Microplastics are of any kind of plastics with a particle size less than 5 mm and can be distinguished into primary and secondary microplastics. Primary microplastics particles have been produced with a size of less than 5 mm, whereas secondary microplastic particles are generated by degradation and fragmentation in the environment. Both categories accumulate and persist in the environment, especially in marine ecosystems. Microplastics have been found in various sea animals, which have eaten the microplastics mistaken to food. The intake of microplastics hinders the animals of consuming food resulting in less energy to carry out life functions. The accumulation in the human food chain cannot be excluded. The impact of microplastics to the human health is so far unknown but of great interest.
A possibility for the determination of microplastics is the performance of a solid-liquid extraction from the sample matrix prior to further analytical steps. Pressurized Solvent Extraction allows for extraction under elevated temperatures and pressures, offering more replicable results. Several publications are available regarding this topic.
Below are some examples of interesting publications using BUCHI’s Pressurized Solvent Extraction equipment for the extraction of microplastics from marine samples.
Extraction of microplastic from marine sediments: A comparison between pressurized solvent extraction and density separation
Distribution and characteristics of microplastics and phthalate esters from a freshwater lake system in Lesser Himalayas
Analysis of polychlorinated biphenyls adsorbed on plastic pellets: comparison of extraction techniques
Do you have a specific question regarding the extraction of microplastics from marine samples? We have specialists who will quickly and efficiently provide you with competent application support or a feasibility study specifically tailored to your needs. Get in contact with our team via application@buchi.com or participate in our advanced chromatography trainings and bring your sample, that we can find the right solution for your specific separation problem. Register for training | 
