ASTM E1615-16
(Test Method)Standard Test Method for Iron in Trace Quantities Using the FerroZine Method
Standard Test Method for Iron in Trace Quantities Using the FerroZine Method
SIGNIFICANCE AND USE
4.1 This test method is suitable for determining trace concentrations of iron in a wide variety of products, provided that appropriate sample preparation has rendered the iron and sample matrix soluble in water or other suitable solvent. Each sample matrix must be investigated for suitability using this test method.
4.2 This test method assumes that the amount of color developed is proportional to the amount of iron in the test solution. The calibration curve is linear over the specified range.
SCOPE
1.1 This test method covers the determination of iron in the range from 0.01 to 0.2 μg/g using FerroZine2 reagent solution. The range may be extended through the use of a 5- or 10-cm cell or by suitable dilution of the sample solution.
1.2 This test method is intended to be general for the final steps in the determination of iron and does not include procedures for sample preparation.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first-aid procedures, and safety precautions.
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 specific warning statements, see 7.4.
General Information
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Designation: E1615 − 16
Standard Test Method for
1
Iron in Trace Quantities Using the FerroZine Method
This standard is issued under the fixed designation E1615; 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* E180 Practice for Determining the Precision of ASTM
Methods for Analysis and Testing of Industrial and Spe-
1.1 This test method covers the determination of iron in the
4
2 cialty Chemicals (Withdrawn 2009)
range from 0.01 to 0.2 µg/g using FerroZine reagent solution.
E200 Practice for Preparation, Standardization, and Storage
The range may be extended through the use of a 5- or 10-cm
of Standard and Reagent Solutions for ChemicalAnalysis
cell or by suitable dilution of the sample solution.
E275 Practice for Describing and Measuring Performance of
1.2 This test method is intended to be general for the final
Ultraviolet and Visible Spectrophotometers
steps in the determination of iron and does not include
procedures for sample preparation.
3. Summary of Test Method
1.3 The values stated in SI units are to be regarded as
3.1 This test method is based upon a photometric determi-
2 5,6
standard. No other units of measurement are included in this
nation of the FerroZine complex with the iron (II) ion. The
standard.
sample is dissolved in a suitable solvent and the iron is reacted
with FerroZine reagent solution which will convert the dis-
1.4 Review the current Safety Data Sheets (SDS) for de-
solved iron compounds to form a magenta color iron (II)
tailedinformationconcerningtoxicity,first-aidprocedures,and
complex.Theironcontentofthesamplesolutionisdetermined
safety precautions.
by measurement of the magenta color at 560 nm using a
1.5 This standard does not purport to address all of the
suitable photometer.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Significance and Use
priate safety, health, and environmental practices and deter-
4.1 This test method is suitable for determining trace
mine the applicability of regulatory limitations prior to use.
concentrations of iron in a wide variety of products, provided
For specific warning statements, see 7.4.
that appropriate sample preparation has rendered the iron and
1.6 This international standard was developed in accor-
sample matrix soluble in water or other suitable solvent. Each
dance with internationally recognized principles on standard-
sample matrix must be investigated for suitability using this
ization established in the Decision on Principles for the
test method.
Development of International Standards, Guides and Recom-
4.2 This test method assumes that the amount of color
mendations issued by the World Trade Organization Technical
developed is proportional to the amount of iron in the test
Barriers to Trade (TBT) Committee.
solution. The calibration curve is linear over the specified
2. Referenced Documents
range.
3
2.1 ASTM Standards:
5. Interferences
D1193 Specification for Reagent Water
5.1 Any ion that absorbs light at 560 nm will interfere with
E60 Practice for Analysis of Metals, Ores, and Related
the determination. Anionic interferences include oxalate in
Materials by Spectrophotometry
5
concentrations over 500 µg/g, cyanide, and nitrate.
5.2 Of copper, cobalt, calcium, magnesium, lead, silver,
1
This test method is under the jurisdiction of ASTM Committee D16 on
molybdenum, aluminum, nickel, zinc, arsenic, manganese,
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
bility of Subcommittee D16.04 on Instrumental Analysis.
