iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ASTM

ASTM E1184-98

(Practice)

Standard Practice for Electrothermal (Graphite Furnace) Atomic Absorption Analysis

Standard Practice for Electrothermal (Graphite Furnace) Atomic Absorption Analysis

SCOPE
1.1 This practice covers a procedure for the determination of microgram per millilitre ([mu]g/mL) or lower concentrations of elements in solution using an electrothermal atomization device attached to an atomic absorption spectrophotometer. A general description of the equipment is provided. Recommendations are made for preparing the instrument for measurements, establishing optimum temperature conditions and other criteria which should result in determining a useful calibration concentration range, and measuring and calculating the test solution analyte concentration.
1.2 This standard does not purport to address all of the safety problems, 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. Specific safety hazard statements are given in Section 9. Note 1-This practice is a companion to Practice E663.

General Information

Status
Historical
Publication Date
09-May-1998
ICS
71.040.50 - Physicochemical methods of analysis
Technical Committee
E01 - Analytical Chemistry for Metals, Ores, and Related Materials
Drafting Committee
E01.20 - Fundamental Practices
Current Stage
Ref Project

Relations

Replaced By
ASTM E1184-02 - Standard Practice for Electrothermal (Graphite Furnace) Atomic Absorption Analysis
Effective Date
10-Oct-2002

Buy Standard

ASTM E1184-98 - Standard Practice for Electrothermal (Graphite Furnace) Atomic Absorption AnalysisASTM E1184-98 - Standard Practice for Electrothermal (Graphite Furnace) Atomic Absorption Analysis
PreviousNext
Standard
ASTM E1184-98 - Standard Practice for Electrothermal (Graphite Furnace) Atomic Absorption Analysis
English language
5 pages
sale 15% off
Preview
sale 15% off
Preview

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:E1184–98
Standard Practice for
Electrothermal (Graphite Furnace) Atomic Absorption
1
Analysis
This standard is issued under the fixed designation E1184; 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 (ε) indicates an editorial change since the last revision or reapproval.
3
1. Scope E663 Practice for Flame Atomic Absorption Analysis
E863 Practice for Describing Flame Atomic Absorption
1.1 This practice covers a procedure for the determination
3
Spectroscopy Equipment
of microgram per millilitre (µg/mL) or lower concentrations of
elements in solution using an electrothermal atomization de-
3. Terminology
vice attached to an atomic absorption spectrophotometer. A
3.1 RefertoTerminologyE131andE135forthedefinition
general description of the equipment is provided. Recommen-
of terms used in this practice.
dations are made for preparing the instrument for measure-
3.2 Definitions of Terms Specific to This Standard:
ments, establishing optimum temperature conditions and other
3.2.1 atomization—theformationofgroundstateatomsthat
criteria which should result in determining a useful calibration
absorb radiation from a line emission source (see Practice
concentration range, and measuring and calculating the test
E663). The atomization process in electrothermal atomic
solution analyte concentration.
absorption analysis is covered in greater detail in 6.2.
1.2 This standard does not purport to address all of the
3.2.2 pyrolysis—the process of heating a specimen to a
safety problems, if any, associated with its use. It is the
temperature high enough to remove or alter its original matrix,
responsibility of the user of this standard to establish appro-
butnotsohighastovolatilizetheelementtobemeasured.The
priate safety and health practices and determine the applica-
purpose of the pyrolysis step in electrothermal atomic absorp-
bility of regulatory limitations prior to use. Specific safety
tionanalysisistoremoveoraltertheoriginalspecimenmatrix,
hazard statements are given in Section 9.
thereby reducing or eliminating possible interferences to the
NOTE 1—This practice is a companion to Practice E663.
formation of ground state atoms that are formed when the
temperature is increased during the atomization step. Many
2. Referenced Documents
publications and references will refer to pyrolysis as charring
2.1 ASTM Standards:
or ashing.
E50 Practices forApparatus, Reagents, and Safety Precau-
3.2.3 pyrolytic graphite coating—alayerofpyrolyticgraph-
2
tions for Chemical Analysis of Metals
ite that coats a graphite tube used in electrothermal atomic
3
E131 Terminology Relating to Molecular Spectroscopy
absorption analysis. Pyrolytic graphite is formed by pyrolizing
E135 Terminology Relating to Analytical Chemistry for
a hydrocarbon, for example, methane, at 2000°C.
2
Metals, Ores, and Related Materials
3.2.4 ramping—a slow, controlled increase of the tempera-
E406 Practice for Using Controlled Atmospheres in Spec-
ture in the graphite tube. Ramping will provide for an efficient
3
trochemical Analysis
but not too rapid removal or decomposition of the specimen
E416 Practice for Planning and Safe Operation of a Spec-
matrix. Most electrothermal atomizers allow for ramping
3
trochemical Laboratory
duringthedrying,pyrolysis,andatomizationsteps.Itisusually
employed during the drying and pyrolysis steps. However,
1 some instrument manufacturers may recommend ramping
This practice is under the jurisdiction of ASTM Committee E-1 on Analytical
during the atomization step depending on the specimen matrix
Chemistry for Metals, Ores and Related Materials and is the direct responsibility of
Subcommittee E01.20 on Fundamental Practices and Measurement Traceability.
and the element being measured (for example, the analysis of
Current edition approved May 10, 1998. Published July 1998. Originally
cadmiumorleadinhairorblood).Thepowersuppliesformost
ε1.
published as E 1184 — 87. Last previous edition E 1184 — 87 (1992)
2
instruments also allow the rate of the temperature increase to
Annual Book of ASTM Standards, Vol 03.05.
3
Annual Book of ASTM Standards, Vol 03.06. be varied.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E1184
4. Significance and Use 7.2 Electrothermal Atomizers—The most commonly used
electrothermal atomizer is the graphite tube furnace. This
4.1 This practice is intended for spectroscopists who are
atomizer consists of a graphite tube positioned in a water-
attempting to establish electrothermal atomic absorption pro-
cooled unit designed to be placed in the
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ASTM
ASTM E135-23a(Terminology)
Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials

