ASTM D7363 Perfluorinated Compounds PFAS Test in Soil
The ASTM D7363 standard provides a methodology for the extraction and determination of perfluorooctanoic acid (PFOA) and perfluorohexanoic acid (PFHxS), which are part of the broader group of per- and poly-fluoroalkyl substances (PFAS). These compounds have been widely used in various industrial applications, including firefighting foams, non-stick coatings, and stain repellents. However, their environmental persistence and potential toxicity have raised concerns about their presence in soil.
The ASTM D7363 method employs a combination of solid-phase extraction (SPE) followed by high-performance liquid chromatography with tandem mass spectrometry (HPLC-MS/MS). This approach ensures the accurate quantification of PFAS compounds even at very low concentrations. The test is particularly relevant for environmental quality managers, compliance officers, and R&D engineers who need to assess soil contamination levels in areas affected by industrial activities or previous firefighting operations.
The testing process begins with sampling the soil at predetermined locations based on known or suspected contamination patterns. Once collected, the samples are transported back to our laboratory where they undergo rigorous preparation steps. These include sieving the soil to a specified particle size range and ensuring homogeneity of the sample. The extraction is then performed using an appropriate solvent system recommended by ASTM D7363.
The extracted solution containing potential PFAS compounds is concentrated, diluted if necessary, and subsequently injected into the HPLC-MS/MS instrument for analysis. This sophisticated instrumentation allows for precise measurement of both target analytes within the sample matrix. After completion of the analytical run, results are interpreted according to established thresholds set forth by regulatory bodies.
Compliance with ASTM D7363 ensures accurate and reliable data that can be used towards addressing environmental remediation efforts or demonstrating adherence to international standards governing hazardous waste management practices. Understanding these nuances is crucial for those involved in developing strategies aimed at reducing exposure risks associated with PFAS contamination.
- Benefits: Ensures compliance with industry best practices; provides robust data useful for decision-making processes related to environmental remediation projects; supports efforts aimed at minimizing public health hazards linked to PFAS exposure;
- International Acceptance and Recognition: Widely accepted by regulatory agencies worldwide, including EPA (USA), Environment Canada, EU directives. It is considered a gold standard within the scientific community for assessing PFAS contamination levels in soils.
Applied Standards
The ASTM D7363 method aligns closely with broader international standards designed to address environmental concerns surrounding PFAS compounds. Specifically, it draws upon principles outlined in ISO 17025 for quality management systems in testing and calibration laboratories, which guarantees our laboratory adheres strictly to best practices when conducting analyses.
Additionally, this test is aligned with recommendations provided by the US Environmental Protection Agency (EPA) through its PFAS Strategic Roadmap. By following ASTM D7363 guidelines, we ensure that our findings contribute effectively towards ongoing initiatives aimed at mitigating risks posed by these persistent organic pollutants.
