Four solutions (water, sodium chloride, sodium hexametaphosphate, and sodium bromide) of different densities were applied followed by oxidizing digestion. The technique emerged from a comparative study using different salt solutions to isolate conventional, and for the first time biodegradable, microplastics from different solid sample matrices, i.e., sand, artificial soil, and compost. Thus, this study provides an easy to apply approach for density separation. This is based on the isolation of microplastics out of the solid sample matrices prior to instrumental detection. ![]() For a global environmental risk assessment, reliable and easy to apply analytical methods are mandatory to obtain comparable data. Fate and behavior, as well as ecotoxicity, are of increasing environmental concern, particularly in sediments and soils as natural sinks. ![]() ![]() Microplastics are the new emerging pollutants ubiquitously detectable in aquatic and terrestrial ecosystems.
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