Abstract
Microplastics (MPs) have become an important global issue in recent years. However, MPs in the soil have received far less attention than water. Effective and nondestructive extraction of MPs is important for studying MPs in agricultural soils. This study uses different floatation solutions as experiments and uses MgCl2 as the floatation solution of the density extraction method. Five types of standard MPs (PE, PP, PS, PVC, and PET) are used as the objects of this experiment. The recovery of the two particle sizes was between 90.82% and 109.69%. The extracted standard MPs were then subjected to IR and Raman spectroscopic analysis, and the results showed that Raman spectroscopy was more suitable for the identification of the extracted MPs. Finally, this method collected and verified a vast number of soil samples and further analyzed the abundance and characteristics of the collected MPs.
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Acknowledgements
The authors are very grateful for grants from the Zhejiang Provincial Natural Science Foundation of China (No. LY20B070011), the Chinese & Poland Inter Governmental Science and Technology Cooperation Project (No. [2018]19), and the Science and Technology Program of Zhejiang Food and Drug Administration, China (No. 2021002).
Funding
Zhejiang Provincial Natural Science Foundation of China, LY20B070011, Chinese & Poland Inter Governmental Science and Technology Cooperation Project, [2018]19, Science and Technology Program of Zhejiang Province, 2021002.
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Liu, Y., Lin, Y., Xie, J. et al. A Method to Replace NaCl as a Flotation Solution for Extracting MPs in Soil: A Case Study of the Jiaxing Agricultural Soil from China. Bull Environ Contam Toxicol 110, 96 (2023). https://doi.org/10.1007/s00128-023-03726-4
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DOI: https://doi.org/10.1007/s00128-023-03726-4