SIGNIFICANCE AND USE
3.1 Definitions given in Section 4 are intended for use in all standards on analytical chemistry for metals, ores, and related materials. The definitions should be used uniformly and consistently. The purpose of these definitions is to promote clear understanding and interpretation of the standards in which the terms are used.
SCOPE
1.1 This is a compilation of terms commonly used in analytical chemistry for metals, ores, and related materials. Terms that are generally understood or defined adequately in other readily available sources are either not included or their sources are identified.  
1.2 A definition is a single sentence with additional information included in a discussion.  
1.3 The date of last reapproval or revision of a term is in parentheses at the end of the definition.  
1.4 Definitions identical to those published by another standards organization or ASTM committee are identified with the name of the organization and the identifying document or ASTM committee and standard.  
1.5 Definitions specific to a particular field (such as emission spectrometry) are identified with an italicized introductory phrase.  
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.

  • Standard
    5 pages
    English language
    sale 15% off
  • Standard
    5 pages
    English language
    sale 15% off
ASTM
ASTM E1806-23(Practice)
Standard Practice for Sampling Steel and Iron for Determination of Chemical Composition

SIGNIFICANCE AND USE
4.1 This practice covers all aspects of sampling and preparing steel and iron for chemical analysis as defined in Test Methods, Practices, and Definitions A751 and Specification A48/A48M. Such subjects as sampling location and the sampling of lots are defined.  
4.2 This practice includes most requirements for sampling steel and iron for analysis. Standard test methods that reference this practice need contain only special modifications and exceptions.  
4.3 All who use these procedures should be trained samplers capable of performing common sampling operations skillfully and safely. Only proper sampling equipment should be used.
SCOPE
1.1 This practice covers the sampling of all grades of steel, both cast and wrought, and all types (grades) of cast irons and blast furnace iron for chemical and spectrochemical determination of composition. This practice is similar to ISO 14284.  
1.2 This practice is divided into the following sections.    
Sections  
Requirements for Sampling and Sample Preparation  
6  
General  
6.1  
Sample  
6.2  
Selection of a Sample  
6.3  
Preparation of a Sample  
6.4  
Liquid Iron for Steelmaking and Pig Iron Production  
7  
General  
7.1  
Spoon Sampling  
7.2  
Probe Sampling  
7.3  
Preparation of a Sample for Analysis  
7.4  
Liquid Iron for Cast Iron Production  
8  
General  
8.1  
Spoon Sampling  
8.2  
Probe Sampling  
8.3  
Preparation of a Sample for Analysis  
8.4  
Sampling and Sample Preparation for the Determination of  
8.5  
Oxygen and Hydrogen  
Liquid Steel for Steel Production  
9  
General  
9.1  
Probe Sampling  
9.2  
Spoon Sampling  
9.3  
Preparation of a Sample for Analysis  
9.4  
Sampling and Sample Preparation for the Determination  
9.5  
of Oxygen  
Sampling and Sample Preparation for the Determination  
9.6  
of Hydrogen  
Pig Irons  
10  
General  
10.1  
Increment Sampling  
10.2  
Preparation of a Sample for Analysis  
10.3  
Cast Iron Products  
11  
General  
11.1  
Sampling and Sample Preparation  
11.2  
Sections  
Steel Products  
12  
General  
12.1  
Selection of a Laboratory Sample or a Sample for  
12.2  
Analysis from a Cast Product  
Selection of a Laboratory Sample or a Sample for  
12.3  
Analysis from a Wrought Product  
Preparation of a Sample for Analysis  
12.4  
Sampling of Leaded Steel  
12.5  
Sampling and Sample Preparation for the Determination  
12.6  
of Oxygen  
Sampling and Sample Preparation for the Determination  
12.7  
of Hydrogen  
Keywords  
13  
Annexes  
Sampling Probes for Use with Liquid Iron and Steel  
Annex A1  
Sampling Probes for Use with Liquid Steel for the  
Annex A2  
Determination of Hydrogen  
1.3 The values stated in SI units are regarded as standard. No other units of measurement are included in this standard.  
1.4 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. For specific statements, see 6.4.3.5, 9.4.4.3, 12.5.1, and Section 5.  
1.5 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.

