ASTM E2330-19
(Test Method)Standard Test Method for Determination of Concentrations of Elements in Glass Samples Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) for Forensic Comparisons
Standard Test Method for Determination of Concentrations of Elements in Glass Samples Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) for Forensic Comparisons
SIGNIFICANCE AND USE
4.1 This technique is destructive, in that the glass fragments may need to be crushed, and digested in acid.
4.2 Although the concentration ranges of the calibration curves shown in Appendix X1 are applicable to soda lime and borosilicate glass, this method is useful for the accurate measurement of element concentrations from a wide variety of glass samples.
4.3 The determination of the element concentrations in glass yields data that can be used to compare fragments.
4.4 It should be recognized that the method measures the bulk concentration of the target elements. Any extraneous material present on the glass that is not removed before digestion can result in inaccurate concentrations of the measured elements.
4.5 The precision and accuracy of the method should be established in each laboratory that employs the method.
SCOPE
1.1 One objective of a forensic glass examination is to compare glass samples to determine if they can be discriminated using their physical, optical or chemical properties (for example, color, refractive index (RI), density, elemental composition). If the samples are distinguishable in any of these observed and measured properties, it may be concluded that they did not originate from the same source of broken glass. If the samples are indistinguishable in all of these observed and measured properties, the possibility that they originated from the same source of glass cannot be eliminated. The use of an elemental analysis method such as inductively coupled plasma mass spectrometry yields high discrimination among sources of glass. (1-16)2
1.2 This test method covers a procedure for quantitative determination of the concentrations of magnesium (Mg), aluminum (Al), iron (Fe), titanium (Ti), manganese (Mn), rubidium (Rb), strontium (Sr), zirconium (Zr), barium (Ba), lanthanum (La), cerium (Ce), neodymium (Nd), samarium (Sm), and lead (Pb) in glass samples.
1.3 This procedure is applicable to irregularly shaped samples as small as 200 micrograms, for the comparison of fragments of a known source to the recovered fragments from a questioned source. These elements are present in soda lime and borosilicate glass in μg/L to % levels.
1.4 This procedure is applicable to other elements, other types of glass, and other concentration ranges with appropriate modifications of the digestion procedure (if needed for full recovery of the additional elements), calibration standards and the mass spectrometer conditions. Calcium and potassium, for example, could be added to the list of analytes in a modified analysis scheme. Alternative methods for the determination of concentrations of elements in glass are listed in the references.
1.5 For any given glass, approximately 40 elements are likely to be present at detectable concentrations using this procedure with minor modifications. The element set stated here is an example of some of these elements that can be detected in glass and used for forensic comparisons.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 This standard cannot replace knowledge, skills, or abilities acquired through education, training, and experience and is to be used in conjunction with professional judgment by individuals with such discipline-specific knowledge, skills, and abilities.
1.8 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.
1.9 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 Organiz...
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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.
Designation: E2330 − 19 An American National Standard
Standard Test Method for
Determination of Concentrations of Elements in Glass
Samples Using Inductively Coupled Plasma Mass
1
Spectrometry (ICP-MS) for Forensic Comparisons
This standard is issued under the fixed designation E2330; 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 1.5 For any given glass, approximately 40 elements are
likely to be present at detectable concentrations using this
1.1 One objective of a forensic glass examination is to
procedure with minor modifications. The element set stated
compare glass samples to determine if they can be discrimi-
here is an example of some of these elements that can be
nated using their physical, optical or chemical properties (for
detected in glass and used for forensic comparisons.
example, color, refractive index (RI), density, elemental com-
position). If the samples are distinguishable in any of these 1.6 The values stated in SI units are to be regarded as
observed and measured properties, it may be concluded that standard. No other units of measurement are included in this
they did not originate from the same source of broken glass. If standard.
the samples are indistinguishable in all of these observed and
1.7 This standard cannot replace knowledge, skills, or
measured properties, the possibility that they originated from
abilities acquired through education, training, and experience
the same source of glass cannot be eliminated. The use of an
and is to be used in conjunction with professional judgment by
elemental analysis method such as inductively coupled plasma
individuals with such discipline-specific knowledge, skills, and
mass spectrometry yields high discrimination among sources
abilities.
