Standard Test Method for Chemical Analysis of Zinc-5% Aluminum-Mischmetal Alloys by ICP Emission Spectrometry

SIGNIFICANCE AND USE
This test method for the chemical analysis of metals and alloys is primarily intended to test such materials for compliance with compositional specifications. It is assumed that all those who use this test method will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory.
SCOPE
1.1 This test method covers the chemical analysis of zinc alloys having chemical compositions within the following limits:ElementConcentration Range, %Aluminum3.0-8.0Antimony0.002 maxCadmium0.025 maxCerium0.03-0.10Copper0.10 maxIron0.10 maxLanthanum0.03-0.10Lead0.026 maxMagnesium0.05 maxSilicon0.015 maxTin0.002 maxTitanium0.02 maxZirconium0.02 max
1.2 Included are procedures for elements in the following concentration ranges:ElementConcentration Range, %Aluminum3.0-8.0Cadmium0.0016-0.025Cerium0.005-0.10Iron0.0015-0.10Lanthanum0.009-0.10Lead0.002-0.026
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. Specific safety hazards statements are given in Section 7, 11.2, and 13.1.

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ASTM E1277-02 - Standard Test Method for Chemical Analysis of Zinc-5% Aluminum-Mischmetal Alloys by ICP Emission Spectrometry
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:E1277–02
Standard Test Method for
Chemical Analysis of Zinc-5% Aluminum-Mischmetal Alloys
1
by ICP Emission Spectrometry
This standard is issued under the fixed designation E 1277; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E29 Practice for Using Significant Digits in Test Data to
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Determine Conformance With Specifications
1.1 This test method covers the chemical analysis of zinc
E50 Practices for Apparatus, Reagents, and Safety Precau-
alloys having chemical compositions within the following
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tions for Chemical Analysis of Metals
limits:
E55 Practice for Sampling Wrought Nonferrous Metals for
Element Concentration Range, %
4
Determination of Chemical Composition
Aluminum 3.0–8.0
E88 Practice for Sampling Nonferrous Metals and Alloys
Antimony 0.002 max
4
in Cast Form for Determination of Chemical Composition
Cadmium 0.025 max
E 173 Practice for Conducting Interlaboratory Studies of
Cerium 0.03–0.10
4
Copper 0.10 max
Methods for Chemical Analysis of Metals
Iron 0.10 max
E 876 Practice for Use of Statistics in the Evaluation of
Lanthanum 0.03–0.10
5
Spectrometric Data
Lead 0.026 max
Magnesium 0.05 max
E 1601 Practice for Conducting an Interlaboratory Study to
Silicon 0.015 max
5
Evaluate the Performance of an Analytical Method
Tin 0.002 max
Titanium 0.02 max
3. Summary of Test Method
Zirconium 0.02 max
3.1 The sample is dissolved in mixed acids. The sample
1.2 Included are procedures for elements in the following
solution is introduced into the plasma source of an ICP
concentration ranges:
spectrometer and the intensities at selected wavelengths from
Element Concentration Range, %
theplasmaemissionspectrumarecomparedtotheintensitiesat
Aluminum 3.0–8.0
the same wavelengths measured with calibration solutions.
Cadmium 0.0016–0.025
Cerium 0.005–0.10
4. Significance and Use
Iron 0.0015–0.10
Lanthanum 0.009–0.10
4.1 This test method for the chemical analysis of metals and
Lead 0.002–0.026
alloys is primarily intended to test such materials for compli-
1.3 This standard does not purport to address all of the
ance with compositional specifications. It is assumed that all
safety concerns, if any, associated with its use. It is the those who use this test method will be trained analysts capable
responsibility of the user of this standard to establish appro-
of performing common laboratory procedures skillfully and
priate safety and health practices and determine the applica-
safely. It is expected that work will be performed in a properly
bility of regulatory limitations prior to use. Specific safety
equipped laboratory.
hazards statements are given in Section 7, 11.2, and 13.1.
5. Apparatus
2. Referenced Documents
5.1 Inductively-Coupled Argon Plasma (ICP) Atomic Emis-
2.1 ASTM Standards:
sion Spectrometer—The instrument is equipped with an argon-
2
D 1193 Specification for Reagent Water
plasma source, a sample transport system for introducing the
test sample and calibration solutions into the plasma. The
monochromator or polychromator must be capable of isolating
1
This test method is under the jurisdiction of ASTM Committee E01 on
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
responsibility of Subcommittee E01.05 on Zn, Sn, Pb, Be, and Other Metals.
3
Current edition approved October 10, 2002. Published December 2002. Origi- Annual Book of ASTM Standards, Vol 14.02.
4
nally approved in 1991. Last previous edition in 1996 as E 1277 – 96. Annual Book of ASTM Standards, Vol 3.05.
2 5
Annual Book of ASTM Standards, Vol 11.01. Annual Book of ASTM Standards, Vol 03.06.
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E1277–02
A
TABLE 1 Wavelengths and Instrument Conditions
remain undissolved). Transfer the solution to a 100-mL volu-
Element Wavelength Time, s No. Integ. BCor1 BCor2 metric flask, dilute to volume, and mix. Store in a polyethylene
bottle.
Al 3092.7 1.0 3 . .
Cd 2265.02 .5 3 2264.46 2265.58
6.4 Cadmium, Standard Solution (1 mL = 1.00 mg Cd)—
Ce 4186.6 .5 2 . .
Transfer 1.000 g of cadmium (purity: 99.95 % min) to a
Fe 2599.4 .5 2 . .
La 3988.5 .5 2 3987.54 3989.06 250-mLbeaker. Cover and add 40 mLof HNO (1 + 1) and 10
3
Pb 2832.97 1.0 3 . 2833.36
mL of HCl. After dissolution is complete, heat to boiling to
A
The tabulated conditions were those found satisfactory on one instrument.
remove oxides of nitrogen. Cool, transfer to a 1-L volumetric
Wavelengths are expressed in angstroms. Time=seconds for each integr
...

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