ASTM D3352-03
(Test Method)Standard Test Method for Strontium Ion in Brackish Water, Seawater, and Brines
Standard Test Method for Strontium Ion in Brackish Water, Seawater, and Brines
SCOPE
1.1 This test method covers the determination of soluble strontium ion in brackish water, seawater, and brines by atomic absorption spectrophotometry.
1.2 Samples containing from 5 to 2100 mg/L of strontium may be analyzed by this test method.
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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Designation: D 3352 – 03
Standard Test Method for
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Strontium Ion in Brackish Water, Seawater, and Brines
This standard is issued under the fixed designation D 3352; 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* provides the radiation. The metal atoms to be measured are
placed in the beam of radiation by aspirating the specimen into
1.1 This test method covers the determination of soluble
an oxidant-fuel flame. A monochromator isolates the charac-
strontium ion in brackish water, seawater, and brines by atomic
teristic radiation from the hollow cathode lamp and a photo-
absorption spectrophotometry.
sensitive device measures the attenuated transmitted radiation.
1.2 Samples containing from 5 to 2100 mg/L of strontium
4.2 Since the variable and sometimes high concentrations of
may be analyzed by this test method.
matrix materials in the waters and brines affect absorption
1.3 This standard does not purport to address all of the
differently, it is difficult to prepare standards sufficiently similar
safety concerns, if any, associated with its use. It is the
to the waters and brines. To overcome this difficulty, the
responsibility of the user of this standard to establish appro-
method of additions is used in which three identical samples
priate safety and health practices and determine the applica-
are prepared and varying amounts of a standard added to two
bility of regulatory limitations prior to use.
of them. The three samples are then aspirated, the concentra-
2. Referenced Documents tion readings recorded, and the original sample concentration
calculated.
2.1 ASTM Standards:
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D 1129 Terminology Relating to Water
5. Significance and Use
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D 1193 Specification for Reagent Water
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5.1 This test method can be used to determine strontium
D 2777 Practice for Determination of Precision and Bias of
2 ions in brackish water, seawater, and brines.
Applicable Methods of Committee D19 on Water
D 3370 Practices for Sampling Water from Closed Con-
6. Interferences
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duits
2 6.1 The chemical suppression caused by silicon, aluminum,
D 5810 Guide for Spiking into Aqueous Samples
and phosphate is controlled by adding lanthanum. The lantha-
D 5847 Practice for Writing Quality Control Specifications
3 num also controls ionization interference.
for Standard Test Methods in Water Analysis
7. Apparatus
3. Terminology
7.1 Atomic Absorption Spectrophotometer—The instrument
3.1 Definitions—For definitions of terms used in this test
shall consist of atomizer and burner, suitable pressure-
method, refer to Terminology D 1129.
regulating devices capable of maintaining constant oxidant and
4. Summary of Test Method fuel pressure for the duration of the test, a hollow cathode lamp
for each metal to be tested, an optical system capable of
4.1 This test method is dependent on the fact that metallic
isolating the desired line of radiation, an adjustable slit, a
elements, in the ground state, will absorb light of the same
photomultiplier tube or other photosensitive device as a light
wavelength they emit when excited. When radiation from a
measuring and amplifying device, and a read-out mechanism
given excited element is passed through a flame containing
for indicating the amount of absorbed radiation.
ground state atoms of that element, the intensity of the
transmitted radiation will decrease in proportion to the amount
of the ground state element in the flame. A hollow cathode
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lamp whose cathode is made of the element to be determined For additional information on atomic absorption, see the following references:
Angino, E. E., and Billings, G. K., Atomic Absorption Spectrophotometry in
Geology, Elsevier Publishing Co., New York, N.Y., 1967. Dean, J. A., and Rains, T.
C., Editors, Flame Emission and Atomic Absorption Spectrometry Vol 1 − Theory,
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This test method is under the jurisdiction of ASTM Committee D19 on Water Marcel Dekker, New York, NY, 1969.
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and is the direct responsibility of Subcommittee D19.05 on Inorganic Constituents Additional information is contained in the following references: Fletcher, G. F.,
in Water. and Collins, A. G., “Atomic Absorption Methods of Analysis of Oilfield Brines:
Current edition approved June 10, 2003. Published July 2003. Originally Barium, Calcium, Copper, Iron, Lead, Lithium, Magnesium, Manganese, Potassium,
approved in 1974. Last previous edition approved in 1999 as D 3352 – 94 (1999). Sodium, Strontium, and Zinc,” U.S. Bureau of Mines, Report of Investigations
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Annual Book of ASTM Standards, Vol 11.01. 7861, 1974, 14 pp. Collins, A. G., Geochemistry of Oilfield Waters,
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