Standard Test Methods for Cobalt in Water

SIGNIFICANCE AND USE
Most waters rarely contain more than trace concentrations of cobalt from natural sources. Although trace amounts of cobalt seem to be essential to the nutrition of some animals, large amounts have pronounced toxic effects on both plant and animal life.
SCOPE
1.1 These test methods cover the determination of dissolved and total recoverable cobalt in water and wastewater by atomic absorption spectrophotometry. Three test methods are included as follows: Concentration RangeSectionsTest Method A—Atomic Absorption, Direct0.1 to 10 mg/L7 to 16Test Method B—Atomic Absorption, Chelation-Extraction10 to 1000 g/L17 to 26Test Method C—Atomic Absorption, Graphite Furnace5 to 100 g/L27 to 36
1.2 Test Method A has been used successfully with reagent water, potable water, river water, and wastewater. Test Method B has been used successfully with reagent water, potable water, river water, sea water and brine. Test Method C was successfully evaluated in reagent water, artificial seawater, river water, tap water, and a synthetic brine. It is the analyst's responsibility to ensure the validity of these test methods for other matrices.
1.3 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 11.7.1, 21.10, and 23.10.

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Publication Date
09-Jun-2003
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D 3558–03
Standard Test Methods for
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Cobalt in Water
This standard is issued under the fixed designation D 3558; 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.
This standard has been approved for use by agencies of the Department of Defense.
3
1. Scope* D 1688 Test Methods for Copper in Water
3
D 1691 Test Methods for Zinc in Water
1.1 These test methods cover the determination of dissolved
3
2
D 1886 Test Methods for Nickel in Water
and total recoverable cobalt in water and wastewater by
D 2777 Practice for Determination of Precision and Bias of
atomic absorption spectrophotometry. Three test methods are
3
Applicable Methods of Committee D19 on Water
included as follows:
D 3370 Practices for Sampling Water from Closed Con-
Concentration Range Sections
3
duits
Test Method A—Atomic Absorption,
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Direct 0.1 to 10 mg/L 7 to 16
D 3557 Test Methods for Cadmium in Water
Test Method B—Atomic Absorption,
3
D 3559 Test Methods for Lead in Water
Chelation-Extraction 10 to 1000 µg/L 17 to 26
D 3919 Practice for Measuring Trace Elements in Water by
Test Method C—Atomic Absorption,
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Graphite Furnace 5 to 100 µg/L 27 to 36
Graphite FurnaceAtomicAbsorption Spectrophotometry
D 4841 Practice for Estimation of Holding Time for Water
1.2 Test Method A has been used successfully with reagent
3
Samples Containing Organic and Inorganic Constituents
water, potable water, river water, and wastewater. Test Method
3
D 5810 Guide for Spiking into Aqueous Samples
Bhasbeenusedsuccessfullywithreagentwater,potablewater,
D 5847 Practice for Writing Quality Control Specifications
river water, sea water and brine. Test Method C was success-
4
for Standard Test Methods for Water Analysis
fully evaluated in reagent water, artificial seawater, river water,
tapwater,andasyntheticbrine.Itistheanalyst’sresponsibility
3. Terminology
to ensure the validity of these test methods for other matrices.
3.1 Definitions:
1.3 This standard does not purport to address all of the
3.1.1 For definitions of terms used in these test methods,
safety concerns, if any, associated with its use. It is the
refer to Terminology D 1129.
responsibility of the user of this standard to establish appro-
3.2 Definitions of Terms Specific to This Standard:
priate safety and health practices and determine the applica-
3.2.1 total recoverable cobalt—an arbitrary analytical term
bility of regulatory limitations prior to use. For specific hazard
relating to the recoverable forms of cobalt that are determin-
statements, see 11.7.1, 21.10, and 23.10.
able by the digestion method which is included in the proce-
2. Referenced Documents
dure.
2.1 ASTM Standards:
4. Significance and Use
3
D 858 Test Methods for Manganese in Water
3
4.1 Most waters rarely contain more than trace concentra-
D 1066 Practice for Sampling Steam
3
tionsofcobaltfromnaturalsources.Althoughtraceamountsof
D 1068 Test Methods for Iron in Water
3
cobalt seem to be essential to the nutrition of some animals,
D 1129 Terminology Relating to Water
3
large amounts have pronounced toxic effects on both plant and
D 1193 Specification for Reagent Water
3
animal life.
D 1687 Test Methods for Chromium in Water
5. Purity of Reagents
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These test methods are under the jurisdiction of ASTM Committee D19 on
5.1 Reagent grade chemicals shall be used in all tests.
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
Unless otherwise indicated, it is intended that all reagents shall
Constituents in Water.
conform to the specifications of the Committee on Analytical
Current edition approved June 10, 2003. Published July 2003. Originally
approved in 1977. Last previous edition approved in 1998 as D 3558 – 94 (1998).
2
Platte, J.A., and March,V. M., “ANewTool for theWater Chemist,” Industrial
Water Engineering, May 1965.
3 4
Annual Book of ASTM Standards, Vol 11.01. Annual Book of ASTM Standards, Vol 11.02.
*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.
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D 3558–03
Reagents of the American Chemical Society where such 9.2 Other metals usually do not interfere in the determina-
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specifications are available. Other grades may be used, tion of cobalt by increasing or decreasing the amount of
provided it is first ascertained that the reagent is of sufficiently absorbed radiation. The most common interference is caused
high purity to permit its use without lessening the accuracy of by a chemical reaction in the fl
...

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