ASTM D5086-01

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Designation:D5086–01
Standard Test Method for
Determination of Calcium, Magnesium, Potassium, and
Sodium in Atmospheric Wet Deposition by Flame Atomic
1
Absorption Spectrophotometry
This standard is issued under the fixed designation D 5086; 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.
1. Scope D 1129 Terminology Relating to Water
D 1193 Specification for Reagent Water
1.1 This test method is applicable to the determination of
D 1356 Terminology Relating to Sampling and Analysis of
calcium, magnesium, potassium, and sodium in atmospheric
Atmospheres
wet deposition (rain, snow, sleet, and hail) by flame atomic
2
D 2777 Practice for Determination of Precision and Bias of
absorption spectrophotometry (FAAS). (1)
Applicable Methods of Committee D19 on Water
1.2 The concentration ranges are listed below. The range
D 4453 Practice for Handling of Ultra-Pure Water Samples
tested was confirmed using the interlaboratory collaborative
D 4691 Practice for Measuring Elements inWater by Flame
test (see Table 1 for a statistical summary of the collaborative
Atomic Absorption Spectrophotometry
test).
D 5012 Guide for Preparation of Materials Used for the
MDL Range of Method Range Tested
Collection and Preservation of Atmospheric Wet Deposi-
(mg/L) (2) (mg/L) (mg/L)
tion
Calcium 0.009 0.03–3.00 0.168–2.939
E 131 Terminology Relating to Molecular Spectroscopy
Magnesium 0.003 0.01–1.00 0.039–0.682
E 275 Practice for Describing and Measuring Performance
Potassium 0.003 0.01–1.00 0.029–0.499
Sodium 0.003 0.01–2.00 0.105–1.84
of Ultraviolet, Visible, and Near Infrared Spectrophotom-
eters
1.3 The method detection limit (MDL) is based on single
E 694 Specification for Laboratory Glass VolumetricAppa-
operator precision (2) and may be higher or lower for other
ratus
operators and laboratories. Many workers have found that this
IEEE/ASTM SI 10 Standard for Use of the International
test method is reliable at lower levels than were tested, but the
System of Units (SI): The Modern Metric System
precision and bias data presented are insufficient to justify their
use at lower levels.
3. Terminology
1.4 This standard does not purport to address all of the
3.1 Definitions—For definitions of terms used in this test
safety concerns, if any, associated with its use. It is the
method, refer toTerminologies D 883, D 1129, D 1356, E 131,
responsibility of the user of this standard to establish appro-
and Practices D 4691, E 275, and IEEE/ASTM SI 10.
priate safety and health practices and determine the applica-
3.1.1 method detection limit, MDL—the minimum concen-
bility of regulatory limitations prior to use. Specific warning
tration of an analyte that can be reported with 99 % confidence
statements are given in 8.3, 8.7, 12.1.8, and Section 9.
that the value is above zero based on a standard deviation of
2. Referenced Documents
greater than seven repetitive measurements of a solution
3
containing the analyte at a concentration near the low standard.
2.1 ASTM Standards:
Theanalyteconcentrationofthissolutionshouldnotbegreater
D 883 Terminology Relating to Plastics
than ten times the estimated MDL.
1
This test method is under the jurisdiction of ASTM Committee D22 on Air
4. Summary of Test Method
Quality and is the direct responsibility of Subcommittee D22.03 on Ambient
4.1 Asolutioncontainingthemetal(s)ofinterestisaspirated
Atmospheres and Source Emissions.
Current edition approved March 10, 2001. Published May 2001. Originally
as a fine mist into an air acetylene flame where it is converted
published as D 5086 – 90. Last previous edition D 5086 – 95.
to an atomic vapor consisting of ground state atoms. These
2
The boldface numbers in parentheses refer to a list of references at the end of
ground state atoms are capable of absorbing electromagnetic
this test method.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or radiation over a series of very narrow, sharply defined wave-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
lengths from a distinct line source of light, usually a hollow
Standards volume information, refer to the standard’s Document Summary page on
cathode lamp specific to the metal of interest, passed through
the ASTM website.
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D5086–01
TABLE 1 Interlaboratory Precision and Bias for Calcium, Magnesium, Potassium, and Sodium Determined from Analyte Spikes of
Synthetic Atmospheric Wet Deposition Samples
Amoun
...