ASTM D5258-02(2007)
(Practice)Standard Practice for Acid-Extraction of Elements from Sediments Using Closed Vessel Microwave Heating
Standard Practice for Acid-Extraction of Elements from Sediments Using Closed Vessel Microwave Heating
SIGNIFICANCE AND USE
Partial extraction of soils and sediments can provide information on the availability of elements to leeching, water quality changes, or other site conditions.
Rapid heating, in combination with temperatures in excess of the atmospheric boiling point of nitric acid, reduces sample preparation or reaction times.
Little or no acids are lost to boiling or evaporation in the closed digestion vessel so additional portions of acid may not be required. Increased blank corrections from trace impurities in acid are minimized.
SCOPE
1.1 This practice covers the digestion of soils and sediments for subsequent determination of acid-extractable concentrations of certain elements by such techniques as atomic absorption and atomic emission spectroscopy.
1.1.1 Concentrations of arsenic, cadmium, copper, lead, magnesium, manganese, nickel, and zinc can be extracted from the preceding materials. Other elements may be determined using this practice.
1.2 The analytical sample is arbitrarily defined as that which passes a 10-mesh (approximately 2-mm openings) screen and is prepared according to Practice D 3974.
1.3 Actual element quantitation can be accomplished by following the various test methods under other appropriate ASTM standards for element(s) of interest.
1.4 The detection limit and linear concentration range for each element is dependent on the atomic absorption or emission spectrophotometric technique employed and may be found in the manual accompanying the instrument used.
1.5 Before selecting a digestion technique, the user should consult the appropriate quantitation standard(s) for any special analytical considerations, and Practice D 3974 for any special preparatory considerations.
1.6 The extent of extraction of elements from soils and sediments by this method is dependent upon the physical and mineralogic characteristics of the prepared sample.
1.7 The values stated in both inch-pound and SI units are to be regarded separately as the standard. The values given in parentheses are for information only.
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. For specific hazard statements, see Section 8.
General Information
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D5258 − 02(Reapproved 2007)
Standard Practice for
Acid-Extraction of Elements from Sediments Using Closed
1
Vessel Microwave Heating
This standard is issued under the fixed designation D5258; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope bility of regulatory limitations prior to use. For specific hazard
statements, see Section 8.
1.1 Thispracticecoversthedigestionofsoilsandsediments
for subsequent determination of acid-extractable concentra-
2. Referenced Documents
tions of certain elements by such techniques as atomic absorp-
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tion and atomic emission spectroscopy. 2.1 ASTM Standards:
1.1.1 Concentrations of arsenic, cadmium, copper, lead,
D1193Specification for Reagent Water
magnesium,manganese,nickel,andzinccanbeextractedfrom D3974Practices for Extraction of Trace Elements from
the preceding materials. Other elements may be determined
Sediments
using this practice. 3
2.2 Code of Federal Regulations:
1.2 Theanalyticalsampleisarbitrarilydefinedasthatwhich
CFR Title 21, Part 1030, and Title 47, Part 18
passes a 10-mesh (approximately 2-mm openings) screen and
is prepared according to Practice D3974.
3. Summary of Practice
1.3 Actual element quantitation can be accomplished by 3.1 The chemical portion of this practice involves acid
following the various test methods under other appropriate
digestion to dissociate the elements not interstitially bound in
ASTM standards for element(s) of interest. silicate lattices.
1.4 The detection limit and linear concentration range for
3.2 The sample is digested with nitric acid in a closed
each element is dependent on the atomic absorption or emis- fluoropolymer vessel using microwave heating to an internal
6 2
sionspectrophotometrictechniqueemployedandmaybefound
pressure of 100 psi (6.89×10 dynes/cm ).
in the manual accompanying the instrument used.
3.3 This practice provides a sample suitable for analysis by
1.5 Before selecting a digestion technique, the user should
atomic absorption or emission spectrophotometry.
consult the appropriate quantitation standard(s) for any special
analytical considerations, and Practice D3974 for any special
4. Significance and Use
preparatory considerations.
4.1 Partial extraction of soils and sediments can provide
1.6 The extent of extraction of elements from soils and
information on the availability of elements to leeching, water
sediments by this method is dependent upon the physical and
quality changes, or other site conditions.
mineralogic characteristics of the prepared sample.
4.2 Rapid heating, in combination with temperatures in
1.7 The values stated in both inch-pound and SI units are to
excess of the atmospheric boiling point of nitric acid, reduces
be regarded separately as the standard. The values given in
sample preparation or reaction times.
parentheses are for information only.
4.3 Littleornoacidsarelosttoboilingorevaporationinthe
1.8 This standard does not purport to address all of the
closed digestion vessel so additional portions of acid may not
safety concerns, if any, associated with its use. It is the
be required. Increased blank corrections from trace impurities
responsibility of the user of this standard to establish appro-
in acid are minimized.
priate safety and health practices and determine the applica-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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This practice is under the jurisdiction ofASTM Committee D19 on Water and contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
isthedirectresponsibilityofSubcommitteeD19.07onSediments,Geomorphology, Standards volume information, refer to the standard’s Document Summary page on
and Open-Channel Flow. the ASTM website.
3
Current edition approved June 15, 2007. Published July 2007. Originally Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
approved in 1992. Last previous edition approved in 2002 as D5258–02. DOI: Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
10.1520/D5258-02R07. www.dodssp.daps.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D5258 − 02 (2007)
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5. Interferences where such specifications are available. Other grades may be
used provided it is first ascertained that the reagent is of
5.1 No interferences to the digestion of soils and sediments
sufficiently high purity to permit its use without lessening the
using microwave heating have been observed.
accuracy of the determination.
5.2 Precautions should be e
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