ASTM D3372-17
(Test Method)Standard Test Method for Molybdenum in Water
Standard Test Method for Molybdenum in Water
SIGNIFICANCE AND USE
5.1 Molybdenum can be found in waste that results from chemical cleaning of components in which the metal is alloyed.
5.2 National Pollution Discharge Elimination System (NPDES) permits or other standards, or both, require monitoring pollutants in waste discharged onto the water shed of, or into, navigable waters, and those disposed of in such a manner that eventual contamination of underground water could result.
5.3 This test method affords an accurate and sensitive means of determining compliance with those permits.
5.4 ICP-MS or ICP-AES may also be appropriate but at a higher instrument cost. See Test Methods D5673 and D1976.
SCOPE
1.1 This test method covers the determination of dissolved and total recoverable molybdenum in most waters, wastewaters, and brines by atomic absorption spectroscopy.2
1.2 This test method is applicable in the range from 1 to 25 μg/L of molybdenum. The range may be extended by dilution of the sample.
1.3 This test method has been used successfully with natural and reagent waters. It is the user's responsibility to ensure the validity of this test method for waters of untested matrices.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversion to inch-pound units that are provided for information only and are not considered standard.
1.5 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 precautionary statements, see 8.16 and 11.12.
1.6 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.
General Information
Relations
Buy Standard
Standards Content (Sample)
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: D3372 − 17
Standard Test Method for
1
Molybdenum in Water
This standard is issued under the fixed designation D3372; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* D1193 Specification for Reagent Water
D1976 Test Method for Elements in Water by Inductively-
1.1 This test method covers the determination of dissolved
Coupled Argon Plasma Atomic Emission Spectroscopy
and total recoverable molybdenum in most waters,
2 D2777 Practice for Determination of Precision and Bias of
wastewaters, and brines by atomic absorption spectroscopy.
Applicable Test Methods of Committee D19 on Water
1.2 This test method is applicable in the range from 1 to 25
D3370 Practices for Sampling Water from Closed Conduits
µg/L of molybdenum. The range may be extended by dilution
D4691 Practice for Measuring Elements in Water by Flame
of the sample.
Atomic Absorption Spectrophotometry
1.3 Thistestmethodhasbeenusedsuccessfullywithnatural D4841 Practice for Estimation of Holding Time for Water
Samples Containing Organic and Inorganic Constituents
and reagent waters. It is the user’s responsibility to ensure the
validity of this test method for waters of untested matrices. D5673 Test Method for Elements in Water by Inductively
Coupled Plasma—Mass Spectrometry
1.4 The values stated in SI units are to be regarded as
D5810 Guide for Spiking into Aqueous Samples
standard. The values given in parentheses are mathematical
D5847 Practice for Writing Quality Control Specifications
conversion to inch-pound units that are provided for informa-
for Standard Test Methods for Water Analysis
tion only and are not considered standard.
1.5 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3.1.1 For definitions of terms used in this standard, refer to
bility of regulatory limitations prior to use. For specific Terminology D1129.
precautionary statements, see 8.16 and 11.12.
3.2 Definitions of Terms Specific to This Standard:
1.6 This international standard was developed in accor-
3.2.1 continuing calibration blank, n—a solution contain-
dance with internationally recognized principles on standard-
ing no analytes (of interest) which is used to verify blank
ization established in the Decision on Principles for the
response and freedom from carryover.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 3.2.2 continuing calibration verification, n—a solution (or
setofsolutions)ofknownconcentrationusedtoverifyfreedom
Barriers to Trade (TBT) Committee.
from excessive instrumental drift; the concentration is to cover
2. Referenced Documents
the range of calibration curve.
3
2.1 ASTM Standards:
3.2.3 laboratory control sample, n—a solution with the
D1129 Terminology Relating to Water
certified concentration(s) of the analytes.
1
3.2.4 total recoverable molybdenum, n—a descriptive term
This test method is under the jurisdiction of ASTM Committee D19 on Water
and is the direct responsibility of Subcommittee D19.05 on Inorganic Constituents
relating to the metal forms of molybdenum recovered in the
in Water.
acid-digestion procedure specified in this test standard.
Current edition approved June 1, 2017. Published June 2017. Originally
approved in 1975. Last previous edition approved in 2012 as D3372 – 12. DOI:
10.1520/D3372-17. 4. Summary of Test Method
2
Chau, Y. K., and Lum-Shue-Chan, K., “Atomic Absorption Determination of
4.1 Molybdenum is determined by atomic-absorption spec-
Microgram Quantities of Molybdenum in Lake Waters,” Analytica Chimica Acta,
Vol 48, 1969, p. 205.
trophotometry. The element is chelated with
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
8-hydroxyquinoline, extracted with methyl isobutyl ketone,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and the extract aspirated into the nitrous oxide-acetylene flame
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. of the spectrophotometer.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Driv
...
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: D3372 − 12 D3372 − 17
Standard Test Method for
1
Molybdenum in Water
This standard is issued under the fixed designation D3372; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This test method covers the determination of dissolved and total recoverable molybdenum in most waters, wastewaters, and
2
brines by atomic absorption spectroscopy.
1.2 This test method is applicable in the range from 1 to 25 μg/L of molybdenum. The range may be extended by dilution of
the sample.
1.3 This test method has been used successfully with natural and reagent waters. It is the user’s responsibility to ensure the
validity of this test method for waters of untested matrices.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values statedgiven
in each system are mathematical conversions and may not be exact equivalents; therefore, each system shall be used independently
of the other.parentheses are mathematical conversion to inch-pound units that are provided for information only and are not
considered standard.
1.5 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 precautionary statements, see Note 38.16 and Note 1111.12.
1.6 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.
2. Referenced Documents
3
2.1 ASTM Standards:
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
D1976 Test Method for Elements in Water by Inductively-Coupled Argon Plasma Atomic Emission Spectroscopy
D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
D3370 Practices for Sampling Water from Closed Conduits
D4691 Practice for Measuring Elements in Water by Flame Atomic Absorption Spectrophotometry
D4841 Practice for Estimation of Holding Time for Water Samples Containing Organic and Inorganic Constituents
D5673 Test Method for Elements in Water by Inductively Coupled Plasma—Mass Spectrometry
D5810 Guide for Spiking into Aqueous Samples
D5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
3. Terminology
3.1 Definitions: For definitions of terms used in this test method, refer to Terminology D1129.
3.1.1 For definitions of terms used in this standard, refer to Terminology D1129.
1
This test method is under the jurisdiction of ASTM Committee D19 on Water and is the direct responsibility of Subcommittee D19.05 on Inorganic Constituents in Water.
Current edition approved Sept. 1, 2012June 1, 2017. Published October 2012June 2017. Originally approved in 1975. Last previous edition approved in 20022012 as
ε1
D3372 – 02 (2007)D3372 . – 12. DOI: 10.1520/D3372-12.10.1520/D3372-17.
2
Chau, Y. K., and Lum-Shue-Chan, K., “Atomic Absorption Determination of Microgram Quantities of Molybdenum in Lake Waters,” Analytica Chimica Acta, Vol 48,
1969, p. 205.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D3372 − 17
3.2 Definitions of Terms Specific to This Standard:
3.2.1 continuing calibration blank, n—a solution containing no analytes (of interest) which is used to verify blank response and
freedom from carryover.
3.2.2 continuing calibration verification, n—a solution (or set of solutions) of known concentration used to verify freedom from
excessive instrumental dri
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.