ASTM D2914-01(2007)
Standard Test Methods for Sulfur Dioxide Content of the Atmosphere (West-Gaeke Method)

Standard No.

ASTM D2914-01(2007)

Release Date

2001

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D2914-15

Latest

ASTM D2914-15(2022)

Scope

Sulfur dioxide is a major air pollutant, commonly formed by the combustion of sulfur-bearing fuels. The Environmental Protection Agency (EPA) has set primary and secondary air quality standards (7) that are designed to protect the public health and welfare.

The Occupational Safety and Health Administration (OSHA) has promulgated exposure limits for sulfur dioxide in workplace atmospheres (8).

These methods have been found satisfactory for measuring sulfur dioxide in ambient and workplace atmospheres over the ranges pertinent in 5.1 and 5.2.

Method A has been designed to correspond to the EPA-Designated Reference Method (7) for the determination of sulfur dioxide.

1.1 These test methods cover the bubbler collection and colorimetric determination of sulfur dioxide (SO2) in the ambient or workplace atmosphere.

1.2 These test methods are applicable for determining SO2 over the range from approximately 25 g/m³ (0.01 ppm(v)) to 1000 956;g/m ³ (0.4 ppm(v)), corresponding to a solution concentration of 0.03 g SO2/mL to 1.3 g SO2/mL. Beer's law is followed through the working analytical range from 0.02 g SO2/mL to 1.4 g SO2/mL.

1.3 The lower limit of detection is 0.075 g SO2/mL(1), representing an air concentration of 25 g SO2/m³ (0.01 ppm(v)) in a 30-min sample, or 13 g SO2/m³ (0.005 ppm(v)) in a 24-h sample.

1.4 These test methods incorporate sampling for periods between 30 min and 24 h.

1.5 These test methods describe the determination of the collected (impinged) samples. A Method A and a Method B are described.

1.6 Method A is preferred over Method B, as it gives the higher sensitivity, but it has a higher blank. Manual Method B is pH-dependent, but is more suitable with spectrometers having a spectral band width greater than 20 nm. Note 1These test methods are applicable at concentrations below 25 g/m ³ by sampling larger volumes of air if the absorption efficiency of the particular system is first determined, as described in Annex A4.

<>Note 2

Concentrations higher than 1000 g/m ³ can be determined by using smaller gas volumes, larger collection volumes, or by suitable dilution of the collected sample with absorbing solution prior to analysis.

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. For specific precautionary statements, see 8.3.1, Section 9, and A3.11.

ASTM D2914-01(2007) Referenced Document

• ASTM D1071 Standard Test Methods for Volumetric Measurement of Gaseous Fuel Samples
• ASTM D1193 Standard Specification for Reagent Water
• ASTM D1356 Standard Terminology Relating to Sampling and Analysis of Atmospheres*， 2024-04-19 Update
• ASTM D1357 Standard Practice for Planning the Sampling of the Ambient Atmosphere
• ASTM D1605 
• ASTM D1914 Standard Practice for Conversion Units and Factors Relating to Sampling and Analysis of Atmospheres
• ASTM D3195 Standard Practice for Rotameter Calibration
• ASTM D3609 Standard Practice for Calibration Techniques Using Permeation Tubes
• ASTM D3631 Standard Test Methods for Measuring Surface Atmospheric Pressure
• ASTM E1 Standard Specification for ASTM Thermometers
• ASTM E275 Standard Practice for Describing and Measuring Performance of Ultraviolet, Visible, and Near-Infrared Spectrophotometers

ASTM D2914-01(2007) history

• 2022 ASTM D2914-15(2022) Standard Test Methods for Sulfur Dioxide Content of the Atmosphere (West-Gaeke Method)
• 2015 ASTM D2914-15 Standard Test Methods for Sulfur Dioxide Content of the Atmosphere (West-Gaeke Method)
• 2001 ASTM D2914-01(2007) Standard Test Methods for Sulfur Dioxide Content of the Atmosphere (West-Gaeke Method)
• 2001 ASTM D2914-01 Standard Test Methods for Sulfur Dioxide Content of the Atmosphere (West-Gaeke Method)
• 1995 ASTM D2914-95 Standard Test Methods for Sulfur Dioxide Content of the Atmosphere (West-Gaeke Method)