Ehdotuksen tiedot

This document provides the key principles for the analysis of microplastics in drinking water and water with low content of natural suspended solids using thermo-analytical methods. This document covers the determination of polymer types and the mass of microplastics in the sample. This document is not applicable for the determination of particle size, particle shape and particle numbers. This document is applicable for the detection of microplastics in drinking water and waters with low content of natural total suspended solids (TSS)11ISO 6107 or ISO 5667-27 (1 mg/l to 100 mg/l) or lower if they interfere with determination.. The described detection procedures are suitable for various types of samples. NOTE In cases where this document is used for the detection of microplastics in water with TSS contents higher than those defined here, laboratories commonly include additional quality assessment and control measures (including preparation) to evaluate whether the detection methods perform adequately for increased amounts of TSS. This document describes the detection of different types of polymers, [the most used ones in the industry and the most abundant ones in the environment being polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) and polystyrene (PS), which are analysed by thermo-analytical methods]. Depending on the used thermo-analytic methods, additional further polymer can be detected, such as polyvinylchloride (PVC), polycarbonate (PC), poly-methylmethacrylate (PMMA) polyamides (PA), polyurethanes (PU), as well as signals from PS-co-polymers22 PS-co-polymers are polymers of styrene, acrylonitrile and butadiene (such as ABS). Signals from PS-co-polymers can be derivate from tire wear (including SBR) and can be detect with the methods as well, but elastomers are outside the scope of this document..