ASTM D5085-02

Standard Test Method for Determination of Chloride, Nitrate, and Sulfate in Atmospheric Wet Deposition by Chemically Suppressed Ion Chromatography

SIGNIFICANCE AND USE
This test method is useful for the determination of the anions: chloride, nitrate, and sulfate in atmospheric wet deposition.
Fig. X1.1 in the appendix represents cumulative frequency percentile concentration plots of chloride, nitrate, and sulfate obtained from analyses of over 5000 wet deposition samples. These data may be used as an aid in the selection of appropriate calibration solutions. (3)
SCOPE
1.1 This test method is applicable to the determination of chloride, nitrate, and sulfate in atmospheric wet deposition (rain, snow, sleet, and hail) by chemically suppressed ion chromatography  (1). For additional applications refer to Test Method D 4327.
1.2 The concentration ranges for this test method are listed below. The range tested was confirmed using the interlaboratory collaborative test (see Table 1 for statistical summary of the collaborative test).MDL (mg/L) (2)Range of Method (mg/L)RangeTested (mg/L)Chloride0.030.09-2.00.15-1.36 Nitrate0.03 0.09-5.0 0.15-4.92 Sulfate 0.03 0.09-8.0 0.15-6.52
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. The precision and bias data presented are insufficient to justify use at this low level, however, many workers have found that this test method is reliable at lower levels than those that were tested.
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 precautionary statements are given in Section 9.

General Information

• Status: Historical
• Publication Date: 09-Oct-2002
• ICS: 07.060 - Geology. Meteorology. Hydrology
• ICS: 71.040.40 - Chemical analysis
• Technical Committee: D22 - Air Quality
• Drafting Committee: D22.03 - Ambient Atmospheres and Source Emissions

Relations

• Replaces: ASTM D5085-95 - Standard Test Method for Determination of Chloride, Nitrate, and Sulfate in Atmospheric Wet Deposition by Chemically Suppressed Ion Chromatography
• Effective Date: 10-Oct-2002
• Replaced By: ASTM D5085-02(2008) - Standard Test Method for Determination of Chloride, Nitrate, and Sulfate in Atmospheric Wet Deposition by Chemically Suppressed Ion Chromatography
• Effective Date: 01-Aug-2008
• Referred By: ASTM D8149-20 - Standard Practice for Optimization, Calibration, and Validation of Ion Chromatographic Determination of Heteroatoms and Anions in Petroleum Products and Lubricants
• Effective Date: 10-Oct-2002
• Referred By: ASTM D6328-18 - Standard Guide for Quality Assurance Protocols for Chemical Analysis of Atmospheric Wet Deposition
• Effective Date: 10-Oct-2002

Standards Content (Sample)

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:D5085–02
Standard Test Method for
Determination of Chloride, Nitrate, and Sulfate in
Atmospheric Wet Deposition by Chemically Suppressed Ion
1
Chromatography
This standard is issued under the fixed designation D5085; 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.
1. Scope D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
1.1 This test method is applicable to the determination of
D1356 Terminology Relating to Sampling andAnalysis of
chloride, nitrate, and sulfate in atmospheric wet deposition
Atmospheres
(rain, snow, sleet, and hail) by chemically suppressed ion
2
D2777 Practice for Determination of Precision and Bias of
chromatography (1) . For additional applications refer to Test
Applicable Methods of Committee D19 on Water
Method D4327.
D3670 Guide for Determination of Precision and Bias of
1.2 The concentration ranges for this test method are listed
Methods of Committee D-22
below. The range tested was confirmed using the interlabora-
D4210 Practice for Interlaboratory Quality Control Proce-
tory collaborative test (see Table 1 for statistical summary of
dures and a Discussion on Reporting Low-Level Data
the collaborative test).
D4327 Test Method for Anions in Water by Chemically
Range of Range
Suppressed Ion Chromatography
Method Tested
MDL (mg/L) (2) (mg/L) (mg/L)
D5012 Guide for Preparation of Materials Used for the
Chloride 0.03 0.09–2.0 0.15–1.36
Collection and Preservation of Atmospheric Wet Deposi-
Nitrate 0.03 0.09–5.0 0.15–4.92
tion
Sulfate 0.03 0.09–8.0 0.15–6.52
E380 Practice for Use of the International System of Units
1.3 The method detection limit (MDL) is based on single
(SI) (the Modernized Metric System)
operator precision (2) and may be higher or lower for other
E694 Specification for Laboratory Glass VolumetricAppa-
operators and laboratories. The precision and bias data pre-
ratus
sented are insufficient to justify use at this low level, however,
many workers have found that this test method is reliable at
3. Terminology
lower levels than those that were tested.
3.1 Definitions—For definitions of terms used in this test
1.4 This standard does not purport to address all of the
method,refertoTerminologiesD883,D1129,andD1356and
safety concerns, if any, associated with its use. It is the
Test Method D4327 and Practice E380.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Summary of Test Method
bility of regulatory limitations prior to use. Specific precau-
4.1 Ionchromatographycombinesconductometricdetection
tionary statements are given in Section 9.
with the separation capabilities of ion exchange resins. (1) A
filtered aliquot of the sample, ranging in size from 50 to 250
2. Referenced Documents
µL, is pumped through an ion exchange column where the
3
2.1 ASTM Standards:
anions of interest are separated. Each ion’s affinity for the
D883 Terminology Relating to Plastics
exchange sites, known as its selectivity quotient, is largely
determined by its radius and valence. Because different ions
1
have different selectivity quotients, the sample ions elute from
This test method is under the jurisdiction of ASTM Committee D22 on Air
Quality and is the direct responsibility of Subcommittee D22.03 on Ambient
the column as discrete bands. Each ion is identified by its
Atmospheres and Source Emissions.
retention time within the exchange column. The sample ions
Current edition approved October 10, 2002. Published December 2002. Origi-
are selectively eluted off the separator column and onto a
nally published as D5085–90. Last previous edition D5085–95.
2
suppressorcolumn,wheretheconductivityoftheeluentionsis
The boldface numbers in parentheses refer to references at the end of this test
method.
reducedandthesampleionsareconvertedtotheircorrespond-
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
ing strong acids. The separated anions are detected by a
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
conductance cell. The chromatograms produced are displayed
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. on a strip chart recorder or other data acquisition device.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5085–02
TABLE 1 Precision and Bias for Chloride, Nitrate, and Sulfate Determined from the Synthetic Atmospheric Wet Deposition Samples
Used in the Int
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