Current edition approved April 1, 2016. Published May 2016. Originally
4
approved in 1994. Last previous edition approved in 2008 as E1615– 08. DOI: The last approved version of this historical standard is referenced on
10.1520/E1615-16. www.astm.org.
2 5
FerroZine is a trademark of Hach Chemical Company. Stookey, L. L., “FerroZine—A New Spectrophotometric Reagent for Iron,”
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Analytical Chemistry, Vol 42, No. 7, June 1970, pp. 779 – 781.
6
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Gibbs, C. R., “Characterization and Application of FerroZine Iron Reagent as
Standards volume information, refer to the standard’s Document Summary page on a Ferrous Iron Indicator,” Analytical Chemistry , Vol 48, No. 8, July 1976, pp.
the ASTM website. 1197–1201.
*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
...
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: E1615 − 08 E1615 − 16
Standard Test Method for
1
Iron in Trace Quantities Using the FerroZine Method
This standard is issued under the fixed designation E1615; 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*
2
1.1 This test method covers the determination of iron in the range from 0.01 to 0.2 μg/g using FerroZine reagent solution. The
range may be extended through the use of a 5- or 10-cm cell or by suitable dilution of the sample solution.
1.2 This test method is intended to be general for the final steps in the determination of iron and does not include procedures
for sample preparation.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 Review the current material safety data sheets (MSDS) Safety Data Sheets (SDS) for detailed information concerning
toxicity, first-aid procedures, and safety precautions.
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 specific warning statements, see 7.4.
2. Referenced Documents
3
2.1 ASTM Standards:
D1193 Specification for Reagent Water
E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry
E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
4
(Withdrawn 2009)
E200 Practice for Preparation, Standardization, and Storage of Standard and Reagent Solutions for Chemical Analysis
E275 Practice for Describing and Measuring Performance of Ultraviolet and Visible Spectrophotometers
3. Summary of Test Method
2 5,6
3.1 This test method is based upon a photometric determination of the FerroZine complex with the iron (II) ion. The sample
is dissolved in a suitable solvent and the iron is reacted with FerroZine reagent solution which will convert the dissolved iron
compounds to form a magenta color iron (II) complex. The iron content of the sample solution is determined by measurement of
the magenta color at 560 nm using a suitable photometer.
4. Significance and Use
4.1 This test method is suitable for determining trace concentrations of iron in a wide variety of products, provided that
appropriate sample preparation has rendered the iron and sample matrix soluble in water or other suitable solvent. Each sample
matrix must be investigated for suitability using this test method.
4.2 This test method assumes that the amount of color developed is proportional to the amount of iron in the test solution. The
calibration curve is linear over the specified range.
1
This test method is under the jurisdiction of ASTM Committee E15 on Industrial and Specialty Chemicalsand is the direct responsibility of Subcommittee E15.01 on
General Standards.
Current edition approved April 1, 2008April 1, 2016. Published May 2008May 2016. Originally approved in 1994. Last previous edition approved in 20052008 as
E1615–05.–08. DOI: 10.1520/E1615-08.10.1520/E1615-16.
2
FerroZine is a trademark of Hach Chemical Company.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
The last approved version of this historical standard is referenced on www.astm.org.
5
Stookey, L. L., “FerroZine—A New Spectrophotometric Reagent for Iron,” Analytical Chemistry, Vol 42, No. 7, June 1970, pp. 779 – 781.
6
Gibbs, C. R., “Characterization and Application of FerroZine Iron Reagent as a Ferrous Iron Indicator,” Analytical Chemistry , Vol 48, No. 8, July 1976, pp. 1197–1201.
*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 ----------------------
E1615 − 16
5. Interferences
5.1 Any ion that absorbs light at 560 nm will interfere with the determination. Anionic interferences include oxalate in
5
concentrations over 500 μg/g, cyanide, and nitrate.
5.2 Of coppe
...
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