TOP analysis
Total oxidisable precursor (TOP) analysis detects hidden PFAS contamination by oxidising precursors into measurable PFCAs and comparing levels before and after digestion to reveal otherwise undetectable compounds.
PFAS
Leading the industry in PFAS analysis
We have the experience, resources, and technological innovations to address the environmental analytical challenges of PFAS.
Per- and polyfluoroalkyl substances (PFAS), including well-known compounds like PFOA and PFOS, are often referred to as “forever chemicals” due to their resistance to natural degradation in both the environment and the human body.
These substances are widely used in products designed to resist heat, stains, oil, and water. Common sources include firefighting foams such as aqueous film-forming foam (AFFF), as well as consumer goods like food packaging, textiles, cosmetics, non-stick cookware, and cleaning agents.
Accurate and reliable PFAS analyses tailored to your needs
Eurofins Environment Testing New Zealand recognises the critical importance of identifying and monitoring emerging contaminants such as PFAS. Our laboratories offer high-quality, cost-effective solutions tailored to specific PFAS testing requirements.
Our commitment to quality goes beyond providing error-free and defensible data. Industry-leading programmes integrate the technical guidance and expertise of PFAS specialists to fully understand analytical needs, achieve data quality objectives, and keep abreast of evolving regulations.
We employ precise and accurate methods, combined with unparalleled expertise, to support PFAS analysis across a diverse range of matrices.
Individual PFAS compound analysis
With total oxidisable precursor (TOP), PFAS precursor substances in eluates and waters can be quantified. The method is based on individual compound analysis. Selected compounds are measured before and after oxidative digestion. The digestion converts some of the PFAS that are not directly measurable into detectable perfluorocarboxylic acids (PFCAs). The ratio of measurable individual substances before and after digestion allows conclusions to be drawn about the PFAS contamination with precursor bonds.
AOF analysis
Adsorbable organic fluorine (AOF) complements PFAS analysis by measuring total organic fluorine, including otherwise undetectable compounds, helping identify hidden PFAS like short-chain PFAS and PAPs in water and products such as coated paper.
As an important complement to established PFAS analysis, the sum parameter adsorbable organic fluorine (AOF) is determined. Many organic fluorine compounds cannot be detected individually using standard methods. In such cases, a sum parameter like AOF, which can analytically capture nearly all organic fluorine compounds, is very helpful. It allows for the detection of contamination in water samples from previously unidentified organic fluorine compounds or degradation products (metabolites) such as short-chain PFAS (sc-PFAS) and polyfluoroalkyl phosphates (PAP). To fully assess the extent of PFAS contamination, especially at hotspots, it is essential to identify these compounds as well. Besides environmental analysis, AOF is also used in product testing, for example, to examine coated paper for the presence of PFAS.
TOF analysis
Total organic fluorine (TOF) is used to analyse organic fluorine in materials like paper-based packaging and consumer goods.
The sum parameter total organic fluorine (TOF) is well suited for the analysis of materials and products, especially those made from paper and pulp, such as packaging, hygiene products, and disposable tableware.
EOF analysis
EOF extractable organic Fluorine (EOF) measures organofluorine compounds in soils, compost, and sludge as a PFAS indicator.
The sum parameter extractable organic fluorine (EOF) can be used to determine organofluorine compounds in soils, compost, and sewage sludge, serving as an indicator for PFAS. Eurofins Environment Testing is actively involved in the development of a new analytical standard for EOF. After extraction with organic solvents and subsequent combustion in an oxygen stream, fluoride is measured using ion chromatography.
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