EN ISO 27108:2013 PDF

Overview

EN ISO 27108:2013 (adoption of ISO 27108:2010 by CEN) defines a validated analytical method for determining selected plant treatment agents (pesticides) and biocide products in drinking water, ground water and surface water. The method uses solid‑phase microextraction (SPME) for sample enrichment followed by gas chromatography‑mass spectrometry (GC‑MS) for separation, identification and quantification. For most target compounds the method achieves a limit of determination of at least 0.05 µg/L, with interlaboratory validation demonstrated across 0.05–0.3 µg/L. Typical sample volumes are small (about 8–16 mL).

Key Topics and Requirements

• Principle: Extraction by SPME fibre (coated fused‑silica) followed by thermal desorption into a GC injector and detection by GC‑MS (electron impact ionisation).
• Target analytes: A number of pesticides and biocides are listed in the standard (examples include atrazine, simazine, lindane, triclosan, metolachlor, terbutylazine). The method may be applicable to other compounds if validated for them.
• Performance: Limit of determination dependent on matrix, compound and MS sensitivity; validated interlaboratory range 0.05–0.3 µg/L for many analytes.
• Sampling & sample prep: Follow ISO sampling guidance; small-volume samples; sample handling and preservation referenced to ISO 5667 series.
• Interferences & quality control:
  • SPME fibre batch variability and conditioning can affect extraction yield-precondition new fibres and condition used fibres before sequences.
  • Sensitivity of fibres may decline during sequences-regular reference solution checks recommended.
  • Salt addition (near saturation) usually improves extraction for many compounds (verify per compound).
• Normative references: ISO 3696 (water for analytical use), ISO 5667-1 and ISO 5667-3 (sampling guidance).

Applications

• Routine and confirmatory monitoring of pesticides and biocides in environmental and drinking water monitoring programmes.
• Use by environmental testing laboratories, water utilities, regulatory agencies, and contract analytical services for compliance testing, contamination incident follow-up and trend monitoring.
• Applicable in research settings for method development and small‑volume sample analysis where rapid SPME sample preparation and GC‑MS sensitivity are advantageous.

Related Standards (if applicable)

• ISO 27108:2010 - original international text adopted as EN ISO 27108:2013.
• ISO 5667-1 / ISO 5667-3 - guidance on sampling design, preservation and handling.
• ISO 3696 - specification for laboratory water quality.

Keywords: EN ISO 27108:2013, water quality, SPME, GC‑MS, pesticides, biocides, drinking water monitoring, limit of determination, sample preparation.