, and sulfur in aromatic hydrocarbons
priate safety, health, and environmental practices and deter-
and their mixtures. Samples containing 0.10 mg ⁄kg to
mine the applicability of regulatory limitations prior to use.
10 mg ⁄kg of each element can be analyzed.
See Section 9.
1.2 This method can be applied to sample concentrations
1.6 This international standard was developed in accor-
outside the range of the scope by dilution of the sample in an
dance with internationally recognized principles on standard-
appropriate solvent to bring the total concentrations of fluorine,
ization established in the Decision on Principles for the
chlorine, and sulfur within the range covered by the test
Development of International Standards, Guides and Recom-
method. However, it is the responsibility of the analyst to
mendations issued by the World Trade Organization Technical
verify the solubility of the sample in the solvent and that the
Barriers to Trade (TBT) Committee.
diluted sample results conform to the precision and accuracy of
the method.
2. Referenced Documents
1.2.1 Special considerations must be made in order to attain
2
2.1 ASTM Standards:
detection limits below 1.0 mg ⁄kg in a sample. The instrument
D1193 Specification for Reagent Water
must be clean and properly maintained to address potential
D3437 Practice for Sampling and Handling Liquid Cyclic
sources of contamination, or carryover, or both. Multiple
Products
sequential injections shall be completed until a stable back-
D3505 Test Method for Density or Relative Density of Pure
ground is attained. A stable background is considered to be
Liquid Chemicals
achieved when the analysis of a minimum of three consecutive
D6809 Guide for Quality Control and Quality Assurance
system blanks have area counts equal to or less than 5 % RSD
Procedures for Aromatic Hydrocarbons and Related Ma-
for the anions of interest.
terials
1.3 In determining the conformance of the test results using
E29 Practice for Using Significant Digits in Test Data to
this method to applicable specifications, results shall be
Determine Conformance with Specifications
rounded off in accordance with the rounding-off method of
E177 Practice for Use of the Terms Precision and Bias in
Practice E29.
ASTM Test Methods
E288 Specification for Laboratory Glass Volumetric Flasks
1.4 The values stated in SI units are to be regarded as
E691 Practice for Conducting an Interlaboratory Study to
standard. No other units of measurement are included in this
Determine the Precision of a Test Method
standard.
E969 Specification for Glass Volumetric (Transfer) Pipets
1
This test method is under the jurisdiction of ASTM Committee D16 on
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
2
bility of Subcommittee D16.04 on Instrumental Analysis. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2023. Published April 2023. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 2008. Last previous edition approved in 2018 as D7359 – 18. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D7359-23. 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 ----------------------
D7359 − 23
2.2 Other Documents: 3.1.10 calibration standard, n—standard prepared from the
OSHA Regulations, 29 CFR paragraphs 1910.1000 and working standard and subsequently used to calibrate the
3
1910.1200 instrument.
3.2 Abbreviations:
3. Terminology
3.2.1 CIC—combustion ion chromatography
3.1 Definitions:
3.2.2 Conc—concentration
...

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: D7359 − 18 D7359 − 23
Standard Test Method for
Total Fluorine, Chlorine and Sulfur in Aromatic
Hydrocarbons and Their Mixtures by Oxidative
Pyrohydrolytic Combustion followed by Ion
Chromatography Detection (Combustion Ion
1
Chromatography-CIC)
This standard is issued under the fixed designation D7359; 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.
1. Scope*
1.1 This test method covers the individual determination of total fluorine, chlorine, and sulfur in aromatic hydrocarbons and their
mixtures. Samples containing 0.100.10 mg ⁄kg to 1010 mg mg/kg ⁄kg of each element can be analyzed.
1.2 This method can be applied to sample concentrations outside the range of the scope by dilution of the sample in an appropriate
solvent to bring the total concentrations of fluorine, chlorine, and sulfur within the range covered by the test method. However,
it is the responsibility of the analyst to verify the solubility of the sample in the solvent and that the diluted sample results conform
to the precision and accuracy of the method.
1.2.1 Special considerations must be made in order to attain detection limits below 1.01.0 mg mg/kg ⁄kg in a sample. The
instrument must be clean and properly maintained to address potential sources of contamination, of contamination, or carryover,
or both. Multiple sequential injections shall be completed until a stable background is attained. A stable background is considered
to be achieved when the analysis of a minimum of three consecutive system blanks have area counts equal to or less than 5 % RSD
for the anions of interest.
1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off
in accordance with the rounding-off method of Practice E29.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use. See Section 9.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsibility of
Subcommittee D16.04 on Instrumental Analysis.
Current edition approved Nov. 1, 2018April 1, 2023. Published December 2018April 2023. Originally approved in 2008. Last previous edition approved in 20142018 as
D7359 – 14a. DOI: 10.1520/D7359-18.18. DOI: 10.1520/D7359-23.
*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 ----------------------
D7359 − 23
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D3505 Test Method for Density or Relative Density of Pure Liquid Chemicals
D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E288 Specification for Laboratory Glass Volumetric Flasks
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E969 Specification for Glass Volumetric (Transfer) Pipets
2.2 Other Documents:
3
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 Definitions:
3.1.1 combustion ion chromatography, n—an analytical system consisting of pyrohydrolytic combustion followed by ion
chromatographic detection.
3.1.2 oxidative pyrohydrolytic combustion, n—a process in which a sample undergoes combustion at temp
...