ASTM D4382-95

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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: D 4382 – 95
AMERICAN SOCIETY FOR TESTING AND MATERIALS
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Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Barium in Water, Atomic Absorption Spectrophotometry,
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Graphite Furnace
This standard is issued under the fixed designation D 4382; 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.
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1. Scope Atomic Absorption Spectrophotometry
D 4841 Practice for Estimation of Holding Time for Water
1.1 This test method covers the determination of dissolved
2
Samples Containing Organic and Inorganic Constitutents
and total recoverable barium in most waters and wastewaters.
1.2 This test method was evaluated in the range from 33.5 to
3. Terminology
132 μg/L of barium. The range can be increased or decreased
3.1 Definitions:
by varying the volume of sample injected or the instrumental
settings. High concentrations may be diluted but preferably 3.1.1 For definitions of terms used in this test method, refer
to Terminology D 1129.
should be analyzed by direct aspiration atomic absorption
spectrophotometry. 3.2 Definitions of Terms Specific to This Standard:
1.3 This test method has been used successfully with waste 3.2.1 total recoverable barium—an arbitrary analytical term
treatment plant effluent water, lake water, filtered tap water, relating to the recoverable forms of barium that are determin-
and well water. It is the responsibility of the analyst to able by the digestion method which is included in this test
determine the suitability of the test method for other matrices. method.
1.4 This standard does not purport to address all of the
4. Summary of Test Method
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.1 Barium is determined by an atomic absorption spectro-
priate safety and health practices and determine the applica-
photometer used in conjunction with a graphite furnace. A
bility of regulatory limitations prior to use.
sample is placed in a graphite tube, evaporated to dryness,
charred (pyrolyzed or ashed), and atomized. The absorption
2. Referenced Documents
signal produced during atomization may be recorded and
2.1 ASTM Standards:
compared with values obtained from standards that have been
2
D 858 Test Methods for Manganese in Water
carried through the same process. This facilitates interpolation
2
D 1068 Test Methods for Iron in Water
of the level of barium in the solution being analyzed. Since the
2
D 1129 Terminology Relating to Water
graphite furnace uses the sample much more efficiently than
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D 1193 Specification for Reagent Water
flame atomization, the detection of low concentrations in small
2
D 1687 Test Methods for Chromium in Water
sample volumes is possible.
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D 1688 Test Methods for Copper in Water
2
NOTE 1—The same graphite furnace procedure may be applicable to
D 1886 Test Methods for Nickel in Water
2
determination of arsenic (see Test Methods D 2972), cadmium (see Test
D 2972 Test Methods for Arsenic in Water
2 Methods D 3557), chromium (see Test Methods D 1687), cobalt (see Test
D 3373 Test Method for Vanadium in Water
Methods D 3558), copper (see Test Methods D 1688), iron (see Test
2
D 3557 Test Methods for Cadmium in Water
Methods D 1068), lead (see Test Methods D 3559), manganese (see Test
2
D 3558 Test Methods for Cobalt in Water
Methods D 858), nickel (see Test Methods D 1886), selenium (see Test
2
D 3559 Test Methods for Lead in Water
Methods D 3859), and silver (see Test Methods D 3866).
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D 3859 Test Methods for Selenium in Water
4.2 Dissolved barium is determined on a sample filtered
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D 3866 Test Methods for Silver in Water
through a 0.45-μm membrane filter. The definition of dissolved
D 3919 Practice for Measuring Trace Elements in Water by
barium is arbitrary since very fine crystals of barium sulfate
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Graphite Furnace Atomic Absorption Spectrophotometry
may pass through the membrane filter.
D 4691 Practice for Measuring Elements in Water by Flame
4.3 Total recoverable barium is determined following acid
digestion and filtration. Because chlorides interfere with fur-
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nace procedures for some metals, the use of hydrochloric acid
This test method is under the jurisdiction of ASTM Committee D-19 on Water
and is the direct responsibility of Subcommittee D19.05 on Inorganic Constituents
in any digestion or solubilization step is to be avoided. If
in Water.
suspended material is not present, this digestion and filtration
Current edition approved Sept. 10, 1995. Published November 1995. Originally
may be omi
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