ASTM E135-04a

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Designation: E 135 – 04a
Standard Terminology Relating to
Analytical Chemistry for Metals, Ores, and Related
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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 (e) 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.
absorption (of electromagnetic radiation), n—a decrease in
1.2 A definition is a single sentence with additional infor-
mation included in a Discussion. radiant energy when passing through matter, resulting in a
corresponding increase in the energy of the absorbing
1.3 Definitions identical to those published by another
standards organization or ASTM committee are identified with system.
accuracy, n—of methods of chemical analysis, a characteristic
the name of the organization or the identifying document and
ASTM committee. manifested by agreement. E 1914–98 (2003)
analytical curve—see calibration curve.
1.4 Definitions specific to a particular field (such as emis-
sion spectrometry) are identified with an italicized introductory analyte, n—in methods of chemical analysis, the component
determined by a method. E 1914–98 (2003)
phrase.
analytical gap, n—in atomic emission spectrometry, the re-
2. Referenced Documents
gion between two electrodes in which the specimen is
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2.1 ASTM Standards: excited and from which radiant energy is used for analysis.
E 180 Practice for Determining the Precision of ASTM analytical line, n—the particular wavelength of an element
Methods for Analysis and Testing of Industrial and Spe- used in determining the presence or concentration of that
cialty Chemicals element.
E 876 Practice for Use of Statistics in the Evaluation of arc, condensed—see discharge, triggered capacitor.
Spectrometric Data continuous dc, n—a self-maintaining dc discharge.
E 1914 Practice for Use of Terms Relating to the Develop- noncapacitive ac, n—in atomic emission spectrometry,a
ment and Evaluation of Methods for Chemical Analysis series of separate electrical discharges, individually self-
2.2 ISO Standard: initiating or initiated separately by another means, in which
ISO Guide 30—Terms and Definitions Used in Connection each current pulse has a polarity that is reversed from the
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with Reference Materials previous one.
arc line—not recommended, see atom line.
3. Significance and Use
atom line, n—a spectral line resulting from radiation emitted
3.1 Definitions given in Section 4 are intended for use in all
during electron transition as an excited atom returns to a
standards on analytical chemistry for metals, ores, and related lower energy level.
atomic emission spectrometry (AES), n—pertaining to emis-
sion spectrometry in the ultraviolet, visible, or infrared
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This terminology is under the jurisdiction of ASTM Committee E01 on
wavelength regions of the electromagnetic spectrum.
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
responsibility of Subcommittee E01.23 on Terminology. b-value, n—in statistics, the difference between the mean of a
Current edition approved July 1, 2004. Published September 2004. Originally
set of results on a material and its accepted reference value.
approved in 1958. Last previous edition approved in 2004 as E 135 – 04.
(Compare error.) E 1914–98 (2003)
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
between-laboratory standard deviation, s , n—the standard
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
R
Standards volume information, refer to the standard’s Document Summary page on
deviation of results obtained on the same material in
the ASTM website.
different laboratories (synonym: reproducibility).
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Available from American Standards Institute, 25 W. 43rd St., 4th Floor, New
E 1914–98 (2003)
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 – 04a
buffer, n—in spectrometric analysis, a substance that tends to sion spectrometry, the plot of the degree of blackening of the
minimize the effects of one or more elements on the developed
...