ASTM E1770-14
(Practice)Standard Practice for Optimization of Electrothermal Atomic Absorption Spectrometric Equipment
Standard Practice for Optimization of Electrothermal Atomic Absorption Spectrometric Equipment
SIGNIFICANCE AND USE
4.1 This practice is for optimizing the parameters used in the determination of trace elements in metals and alloys by the electrothermal atomic absorption spectrometric method. It also describes the practice for checking the spectrometer performance. The work is expected to be performed in a properly equipped laboratory by trained operators and appropriate disposal procedures are to be followed.
SCOPE
1.1 This practice covers the optimization of electrothermal atomic absorption spectrometers and the checking of spectrometer performance criteria.
1.2 The values stated in SI units are to be regarded as the 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: E1770 − 14
Standard Practice for
Optimization of Electrothermal Atomic Absorption
1
Spectrometric Equipment
This standard is issued under the fixed designation E1770; 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 4. Significance and Use
1.1 This practice covers the optimization of electrothermal
4.1 This practice is for optimizing the parameters used in
atomicabsorptionspectrometersandthecheckingofspectrom-
the determination of trace elements in metals and alloys by the
eter performance criteria.
electrothermal atomic absorption spectrometric method. It also
describes the practice for checking the spectrometer perfor-
1.2 The values stated in SI units are to be regarded as the
mance. The work is expected to be performed in a properly
standard.
equipped laboratory by trained operators and appropriate
1.3 This standard does not purport to address all of the
disposal procedures are to be followed.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5.1 Atomic Absorption Spectrometer with Electrothermal
Atomizer, equipped with an appropriate background corrector,
2. Referenced Documents
a signal output device such as a video display screen (VDS), a
2
digital computer, a printer, and an autosampler.
2.1 ASTM Standards:
E50 Practices for Apparatus, Reagents, and Safety Consid-
5.2 Pyrolytic Graphite-Coated Graphite Tubes, conforming
erations for Chemical Analysis of Metals, Ores, and
to the instrument manufacturer’s specifications.
Related Materials
5.3 Pyrolytic Graphite Platforms, L’vov design, fitted to the
E135 Terminology Relating to Analytical Chemistry for
tubes specified in 5.2.
Metals, Ores, and Related Materials
E876 Practice for Use of Statistics in the Evaluation of
5.4 Pyrolytic Graphite-Coated Graphite Tubes,
3
Spectrometric Data (Withdrawn 2003)
platformless, conforming to the instrument manufacturer’s
E1184 Practice for Determination of Elements by Graphite
specifications.
Furnace Atomic Absorption Spectrometry
5.5 Radiation Source for the Analyte—A hollow cathode
E1452 Practice for Preparation of Calibration Solutions for
lamp or electrodeless discharge lamp is suitable.
Spectrophotometric and for Spectroscopic Atomic Analy-
3
sis (Withdrawn 2005)
NOTE 1—The use of multi-element lamps is not generally
recommended, since they may be subject to spectral line overlaps.
3. Terminology
5.6 For general discussion of the theory and instrumental
3.1 For definitions of terms used in this test method, refer to
requirements of electrothermal atomic absorption spectromet-
Terminology E135.
ric analysis, see Practice E1184.
6. Reagents
1
This practice is under the jurisdiction of ASTM Committee E01 on Analytical
Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
6.1 Purity and Concentration of Reagents—The purity and
Subcommittee E01.20 on Fundamental Practices.
concentration of common chemical reagents shall conform to
Current edition approved Dec. 1, 2014. Published February 2015. Originally
approved in 1995. Last previous edition approved in 2006 as E1770 – 95 (2006). Practices E50. The reagents should be free of or contain
DOI: 10.1520/E1770-14.
minimal amounts (<0.01 µg/g) of the analyte of interest.
2
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
6.2 Magnesium Nitrate Solution [2 g/L Mg(NO ) ]—
3 2
Standards volume information, refer to the standard’s Document Summary page on
Dissolve 0.36 6 0.01 g high-purity Mg(NO ) ·6H O in about
3 2 2
the ASTM website.
