ASTM E135-03c
(Terminology)Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
Standard Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
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 Definitions identical to those published by another standards organization or ASTM committee are identified with the name of the organization or the identifying document and ASTM committee.
1.4 Definitions specific to a particular field (such as emission spectrometry) are identified with an italicized introductory phrase.
General Information
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Standards Content (Sample)
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Designation: E 135 – 03c
Standard Terminology Relating to
Analytical Chemistry for Metals, Ores, and Related
1
Materials
This standard is issued under the fixed designation E 135; 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 (ε) indicates an editorial change since the last revision or reapproval.
1. Scope materials. The definitions should be used uniformly and
consistently. The purpose of this terminology is to promote
1.1 This is a compilation of terms commonly used in
clear understanding and interpretation of the standards in
analytical chemistry for metals, ores, and related materials.
which definitions are used.
Terms that are generally understood or defined adequately in
other readily available sources are either not included or their
4. Terminology Definitions
sources are identified.
absorbance, n—in spectrometry, the logarithm to the base 10
1.2 A definition is a single sentence with additional infor-
mation included in a Discussion. of the reciprocal of the transmittance, T.
1.3 Definitions identical to those published by another
A 5 log ~1/T!52log T (1)
10 10
standards organization orASTM committee are identified with
the name of the organization or the identifying document and
absorption (of electromagnetic radiation), n—a decrease in
ASTM committee.
radiant energy when passing through matter, resulting in a
1.4 Definitions specific to a particular field (such as emis-
corresponding increase in the energy of the absorbing
sion spectrometry) are identified with an italicized introductory
system.
phrase. absorption spectrometry, n—the branch of spectroscopy
pertaining to the absorption of electromagnetic radiation by
2. Referenced Documents
atoms, ions, radicals, and molecules.
2.1 ASTM Standards:
analytical curve—see calibration curve.
E 180 Practice for Determining the Precision of ASTM
analyte, n—in methods of chemical analysis, the component
Methods for Analysis and Testing of Industrial and Spe-
determined by a method.
2
cialty Chemicals
analytical gap, n—in optical emission spectrometry, the re-
E 876 Practice for Use of Statistics in the Evaluation of
gion between two electrodes in which the specimen is
3
Spectrometric Data
excited and from which radiant energy is used for analysis.
E 1914 Practice for Use of Terms Relating to the Develop-
analytical line, n—the particular wavelength of an element
4
ment and Evaluation of Methods for Chemical Analysis
used in determining the presence or concentration of that
2.2 ISO Standard:
element.
ISO Guide 30—Terms and Definitions Used in Connection
anneal, vt—in fire assay, to heat and then gradually cool a
5
with Reference Materials
metal to remove internal stresses and make the material less
brittle.
3. Significance and Use
arc, condensed—see triggered capacitor discharge.
3.1 Definitions given in Section 4 are intended for use in all
continuous dc, n—a self-maintaining dc discharge.
standards on analytical chemistry for metals, ores, and related
noncapacitive ac, n—in optical emission spectrometry,a
series of separate electrical discharges, individually self-
1
initiating or initiated separately by another means, in which
This terminology is under the jurisdiction of ASTM Committee E01 on
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
each current pulse has a polarity that is reversed from the
responsibility of Subcommittee E01.23 on Terminology.
previous one.
Current edition approved August 10, 2003. Published October 2003. Originally
noncapacitive, intermittent dc, n—a series of electrical
approved in 1958. Last previous edition approved in 2003 as E 135 – 03b.
2
discharges in which dc pulses are initiated by separate
Annual Book of ASTM Standards, Vol 15.05.
3
Annual Book of ASTM Standards, Vol 03.05.
means, either mechanically or electrically.
4
Annual Book of ASTM Standards, Vol 03.06.
noncondensed, intermittent dc—see arc, noncapacitive, in-
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Available from American Standards Institute, 25 W. 43rd St., 4th Floor, New
termittent dc.
York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E 135 – 03c
arc line—not recommended, see atom line. separate precious metals from lead and other base metals.
atom line, n—a spectral line resulting from radiation emitted densitometer—not recommended, see microphotometer.
during electron transition as an excited atom returns to a detection limit—a stated limiting value that designates the
lower energy level. lowest concentration or mass that can be estimated or
atomic absorption spectrometry, n—the branch of spectros-
...
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