• Soil and Biosolid Analysis

Measurement and Testing

Soil and Biosolid Analysis

Nov 01 2023

ASTM International’s waste management committee (D34) has approved a new standard to analyze soils and biosolids for potential contamination from per- and polyfluoroalkyl substances (PFAS).
“PFAS contamination is of growing concern around the world,” says ASTM member William Lipps, general manager, government and regulatory business development/international standards development, Shimadzu Scientific Instruments. “ASTM’s water committee (D19) has developed two methods for PFAS in water (D7979 and D8421), but there is a need for PFAS methods in solid matrices.”
According to Lipps, municipalities have been applying biosolids to soil surfaces at various sites for years, including agricultural land, forests, mine reclamation areas, parks, and golf courses.
“Unfortunately, it may be possible that these biosolid materials contained PFAS,” says Lipps. “This new standard is a rapid, cost-effective method with known precision and accuracy that can be used by laboratories to assess PFAS contamination in these types of samples.”
According to Lipps, the test method is designed to minimize materials required for extraction, including plastic products, SPE media, and solvent usage.
Lipps notes that the standard (D8535) has been approved with a single lab study that included four soil matrices, and four biosolid matrices, each analyzed in triplicate at three different concentrations. Committee D34 plans to conduct an interlaboratory study for D8535. Interested laboratories are invited to participate.

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