3
50 mL of water, in a 100-mL beaker, and transfer the solution
The last approved version of this historical standard is referenced on
www.astm.org. into a 100-mL volumetric flask. Dilute to mark with water and
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E1770 − 14
mix. Store in polypropylene or high-density polyethylene 9.3.1.1 Ensure that the poles of the magnet are clean and
bottle. Alternatively, this solution may be purchased from a securely tightened.
commercial supplier. 9.3.1.2 If necessary, set the optical temperature sensor in
accordance with the instrument manufacturer’s instructions.
6.3 Calibration Solutions—Refer to the preparation of cali-
9.3.2 Continuum Ba
...
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: E1770 − 95 (Reapproved 2006) E1770 − 14
Standard Practice for
Optimization of Electrothermal Atomic Absorption
1
Spectrometric Equipment
This standard is issued under the fixed designation E1770; 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 practice covers the optimization of electrothermal atomic absorption spectrometers and the checking of spectrometer
performance criteria.
1.2 The values stated in SI units are to be regarded as the 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
3
E876 Practice for Use of Statistics in the Evaluation of Spectrometric Data (Withdrawn 2003)
E1184 Practice for Determination of Elements by Graphite Furnace Atomic Absorption Spectrometry
E1452 Practice for Preparation of Calibration Solutions for Spectrophotometric and for Spectroscopic Atomic Analysis
3
(Withdrawn 2005)
3. Terminology
3.1 For definitions of terms used in this test method, refer to Terminology E135.
4. Significance and Use
4.1 This practice is for optimizing the parameters used in the determination of trace elements in metals and alloys by the
electrothermal atomic absorption spectrometric method. It also describes the practice for checking the spectrometer performance.
The work is expected to be performed in a properly equipped laboratory by trained operators and appropriate disposal procedures
are to be followed.
5. Apparatus
5.1 Atomic Absorption Spectrometer with Electrothermal Atomizer, equipped with an appropriate background corrector, a signal
output device such as a video display screen (VDS), a digital computer, a printer or strip chart recorder, printer, and an autosampler.
5.2 Grooved Pyrolytic Graphite-Coated Graphite Tubes, conforming to the instrument manufacturer’s specifications.
5.3 Pyrolytic Graphite Platforms, L’vov design, fitted to the tubes specified in 4.25.2.
5.4 Pyrolytic Graphite-Coated Graphite Tubes, platformless, conforming to the instrument manufacturer’s specifications.
5.5 Radiation Source for the Analyte—A hollow cathode lamp or electrodeless discharge lamp is suitable.
1
This practice is under the jurisdiction of ASTM Committee E01 on Analytical Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
Subcommittee E01.20 on Fundamental Practices.
Current edition approved June 1, 2006Dec. 1, 2014. Published June 2006 February 2015. Originally approved in 1995. Last previous edition approved in 20012006 as
E1770 – 95 (2001).(2006). DOI: 10.1520/E1770-95R06.10.1520/E1770-14.
2
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.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E1770 − 14
NOTE 1—The use of multi-element lamps is not generally recommended, since they may be subject to spectral line overlaps.
5.6 For general discussion of the theory and instrumental requirements of electrothermal atomic absorption spectrometric
analysis, see Practice E1184.
6. Reagents
6.1 Purity and Concentration of Reagents—The purity and concentration of common chemical reagents shall conform to
Practices E50. The reagents should be free of or contain minimal amounts (<0.01 μg/g) of the analyte of interest.
6.2 Magnesium Nitrate Solution [2 g/L Mg(NO ) ]—Dissolve 0.36 6 0.01 g high-purity Mg(NO ) ·6H O in about 50 mL of
3 2 3 2 2
water, in a 100-mL beaker, and transfer the solution into a 100-mL volumetric flask. Dilute to mark with water and mix. Store in
poly
...
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