ASTM D2972-03

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D2972–03
Standard Test Methods for
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Arsenic in Water
This standard is issued under the fixed designation D2972; 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 (e) indicates an editorial change since the last revision or reapproval.
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1. Scope* Samples Containing Organic and Inorganic Constituents
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D5810 Guide for Spiking into Aqueous Samples
1.1 These test methods cover the photometric and atomic
D5847 Practice for the Writing Quality Control Specifica-
absorption determination of arsenic in most waters and waste-
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tions for Standard Test Methods for Water Analysis
waters. Three test methods are given as follows:
E60 Practice for Photometric and Spectrophotometric
Concentration Sections
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Methods for Chemical Analysis of Metals
Range
Test Method A—Silver Diethyldithio- 5 to 250 µg/L 7 to 15
E275 Practice for Describing and Measuring Performance
carbamate Colorimetric
of Ultraviolet, Visible, and Near Infrared Spectrophotom-
Test Method B—Atomic Absorption, 1to20µg/L 16to24
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eters
Hydride Generation
Test Method C—Atomic Absorption, 5to100 µg/L 25to33
Graphite Furnace
3. Terminology
1.2 The analyst should direct attention to the precision and
3.1 Definitions of Term Specific to This Standard:
bias statements for each test method. It is the user’s responsi- 3.1.1 For definitions of terms used in these test methods
bility to ensure the validity of these test methods for waters of
refer to Terminology D1129.
untested matrices. 3.2 Definitions of Terms Specific to This Standard:
1.3 This standard does not purport to address all of the
3.2.1 totalrecoverablearsenic—anarbitraryanalyticalterm
safety concerns, if any, associated with its use. It is the relating to the forms of arsenic that are determinable by the
responsibility of the user of this standard to establish appro-
digestion method which is included in the procedure. Some
priate safety and health practices and determine the applica- organic-arsenic compounds, such as phenylarsonic acid, diso-
bility of regulatory limitations prior to use. For specific hazard
dium methane arsonate, and dimethylarsonic acid, are not
statements, see Note 1 and Note 6. recovered completely during the digestion step.
2. Referenced Documents
4. Significance and Use
2.1 ASTM Standards:
4.1 Herbicides, insecticides, and many industrial effluents
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D1129 Terminology Relating to Water contain arsenic and are potential sources of water pollution.
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D1193 Specification for Reagent Water
Arsenic is significant because of its adverse physiological
D2777 Practice for Determination of Precision and Bias of effects on humans.
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Applicable Methods of Committee D19 on Water
5. Purity of Reagents
D3370 Practices for Sampling Water from Closed Con-
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duits 5.1 Reagent grade chemicals shall be used in all tests.
D3919 Practice for Measuring Trace Elements in Water by Unlessotherwiseindicated,itisintendedthatallreagentsshall
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Graphite Furnace Atomic Absorption Spectrophotometry conform to the specifications of the Committee on Analytical
D4841 Practice for Estimation of Holding Time for Water Reagents of the American Chemical Society, where such
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specifications are available. Other grades may be used, pro-
vided it is first ascertained that the reagent is of sufficiently
high purity to permit its use without lessening the accuracy of
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These test methods are under the jurisdiction of ASTM Committee D19 on
the determination.
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
Constituents in Water.
Current edition approved Jan. 10, 2003. Published January 2003. Originally
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approved in 1993. Last previous edition approved in 1997 as D2972–97. Annual Book of ASTM Standards, Vol 03.05.
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Similar to that appearing in Standard Methods for the Examination of Water Annual Book of ASTM Standards, Vol 03.06.
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and Wastewater, 12th edition,APHA, Inc., NewYork, NY, 1965, and identical with Reagent Chemicals, American Chemical Society Specifications, American
that in Brown, Eugene, Skougstad, M. W., and Fishman, M. J., “Methods for Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Collection and Analysis of Water Samples for Dissolved Minerals and Gases,” listed by the American Chemical Society, see Analar Standards for Laboratory
Techniques of Water-Resources Investigations of the U.S. Geological Survey, Book Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
5, Chapter , 1970 p. 46. and National Formulary, U.S. Pharmaceutical Convention, Inc. (USPC), Rockville,
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Annual Book of ASTM Standards, Vol 11.01. MD.
*A Summary of Changes section appears at the end of this standard.
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