Standard Test Methods for Cadmium in Water

SCOPE
1.1 These test methods cover the determination of dissolved and total recoverable cadmium in water and wastewater by atomic-absorption spectrophotometry and differential pulse anodic stripping voltammetry. Four test methods are included as follows: Concentration Range SectionsTest Method A—Atomic Absorption, Direct0.05 to 2.0 mg/L7 to 15Test Method B—Atomic Absorption, Chelation-Extraction5 to 200 μg/L16 to 24Test Method C—Differential PulseAnodic Stripping Voltammetry1 to 100 μg/L25 to 34Test Method D—Atomic Absorption, Graphite Furnace2 to 10 μg/L35 to 43
1.2 Test Method B can be used to determine cadmium in brines. It is the user's responsibility to ensure the validity of these test methods for waters of untested 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.

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Publication Date
09-Mar-2002
Technical Committee
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ASTM D3557-95 - Standard Test Methods for Cadmium in Water
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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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 3557 – 95
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Methods for
1
Cadmium in Water
This standard is issued under the fixed designation D 3557; 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.
3
1. Scope D 1691 Test Methods for Zinc in Water
3
D 1886 Test Methods for Nickel in Water
1.1 These test methods cover the determination of dissolved
D 3370 Practices for Sampling Water from Closed Con-
and total recoverable cadmium in water and wastewater by
3
duits
atomic-absorption spectrophotometry and differential pulse
3
2 D 3558 Test Methods for Cobalt in Water
anodic stripping voltammetry. Four test methods are included
3
D 3559 Test Methods for Lead in Water
as follows:
D 3919 Practice for Measuring Trace Elements in Water by
Concentration
3
Sections
Graphite Furnace Atomic Absorption Spectrophotometry
Range
Test Method A—Atomic Absorption, 0.05 to 2.0 7to15
D 4841 Practice for Estimation of Holding Time for Water
Direct mg/L
3
Samples Containing Organic and Inorganic Constituents
Test Method B—Atomic Absorption, 5 to 200 μg/L 16 to 24
E 60 Practice for Photometric and Spectrophotometric
Chelation-Extraction
4
Test Method C—Differential Pulse 1 to 100 μg/L 25 to 34
Methods for Chemical Analysis of Metals
Anodic Stripping Voltammetry
E 275 Practice for Describing and Measuring Performance
Test Method D—Atomic Absorption, 2 to 10 μg/L 35 to 43
of Ultraviolet, Visible, and Near Infrared Spectrophotom-
Graphite Furnace
5
eters
1.2 Test Method B can be used to determine cadmium in
brines. It is the user’s responsibility to ensure the validity of
3. Terminology
these test methods for waters of untested matrices.
3.1 Definitions—For definitions of terms used in these test
1.3 This standard does not purport to address all of the
methods, refer to Terminology D 1129.
safety concerns, if any, associated with its use. It is the
3.2 Definitions of Terms Specific to This Standard:
responsibility of the user of this standard to establish appro-
3.2.1 spiking solution—the standard solution added to the
priate safety and health practices and determine the applica-
polarographic cell that is used to quantitate the sample.
bility of regulatory limitations prior to use.
3.2.2 stripping peak potential—the applied potential versus
SCE at which the stripping peak current is a maximum.
2. Referenced Documents
3.2.3 SCE—saturated calomel electrode.
2.1 ASTM Standards:
3.2.4 stripping peak signal—the current measured at the
3
D 858 Test Methods for Manganese in Water
stripping peak maximum for a metal.
3
D 1066 Practice for Sampling Steam
3 4. Significance and Use
D 1068 Test Methods for Iron in Water
3
D 1129 Terminology Relating to Water 4.1 The test for cadmium is necessary because it is a
toxicant and because there is a limit specified for cadmium in
D 1192 Specification for Equipment for Sampling Water
3
and Steam in Closed Conduits potable water in the National Interim Primary Drinking Water
3
Regulations. This test serves to determine whether the cad-
D 1193 Specification for Reagent Water
3
D 1687 Test Methods for Chromium in Water mium content of potable water is above or below the accept-
3
able limit.
D 1688 Test Methods for Copper in Water
5. Purity of Reagents
1
These test methods are under the jurisdiction of ASTM Committee D-19 on
5.1 Reagent grade chemicals shall be used in all tests.
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
Constituents in Water.
Current edition approved Sept. 10, 1995. Published November 1995. Originally
4
Annual Book of ASTM Standards, Vol 03.05.
published as D 3557 – 77. Last previous edition D 3557 – 90.
5
Annual Book of ASTM Standards, Vol 03.06.
2
Platte, J. A., and Marcy, V. M., “A New Tool for the Water Chemist,” Industrial
Water Engineering, May 1965.
3
Annual Book of ASTM Standards, Vol 11.01.
1

---------------------- Page: 1 ----------------------
D 3557
Unless otherwise indicated, it is intended that all reagents shall 9. Interferences
conform to the specifications of the Committee on Analytical
9.1 Calcium concentrations above 1000 mg/L suppress the
6
Reagents of the American Chemical Society. Other grades
cadmium absorption. At 2000 mg/L of calcium the suppression
may be used, provided it is first ascertained that the reagent is
is 19 %.
of sufficiently high purity to permit its use without lessening
9.2 Sodium, potassium, sulfate, and chloride (9000 mg/L
the accuracy of the determination.
each), magnesium
...

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