  • Standard
    22 pages
    English language
    sale 15% off
  • Standard
    22 pages
    English language
    sale 15% off
ASTM
ASTM E1999-23(Test Method)
Standard Test Method for Analysis of Cast Iron by Spark Atomic Emission Spectrometry

SIGNIFICANCE AND USE
5.1 The chemical composition of cast iron alloys shall be determined accurately in order to ensure the desired metallurgical properties. This procedure is suitable for manufacturing control and inspection testing.
SCOPE
1.1 This test method covers the analysis of cast iron by spark atomic emission spectrometry for the following elements in the ranges shown (Note 1):
Ranges, %  
Elements  
Applicable Range, %  
Quantitative Range, %A  
Carbon  
1.9 to 3.8  
1.90 to 3.8  
Chromium  
0 to 2.0  
0.025 to 2.0  
Copper  
0 to 0.75  
0.015 to 0.75  
Manganese  
0 to 1.8  
0.03 to 1.8  
Molybdenum  
0 to 1.2  
0.01 to 1.2  
Nickel  
0 to 2.0  
0.02 to 2.0  
Phosphorus  
0 to 0.4  
0.005 to 0.4  
Silicon  
0 to 2.5  
0.15 to 2.5  
Sulfur  
0 to 0.08  
0.01 to 0.08  
Tin  
0 to 0.14  
0.004 to 0.14  
Titanium  
0 to 0.12  
0.003 to 0.12  
Vanadium  
0 to 0.22  
0.008 to 0.22
Note 1: The ranges of the elements listed have been established through cooperative testing of reference materials. These ranges can be extended by the use of suitable reference materials.  
1.2 This test method covers analysis of specimens having a diameter adequate to overlap the bore of the spark stand opening (to effect an argon seal). The specimen thickness should be sufficient to prevent overheating during excitation. A heat sink backing may be used. The maximum thickness is limited only by the height that the stand will permit.  
1.3 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.  
1.4 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.

  • Standard
    7 pages
    English language
    sale 15% off
  • Standard
    7 pages
    English language
    sale 15% off
ASTM
ASTM E1621-22(Guide)
Standard Guide for Elemental Analysis by Wavelength Dispersive X-Ray Fluorescence Spectrometry

SIGNIFICANCE AND USE
5.1 X-ray fluorescence spectrometry can provide an accurate determination of metallic and many non-metallic elements in a wide variety of solid and liquid materials. This guide covers the information that should be included in an X-ray spectrometric analytical method and provides direction to the user for determining the optimum conditions needed to achieve acceptable accuracy.  
5.2 The accuracy of a determination is a function of the calibration algorithm, the sample preparation, and the sample homogeneity. Close attention to all aspects of these areas is necessary to achieve acceptable results.  
5.3 All concepts discussed in this guide are explored in detail in a number of published texts and in the scientific literature.
SCOPE
1.1 This standard provides guidelines for developing and describing analytical procedures using a wavelength dispersive X-ray spectrometer for elemental analysis of solid metals, ores, and related materials. Material forms discussed herein include solids, powders, and solid forms prepared by chemical and physical processes such as borate fusion and pressing of briquettes.  
1.2 Liquids are not discussed in this guide because they are much less frequently encountered in metals and mining laboratories. However, aqueous liquids can be processed by borate fusion to create solid specimens, and X-ray spectrometers can be equipped to handle liquids directly.  
1.3 Some provisions of this guide may be applicable to the use of an energy dispersive X-ray spectrometer.  
1.4 Units—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.  
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.

