ASTM D8478-23

Standard Test Method for N-Hexane Recoverable Total Oil and Grease and Total Petroleum Hydrocarbons in Water by ATR-Infrared Determination

SIGNIFICANCE AND USE
5.1 The presence and concentration of oil and grease in domestic and industrial wastewater is of concern to the public because of its deleterious aesthetic effect and its impact on aquatic life.  
5.2 Regulations and standards have been established that require monitoring of TOG and TPH in produced water and wastewater.
SCOPE
1.1 This test method covers the determination of total oil and grease, and total petroleum hydrocarbons in produced water and wastewater by an infrared (IR) determination of n-hexane extractable substances from the sample. Included in this estimation of total oil and grease are any other compounds soluble in the n-hexane.  
1.2 This test method defines total oil and grease in produced water and wastewater as that which is extractable in the test method and measured by IR absorption from 3.34 µm to 3.54 µm (2825 cm-1 to 2994 cm-1). Similarly, this test method defines total petroleum hydrocarbons in produced water and wastewater as that oil and grease which is not adsorbed by silica gel in the test method, and is measured by IR absorption from 3.34 µm to 3.54 µm (2825 cm-1 to 2994 cm-1). Alternative methods for total oil and grease or total petroleum hydrocarbons, or both, can produce differing results.  
1.3 This method covers the range of 5 mg/L to 175 mg/L for total oil and grease and the range of 5 mg/L to 50 mg/L for total petroleum hydrocarbons. The range may be extended to a lower or higher level by extraction of a larger or smaller sample volume collected separately.  
1.4 This test method uses horizontal attenuated total reflectance (HATR) with a cubic zirconia crystal.  
1.5 This test method is intended as a field test only and should be treated as such. This method is not intended to replace laboratory-based regulatory methods currently in use.  
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See Guide D3856 for more information.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 14-Apr-2023
• ICS: 13.060.50 - Examination of water for chemical substances
• Technical Committee: D19 - Water
• Drafting Committee: D19.06 - Methods for Analysis for Organic Substances in Water

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D8478 − 23
Standard Test Method for
N-Hexane Recoverable Total Oil and Grease and Total
Petroleum Hydrocarbons in Water by ATR-Infrared
1
Determination
This standard is issued under the fixed designation D8478; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.7 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers the determination of total oil
responsibility of the user of this standard to establish appro-
and grease, and total petroleum hydrocarbons in produced
priate safety, health, and environmental practices and deter-
water and wastewater by an infrared (IR) determination of
mine the applicability of regulatory limitations prior to use.
n-hexane extractable substances from the sample. Included in
See Guide D3856 for more information.
this estimation of total oil and grease are any other compounds
1.8 This international standard was developed in accor-
soluble in the n-hexane.
dance with internationally recognized principles on standard-
1.2 This test method defines total oil and grease in produced
ization established in the Decision on Principles for the
water and wastewater as that which is extractable in the test
Development of International Standards, Guides and Recom-
method and measured by IR absorption from 3.34 μm to
mendations issued by the World Trade Organization Technical
-1 -1
3.54 μm (2825 cm to 2994 cm ). Similarly, this test method
Barriers to Trade (TBT) Committee.
defines total petroleum hydrocarbons in produced water and
wastewater as that oil and grease which is not adsorbed by
2. Referenced Documents
silica gel in the test method, and is measured by IR absorption
2
-1 -1
2.1 ASTM Standards:
from 3.34 μm to 3.54 μm (2825 cm to 2994 cm ). Alternative
D1129 Terminology Relating to Water
methods for total oil and grease or total petroleum
D1193 Specification for Reagent Water
hydrocarbons, or both, can produce differing results.
D2777 Practice for Determination of Precision and Bias of
1.3 This method covers the range of 5 mg/L to 175 mg/L for
Applicable Test Methods of Committee D19 on Water
total oil and grease and the range of 5 mg/L to 50 mg/L for total
D3370 Practices for Sampling Water from Flowing Process
petroleum hydrocarbons. The range may be extended to a
Streams
lower or higher level by extraction of a larger or smaller
D3856 Guide for Management Systems in Laboratories
sample volume collected separately.
Engaged in Analysis of Water
D5847 Practice for Writing Quality Control Specifications
1.4 This test method uses horizontal attenuated total reflec-
for Standard Test Methods for Water Analysis
tance (HATR) with a cubic zirconia crystal.
E168 Practices for General Techniques of Infrared Quanti-
1.5 This test method is intended as a field test only and
tative Analysis
should be treated as such. This method is not intended to
3
2.2 CFR Publications:
replace laboratory-based regulatory methods currently in use.
40 CFR Part 136 Guidelines Establishing Test Procedures
1.6 The values stated in SI units are to be regarded as
for the Analysis of Pollutants
standard. No other units of measurement are included in this
49 CFR Part 172 Hazardous Materials Table, Special
standard.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This test method is under the jurisdiction of ASTM Committee D19 on Water contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
and is the direct responsibility of Subcommittee D19.06 on Methods for Analysis for Standards volume information, refer to the standard’s Document Summary page on
Organic Substances in Water. the ASTM website.
3
Current edition approved April 15, 2023. Published May 2023. DOI: 10.1520/ Available from U.S. Government Publishing Office (GPO), 732 N. Capitol St.,
D8478-23. NW, Washington, DC 20401, http://www.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8478 − 23
Provisions, Hazardous Materials Communications, Emer- 6. Interferences
gency Response Information, Training Requirements, and
6.1 Soaps, detergents, surfactants, and other materials can
Security Plans
form emulsions that can reduce the amount of oil and grease
4
2.3 EPA Standards:
extracted from a sample. This test method contain
...