ASTM D7678
Standard Test Method for Total Oil and Grease (TOG) and Total Petroleum Hydrocarbons (TPH) in Water and Wastewater with Solvent Extraction using Mid-IR Laser Spectroscopy
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About This Item
ASTM D7678 is the ASTM standard for determining total oil and grease (TOG) and total petroleum hydrocarbons (TPH) in water and wastewater using solvent extraction and mid-IR laser spectroscopy. It provides a technical framework for measuring hydrocarbon-related contamination in liquid samples, helping laboratories and operators support monitoring, comparison, and reporting needs. By combining extraction with instrumental analysis, the standard is relevant where consistent measurement of oil and grease levels matters for compliance, quality control, and environmental assessment.
Overview of ASTM D7678
ASTM D7678 describes a test method for analyzing water and wastewater samples for TOG and TPH after solvent extraction, followed by mid-IR laser spectroscopy. Its purpose is to support repeatable measurement of oil-like constituents in aqueous matrices using a defined laboratory approach. As a result, the standard is useful for organizations that need a recognized method for evaluating contamination, verifying treatment performance, or comparing results across test programs. The title indicates a focus on analytical determination rather than material specification.
Common use cases of ASTM D7678
This standard is commonly used in laboratory testing workflows for water and wastewater samples where oil and grease or petroleum hydrocarbon content must be measured. It may support environmental monitoring, treatment plant oversight, and routine quality checks tied to liquid discharge or process water evaluation. ASTM D7678 is also relevant when organizations need a documented test method for sample analysis that can be applied consistently across different testing programs and reporting requirements.
Benefits of using ASTM D7678
Using ASTM D7678 can help promote consistency in how TOG and TPH are measured, which is important when test results are used for compliance, internal review, or procurement decisions. The standardized method helps reduce ambiguity around analytical approach and supports more reliable comparison between laboratories or sampling events. For technical teams, this can improve confidence in water and wastewater testing data and help lower the risk of misinterpretation when tracking hydrocarbon-related contamination.
- Solvent extraction-based measurement approach
- Mid-IR laser spectroscopy analysis
- Targets TOG and TPH in water and wastewater
- Supports repeatable laboratory testing
- Useful for monitoring and reporting workflows
- Publication Date: 2022-10-25
- Publisher: ASTM
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