2
of glass. (1-16)
1.8 This standard does not purport to address all of the
1.2 This test method covers a procedure for quantitative
safety concerns, if any, associated with its use. It is the
determination of the concentrations of magnesium (Mg), alu-
responsibility of the user of this standard to establish appro-
minum (Al), iron (Fe), titanium (Ti), manganese (Mn), ru-
priate safety, health, and environmental practices and deter-
bidium (Rb), strontium (Sr), zirconium (Zr), barium (Ba),
mine the applicability of regulatory limitations prior to use.
lanthanum (La), cerium (Ce), neodymium (Nd), samarium
1.9 This international standard was developed in accor-
(Sm), and lead (Pb) in glass samples.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
1.3 This procedure is applicable to irregularly shaped
Development of International Standards, Guides and Recom-
samples as small as 200 micrograms, for the comparison of
mendations issued by the World Trade Organization Technical
fragments of a known source to the recovered fragments from
Barriers to Trade (TBT) Committee.
a questioned source. These elements are present in soda lime
and borosilicate glass in µg/L to % levels.
2. Referenced Documents
1.4 This procedure is applicable to other elements, other
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2.1 ASTM Standards:
types of glass, and other concentration ranges with appropriate
E177 Practice for Use of the Terms Precision and Bias in
modifications of the digestion procedure (if needed for full
ASTM Test Methods
recovery of the additional elements), calibration standards and
the mass spectrometer conditions. Calcium and potassium, for
3. Summary of Test Method
example, could be added to the list of analytes in a modified
analysis scheme. Alternative methods for the determination of 3.1 The glass fragments are digested using a mixture of
concentrations of elements in glass are listed in the references. hydrofluoric, nitric and hydrochloric acids. Following acid
digestion,thesamplesaretakentodrynesstoeliminatemostof
the silicate matrix and the excess acids. Then an internal
1
ThistestmethodisunderthejurisdictionofASTMCommitteeE30onForensic
Sciences and is the direct responsibility of Subcommittee E30.01 on Criminalistics.
Current edition approved Dec. 1, 2019. Published January 2020. Originally
3
approved in 2004. Last previous edition approved in 2012 as E2330 – 12. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/E2330-19. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
The boldface numbers in parentheses refer to a list of references at the end of S
...
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: E2330 − 12 E2330 − 19
Standard Test Method for
Determination of Concentrations of Elements in Glass
Samples Using Inductively Coupled Plasma Mass
1
Spectrometry (ICP-MS) for Forensic Comparisons
This standard is issued under the fixed designation E2330; 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 One objective of a forensic glass examination is to compare glass samples to determine if they can be discriminated using
their physical, optical or chemical properties (for example, color, refractive index (RI), density, elemental composition). If the
samples are distinguishable in any of these observed and measured properties, it may be concluded that they did not originate from
the same source of broken glass. If the samples are indistinguishable in all of these observed and measured properties, the
possibility that they originated from the same source of glass cannot be eliminated. The use of an elemental analysis method such
2
as inductively coupled plasma mass spectrometry yields high discrimination among sources of glass. (1-16)
1.2 This test method covers a procedure for quantitative determination of the concentrations of magnesium (Mg), aluminum
(Al), iron (Fe), titanium (Ti), manganese (Mn), rubidium (Rb), strontium (Sr), zirconium (Zr), barium (Ba), lanthanum (La), cerium
(Ce), neodymium (Nd), samarium (Sm), and lead (Pb) in glass samples.
1.3 This procedure is applicable to irregularly shaped samples as small as 200 micrograms, for the comparison of fragments of
a known source to the recovered fragments from a questioned source. These elements are present in soda lime and borosilicate
glass in ppbμg/L to % levelslevels.
1.4 This procedure is applicable to other elements, other types of glass, and other concentration ranges with appropriate
modifications of the digestion procedure (if needed for full recovery of the additional elements), calibration standards and the mass
spectrometer conditions. Calcium and potassium, for example, could be added to the list of analytes in a modified analysis scheme.
Alternative methods for the determination of concentrations of elements in glass are listed in the references.
1.5 For any given glass, approximately 40 elements are likely to be present at detectable concentrations using this procedure
with minor modifications. The element set stated here is an example of some of these elements that can be detected in glass and
used for forensic comparisons.
1.6 This guide cannot replace knowledge, skill, or ability acquired through appropriate education, training, and experience and
should be used in conjunction with sound professional judgment.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 This standard cannot replace knowledge, skills, or abilities acquired through education, training, and experience and is to
be used in conjunction with professional judgment by individuals with such discipline-specific knowledge, skills, and abilities.
1.8 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.9 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.
1
This test method is under the jurisdiction of ASTM Committee E30 on Forensic Sciences and is the direct responsibility of Subcommittee E30.01 on Criminalistics.
Current edition approved June 15, 2012Dec. 1, 2019. Published July 2012January 2020. Originally approved in 2004. Last previous edition approved in 20042012 as E2330
– 04.12. DOI: 10.1520/E2330-12.10.1520/E2330-19.
2
The boldface numbers in parentheses refer to a list of references at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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