ASTM D7599 Determination of Ethanol Amines in Water by Liquid Chromatography
ASTM D7599 test method uses the techniques of liquid chromatography and single reaction monitoring mass spectrometry for the quantitative and qualitative determination of diethanolamine, triethanolamine, N-methyldiethanolamine, and N-methyl diethanolamine in surface water. The final results of this method are expressed in SI units.
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- Overview
- Scope, Applications, and Benefits
- Test Process
- Specifications
- Instrumentation
- Results and Deliverables
Overview
ASTM D7599 describes a standard test method for the determination of ethanolamines—monoethanolamine (MEA), diethanolamine (DEA), and triethanolamine (TEA)—in water samples by liquid chromatography (LC). Ethanolamines are widely used industrial chemicals that require monitoring in wastewater, process streams, and environmental samples.
Liquid chromatographic separation provides selective, sensitive detection of individual ethanolamine species in complex aqueous matrices, enabling both compliance monitoring and process control in industries that use or produce these chemicals.
Scope, Applications, and Benefits
Scope
ASTM D7599 covers the determination of:
- Monoethanolamine (MEA) in water
- Diethanolamine (DEA) in water
- Triethanolamine (TEA) in water
- Ethanolamine concentrations in industrial and environmental water samples
Applications
- Wastewater effluent monitoring at chemical manufacturing plants
- Gas treatment plant amine solution quality control
- Industrial cooling water ethanolamine monitoring
- Environmental compliance testing of aqueous effluents
- Process stream analysis in petroleum refining
Benefits
- Individual speciation of MEA, DEA, and TEA
- High selectivity in complex aqueous matrices
- Suitable for trace-level environmental monitoring
- Supports wastewater discharge compliance
- Reproducible results with validated LC methodology
Test Process
Sample Preparation
Filter the water sample through a 0.45 µm membrane; prepare calibration standards and QC samples in reagent-grade water.
1Chromatographic Separation
Inject the sample and separate MEA, DEA, and TEA using set LC conditions.
2Detection
Detect separated ethanolamine peaks using the appropriate detector
3Quantification
Identify peaks by retention time and calculate concentrations using calibration curves.
4Technical Specifications
| Parameter | Details |
|---|---|
| Standard | ASTM D7599 |
| Test Principle | Liquid chromatography separation and detection |
| Applicable Matrix | Water samples |
| Target Analytes | MEA, DEA, TEA |
| Detection Method | Refractive index, conductivity, or UV |
| Measured Output | Individual ethanolamine concentrations (mg/L) |
Instrumentation Used for Testing
- Liquid Chromatography (LC) system
- Analytical column
- Detector (UV or conductivity)
- Sample injector
- Filtration apparatus
- Calibration standards
- Data acquisition and analysis software
Results and Deliverables
- Individual concentrations of MEA, DEA, and TEA in mg/L
- Chromatograms with identified analyte peaks
- Calibration curve data and linearity assessment
- QC sample recoveries and detection limits
- Compliance assessment against discharge limits
- Process control data for amine treatment systems
Why Choose Infinita Lab for ASTM D7599?
Infinita Lab is a trusted USA-based testing laboratory offering ASTM D7599 testing services across an extensive network of accredited facilities across the USA.
Infinita Lab is built to serve the full spectrum of modern testing needs—across industries, materials, and methodologies. Our advanced equipment and expert professionals deliver highly accurate and prompt test results, helping businesses achieve quality compliance and product reliability.
Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you. Request a Quote
Frequently Asked Questions
Ethanolamines (MEA, DEA, TEA) are organic compounds widely used in gas treating, surfactants, cosmetics, and chemical manufacturing. They are moderately toxic to aquatic organisms and require monitoring in wastewater and environmental samples.
LC provides direct separation and quantification of individual ethanolamine species without derivatization steps required by some other methods. It handles the highly polar, water-soluble nature of ethanolamines effectively.
The method can achieve detection limits in the low mg/L to sub-mg/L range, sufficient for most industrial wastewater compliance monitoring requirements.
The method is designed for aqueous environmental and process water samples. High-concentration amine solutions such as gas treatment solvents require significant sample dilution before analysis using this method.
Other amines or organic compounds with similar chromatographic retention times may interfere. Sample preparation steps such as filtration and appropriate column and mobile phase selection minimize these effects.
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