ASTM D8193-18

Standard Test Method for Total Oil and Grease (TOG) and Total Petroleum Hydrocarbon (TPH) in Water and Wastewater with Solvent Extraction Using Non-Dispersive Mid-IR Transmission Spectroscopy

SIGNIFICANCE AND USE
5.1 The presence and concentration of total petroleum hydrocarbons, as well as total 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 total petroleum hydrocarbons as well as total oil and grease in water and wastewater.
SCOPE
1.1 This test method covers the determination of total oil and grease (TOG) that can be extracted from water or wastewater samples by cyclohexane and measured by non-dispersive IR spectroscopy from 1370–1380 cm-1. Treating the extract with Florisil2 to remove polar substances prior to the IR measurement enables determination of the total petroleum (TPH).  
1.2 This method also considers the volatile fraction of petroleum hydrocarbons which is lost by gravimetric methods that require solvent evaporation prior to weighing, as well as by solventless IR methods that require drying of the employed solid phase material prior to measurement. Similarly, a more complete fraction of extracted petroleum hydrocarbon is accessible by this method as compared to GC methods that use a time window for quantification, as petroleum hydrocarbons eluting outside these windows are also quantified.  
1.3 This method defines total oil and grease in water as material that can be extracted with cyclohexane and measured by IR absorption in the region of 1370–1380 cm-1 (7.25–7.3 µm). Similarly, total petroleum hydrocarbon in water is defined as material that can be extracted with cyclohexane, remains in the extract after filtration over Florisil and is measured by IR absorption in the region of 1370–1380 cm-1 (7.25–7.3 µm). The concentration of total grease is defined as the difference between the total oil and grease and total petroleum hydrocarbon concentrations.  
1.4 This method covers the range of 0.5 to 1000 mg/L for total oil and grease as well as for total petroleum hydrocarbons and has a method detection limit (MDL) of 0.5 mg/L. The range and method detection limit may be extended to higher or lower concentrations by adjusting the water or solvent volume used in the liquid-liquid extraction.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.6 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.  
1.7 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-Dec-2018
• 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: D8193 − 18
Standard Test Method for
Total Oil and Grease (TOG) and Total Petroleum
Hydrocarbon (TPH) in Water and Wastewater with Solvent
Extraction Using Non-Dispersive Mid-IR Transmission
1
Spectroscopy
This standard is issued under the fixed designation D8193; 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 lower concentrations by adjusting the water or solvent volume
used in the liquid-liquid extraction.
1.1 This test method covers the determination of total oil
1.5 The values stated in SI units are to be regarded as
and grease (TOG) that can be extracted from water or waste-
standard. No other units of measurement are included in this
watersamplesbycyclohexaneandmeasuredbynon-dispersive
-1
standard.
IR spectroscopy from 1370–1380 cm . Treating the extract
2
with Florisil to remove polar substances prior to the IR
1.6 This standard does not purport to address all of the
measurement enables determination of the total petroleum
safety concerns, if any, associated with its use. It is the
(TPH).
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
1.2 This method also considers the volatile fraction of
mine the applicability of regulatory limitations prior to use.
petroleum hydrocarbons which is lost by gravimetric methods
1.7 This international standard was developed in accor-
that require solvent evaporation prior to weighing, as well as
dance with internationally recognized principles on standard-
by solventless IR methods that require drying of the employed
ization established in the Decision on Principles for the
solid phase material prior to measurement. Similarly, a more
Development of International Standards, Guides and Recom-
complete fraction of extracted petroleum hydrocarbon is ac-
mendations issued by the World Trade Organization Technical
cessible by this method as compared to GC methods that use a
Barriers to Trade (TBT) Committee.
time window for quantification, as petroleum hydrocarbons
eluting outside these windows are also quantified.
2. Referenced Documents
1.3 This method defines total oil and grease in water as
3
2.1 ASTM Standards:
material that can be extracted with cyclohexane and measured
D1129 Terminology Relating to Water
-1
by IR absorption in the region of 1370–1380 cm (7.25–7.3
D1141 Practice for the Preparation of Substitute Ocean
µm). Similarly, total petroleum hydrocarbon in water is defined
Water
as material that can be extracted with cyclohexane, remains in
D1193 Specification for Reagent Water
the extract after filtration over Florisil and is measured by IR
D2777 Practice for Determination of Precision and Bias of
-1
absorptionintheregionof1370–1380cm (7.25–7.3µm).The
Applicable Test Methods of Committee D19 on Water
concentration of total grease is defined as the difference
D3370 Practices for Sampling Water from Closed Conduits
between the total oil and grease and total petroleum hydrocar-
D5847 Practice for Writing Quality Control Specifications
bon concentrations.
for Standard Test Methods for Water Analysis
1.4 This method covers the range of 0.5 to 1000 mg/L for D7678 Test Method for Total Oil and Grease (TOG) and
total oil and grease as well as for total petroleum hydrocarbons TotalPetroleumHydrocarbons(TPH)inWaterandWaste-
and has a method detection limit (MDL) of 0.5 mg/L. The water with Solvent Extraction using Mid-IR Laser Spec-
range and method detection limit may be extended to higher or troscopy
E168 Practices for General Techniques of Infrared Quanti-
tative Analysis
1
This test method is under the jurisdiction of ASTM Committee D19 on Water
andisthedirectresponsibilityofSubcommitteeD19.06onMethodsforAnalysisfor
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Organic Substances in Water. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 15, 2018. Published January 2019. DOI: 10.1520/ contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
D8193-18. Standards volume information, refer to the standard’s Document Summary page on
2
Florisil is a trademark by U.S. Silica Company, Frederick, MD. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8193 − 18
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2.2 ISO Standards: This test method contains procedures that can assist the analyst
ISO 9377
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