  • Guide
    9 pages
    English language
    sale 15% off
  • Guide
    9 pages
    English language
    sale 15% off
ASTM
ASTM E2857-22(Guide)
Standard Guide for Validating Analytical Methods

SIGNIFICANCE AND USE
4.1 Method validation is a process of demonstrating that the method meets the required performance capabilities. International standards such as ISO/IEC 17025, certifying bodies, and regulatory agencies require evidence that analytical methods are capable of producing valid results. This applies to laboratories using published standard test methods, modified standard test methods, and in-house test methods.  
4.2 Although a collaborative study is part of this guide, this guide may be used by a single laboratory for method validation when a formal collaboration study is not practical. This guide may also be applied before a full collaboration study to predict the reliability of the method.  
4.3 The use of multiple validation techniques described in this guide increases confidence in the validity or application of the method.  
4.4 It is beyond the scope of this guide to describe fully the fundamental considerations in Section 5. For a more descriptive definition of these concepts, refer to the International Union of Pure and Applied Chemistry (IUPAC) technical report, “Harmonized Guidelines for Single Laboratory Validation of Methods of Analysis” (1), the IUPAC Compendium of Analytical Nomenclature (Orange Book) (2), and the Eurachem publication, The Fitness for Purpose of Analytical Methods, A Laboratory Guide to Method Validation and Related Topics (3).
SCOPE
1.1 This guide describes procedures for the validation of chemical and spectrochemical analytical test methods that are used by a metals, ores, and related materials analysis laboratory.  
1.2 This guide may be applied to the validation of laboratory developed (in-house) methods, addition of analytes to an existing standard test method, variation or scope expansion of an existing standard method, or the use of new or different laboratory equipment.  
1.3 The suggested approaches in this guide may also be used to validate the implementation of standard test methods used routinely by laboratories of the mining, ore processing, and metals industry.  
1.4 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.  
1.5 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.

  • Guide
    5 pages
    English language
    sale 15% off
  • Guide
    5 pages
    English language
    sale 15% off
ASTM
ASTM E2371-21a(Test Method)
Standard Test Method for Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry (Performance-Based Test Methodology)

SIGNIFICANCE AND USE
5.1 This test method for the chemical analysis of titanium and titanium alloys is primarily intended to test material for compliance with specifications of chemical composition such as those under the jurisdiction of ASTM Committee B10. It may also be used to test compliance with other specifications that are compatible with the test method.  
5.2 It is assumed that all who use this test method will be trained analysts capable of performing common laboratory procedures skillfully and safely and that the work will be performed in a properly equipped laboratory.  
5.3 This is a performance-based test method that relies more on the demonstrated quality of the test result than on strict adherence to specific procedural steps. It is expected that laboratories using this test method will prepare their own work instructions. These work instructions will include detailed operating instructions for the specific laboratory, the specific reference materials used, and performance acceptance criteria. It is also expected that, when applicable, each laboratory will participate in proficiency test programs, such as described in Practice E2027, and that the results from the participating laboratory will be satisfactory.
SCOPE
1.1 This method describes the analysis of titanium and titanium alloys, such as specified by committee B10, by inductively coupled plasma atomic emission spectrometry (ICP-AES) and direct current plasma atomic emission spectrometry (DCP-AES) for the following elements:    
Element  
Application
Range (wt.%)  
Quantitative
Range (wt.%)  
Aluminum  
0–8  
0.009 to 8.0  
Boron  
0–0.04  
0.0008 to 0.01  
Cobalt  
0-1  
0.006 to 0.1  
Chromium  
0–5  
0.005 to 4.0  
Copper  
0–0.6  
0.004 to 0.5  
Iron  
0–3  
0.004 to 3.0  
Manganese  
0–0.04  
0.003 to 0.01  
Molybdenum  
0–8  
0.004 to 6.0  
Nickel  
0–1  
0.001 to 1.0  
Niobium  
0-6  
0.008 to 0.1  
Palladium  
0-0.3  
0.02 to 0.20  
Ruthenium  
0-0.5  
0.004 to 0.10  
Silicon  
0–0.5  
0.02 to 0.4  
Tantalum  
0-1  
0.01 to 0.10  
Tin  
0–4  
0.02 to 3.0  
Tungsten  
0-5  
0.01 to 0.10  
Vanadium  
0–15  
0.01 to 15.0  
Yttrium  
0–0.04  
0.001 to 0.004  
Zirconium  
0–5  
0.003 to 4.0  
1.2 This test method has been interlaboratory tested for the elements and ranges specified in the quantitative range part of the table in 1.1. It may be possible to extend this test method to other elements or broader mass fraction ranges as shown in the application range part of the table above provided that test method validation is performed that includes evaluation of method sensitivity, precision, and bias. Additionally, the validation study shall evaluate the acceptability of sample preparation methodology using reference materials or spike recoveries, or both. Guide E2857 provides information on validation of analytical methods for alloy analysis.  
1.3 Because of the lack of certified reference materials (CRMs) containing bismuth, hafnium, and magnesium, these elements were not included in the scope or the interlaboratory study (ILS). It may be possible to extend the scope of this test method to include these elements provided that method validation includes the evaluation of method sensitivity, precision, and bias during the development of the testing method.  
1.4 Units—The values stated in SI units are to be regarded as the 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. Specific safety hazards statements are given in Section 9.  
1.6 This international standard was developed in accordance with internationally recognized principle...

