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ASTM D5086-01

Historical Revision

Standard Test Method for Determination of Calcium, Magnesium, Potassium, and Sodium in Atmospheric Wet Deposition by Flame Atomic Absorption Spectrophotometry

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1.1 This test method is applicable to the determination of calcium, magnesium, potassium, and sodium in atmospheric wet deposition (rain, snow, sleet, and hail) by flame atomic absorption spectrophotometry (FAAS). (1)

1.2 The concentration ranges are listed below. The range tested was confirmed using the interlaboratory collaborative test (see for a statistical summary of the collaborative test).

MDL (mg/L)(2)Range of Method (mg/L)Range Tested (mg/L)
Calcium 0.0090.03-3.000.168-2.939
Magnesium0.0030.01-1.00 0.039-0.682
Potassium0.0030.01-1.00 0.029-0.499
Sodium 0.0030.01-2.000.105-1.84

1.3 The method detection limit (MDL) is based on single operator precision (2) and may be higher or lower for other operators and laboratories. Many workers have found that this test method is reliable at lower levels than were tested, but the precision and bias data presented are insufficient to justify their use at lower levels.

1.4 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. Specific warning statements are given in 8.3, 8.7, 12.1.8, and Section 9.


This test method may be used for the determination of calcium, magnesium, potassium, and sodium in atmospheric wet deposition samples.

Emphasis is placed on the easily contaminated quality of atmospheric wet deposition samples due to the low concentration levels of dissolved metals commonly present.

Annex A1 represents cumulative frequency percentile concentration plots of calcium, magnesium, potassium, and sodium obtained from analyses of over five thousand wet deposition samples. These data may be used as an aid in the selection of appropriate calibration standard concentrations. (3)

SDO ASTM: ASTM International
Document Number D5086
Publication Date March 10, 2001
Language en - English
Page Count 8
Revision Level 01
Supercedes
Committee D22.03
Publish Date Document Id Type View
March 15, 2020 D5086-20 Revision
March 10, 2001 D5086-95 Revision
March 10, 2001 D5086-01 Revision
Oct. 1, 2013 D5086-01R13 Reaffirmation
April 1, 2008 D5086-01R08 Reaffirmation