ASTM D8478-23 PDF
Standard Test Method for N-Hexane Recoverable Total Oil and Grease and Total Petroleum Hydrocarbons in Water by ATR-Infrared Determination
Standard Test Method for N-Hexane Recoverable Total Oil and Grease and Total Petroleum Hydrocarbons in Water by ATR-Infrared Determination
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 12
- Дата публикации:
- 15 апреля 2023 г.
- Издание:
- D8478
- ICS:
- 13.060.50
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.
Abstract
Overview
ASTM D8478-23 is a standard test method developed by ASTM International for the reliable determination of N-hexane recoverable total oil and grease (TOG) as well as total petroleum hydrocarbons (TPH) in produced water and wastewater. Using Attenuated Total Reflectance Infrared (ATR-IR) spectroscopy, the standard enables rapid field-based quantification of extractable organic material, supporting environmental monitoring and regulatory compliance for domestic, industrial, and oil production wastewater streams.
This test method is especially valuable for its ability to provide field-based analysis, guiding timely decisions regarding wastewater treatment and discharge-but it does not replace comprehensive laboratory-based regulatory testing.
Key Topics
- Test Scope: Covers the analysis of total oil and grease, and total petroleum hydrocarbons in water samples via IR measurement of n-hexane extractables.
- Measurement Range: Applicable for TOG from 5 mg/L to 175 mg/L, and TPH from 5 mg/L to 50 mg/L, with flexibility for lower or higher concentrations through sample volume adjustments.
- ATR-IR Technology: Utilizes horizontal attenuated total reflectance (HATR) with a cubic zirconia crystal to measure extract absorption in the IR range 3.34 μm to 3.54 μm (2825 cm⁻¹ to 2994 cm⁻¹).
- Sample Types: Suitable for both produced water (from oil and gas operations) and general domestic or industrial wastewater.
- Extraction Specificity: Not only targets oil and grease but also any n-hexane soluble compounds; employs silica gel treatment to distinguish non-polar TPH fractions.
- Field Use: Designed for field analysis with clear guidelines on calibration, quality control, and matrix interferences.
- Regulatory Context: Supports monitoring to comply with environmental regulations requiring the measurement of oil, grease, and petroleum hydrocarbons in water.
Applications
Implementing ASTM D8478-23 provides several practical benefits for industries and environmental authorities:
- Wastewater Monitoring: Enables on-site assessment of oil and grease contamination in effluent streams from industrial, municipal, and oil & gas operations.
- Environmental Compliance: Assists facilities in meeting established regulatory limits for TOG and TPH before environmental discharge, protecting aquatic life and public aesthetics.
- Process Control: Delivers immediate feedback for operators adjusting treatment processes or managing accidental hydrocarbon releases.
- Site Assessments and Spill Response: Facilitates initial screening in environmental impact evaluations, including oil spill or contamination events, where rapid results are critical.
- Cost Effectiveness: Reduces laboratory turnaround times and transport costs for preliminary screening, allowing for targeted laboratory confirmation when needed.
- Data Consistency: Adheres to a recognized international framework for data comparability and repeatability, essential for standardized reporting and audits.
Related Standards
ASTM D8478-23 aligns with and complements a range of international and national standards for water analysis and environmental protection, including:
- ASTM D3856 - Guide for Management Systems in Laboratories Engaged in Analysis of Water
- ASTM D1129/D1193/D2777/D3370/D5847 - Terminology, water specifications, and practices for sampling and quality control in water analysis
- EPA Method 1664, Revision A - Standard for n-hexane extractable material (oil and grease) analysis by gravimetry
- 40 CFR Part 136 - US EPA guidelines for test procedures related to pollutant analysis in water
- 49 CFR Part 172 - US Department of Transportation standards related to hazardous material handling in sampling and analysis
- ASTM E168 - Practices for general techniques of infrared quantitative analysis
Keywords: ASTM D8478-23, total oil and grease, TOG, total petroleum hydrocarbons, TPH, ATR-IR, infrared spectroscopy, n-hexane extraction, wastewater analysis, environmental compliance, field test, oil in water, industrial water quality, water monitoring, standard test method, petroleum hydrocarbons, produced water, silica gel, cubic zirconia crystal.
Технические детали
- Технический комитет
- D19 - Water
- SKU
- ASTM D8478-23
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