  • Standard
    14 pages
    English language
    sale 15% off
  • Standard
    14 pages
    English language
    sale 15% off
ASTM
ASTM E508-21(Test Method)
Standard Test Method for Determination of Calcium and Magnesium in Iron Ores by Flame Atomic Absorption Spectrometry

SIGNIFICANCE AND USE
5.1 This test method is intended as a referee method for compliance with compositional specifications for impurity content. It is assumed that all who use this procedure will be trained analysts capable of performing common laboratory practices skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Follow appropriate quality control practices such as those described in Guide E882.
SCOPE
1.1 This test method covers the determination of calcium and magnesium in iron ores, concentrates, and agglomerates in the mass fraction (%) range from 0.05 % to 5 % of calcium and 0.05 % to 3 % of magnesium.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.  
1.4 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.

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM E507-21(Test Method)
Standard Test Method for Determination of Aluminum in Iron Ores by Flame Atomic Absorption Spectrometry

SIGNIFICANCE AND USE
5.1 This test method is intended as a referee method for compliance with compositional specifications for impurity content. It is assumed that all who use this procedure will be trained analysts capable of performing common laboratory practices skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Follow appropriate quality control practices such as those described in Guide E882.
SCOPE
1.1 This test method covers the determination of aluminum in iron ores, concentrates, and agglomerates in the mass fraction (%) range from 0.1 to 5.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.  
1.4 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.

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM E1184-21(Practice)
Standard Practice for Determination of Elements by Graphite Furnace Atomic Absorption Spectrometry

SIGNIFICANCE AND USE
4.1 This practice is intended for users who are attempting to establish GF-AAS procedures. It should be helpful for establishing a complete atomic absorption analysis program.
SCOPE
1.1 This practice covers a procedure for the determination of microgram per milliliter (μg/mL) or lower concentrations of elements in solution using a graphite furnace attached to an atomic absorption spectrometer. A general description of the equipment is provided. Recommendations are made for preparing the instrument for measurements, establishing optimum temperature conditions and other criteria which should result in determining a useful calibration concentration range, and measuring and calculating the test solution analyte concentration.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
1.3 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. Specific safety hazard statements are given in Section 9.  
1.4 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.

  • Standard
    9 pages
    English language
    sale 15% off
  • Standard
    9 pages
    English language
    sale 15% off
ASTM
ASTM E1805-21(Test Method)
Standard Test Method for Determination of Gold in Copper Concentrates by Fire Assay Gravimetry

SIGNIFICANCE AND USE
5.1 In the metallurgical process used in the mining industries, gold is often carried along with copper during the flotation concentration process. Metallurgical accounting, process control, and concentrate evaluation procedures for this type of material depend on an accurate, precise measurement of the gold in the copper concentrate. This test method is intended to be a reference method for metallurgical laboratories and a referee method to settle disputes in commercial transactions. It is also a definitive method intended to test materials for compliance with compositional specifications and to provide data for certification of reference materials. It is essential that each performance of the method be validated by applying it to appropriate reference materials at the same time and in the same manner as it is applied to the unknowns.  
5.2 It is assumed that all who use this test method will be trained analysts capable of performing skillfully and safely. It is expected that the work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E882.
SCOPE
1.1 This test method is for the determination of gold in copper concentrates in the content range from 0.2 μg/g to 17 μg/g.
Note 1: The lower scope limit is set in accordance with Practice E1601.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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. For specific warning statements, see 11.3.1, 11.5.4, and 11.6.5.  
1.4 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.

  • Standard
    5 pages
    English language
    sale 15% off
  • Standard
    5 pages
    English language
    sale 15% off