Sodium hypochlorite as an oxidizing agent for removal of soil organic matter before microplastics analyses

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Fältnamn	Indikatorer	Metadata
000		04438naa a2200421 4500
001		oai:DiVA.org:umu-192247
003		SwePub
008		220407s2021 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
009		oai:DiVA.org:uu-484680
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1922472 URI
024	7	a https://doi.org/10.1002/jeq2.203212 DOI
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4846802 URI
040		a (SwePub)umud (SwePub)uu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Bottone, Annau Uppsala universitet,Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden,Institutionen för ekologi och genetik,Umeå Univ, Dept Ecol & Environm Sci, Umeå, Sweden4 aut0 (Swepub:uu)annbo316
245	1 0	a Sodium hypochlorite as an oxidizing agent for removal of soil organic matter before microplastics analyses
264		c 2022-01-25
264	1	b John Wiley & Sons,c 2021
338		a electronic2 rdacarrier
520		a The omnipresence of microplastics (MPs) across Earth's surface has raised concerns about their environmental impact and created an urgent need for methods to identify them in complex soil and sedimentary matrices. However, detecting MPs in the O horizons of soils is difficult because plastic polymers share many physical and chemical properties with natural soil organic matter (SOM). In this study, we assessed whether sodium hypochlorite (NaOCl), a reagent that can oxidize SOM and simultaneously preserve mineral constituents, can be used for MP analysis and characterization in soil environments. In addition, we scrutinized how factors such as MP size, polymer type, extraction methods, and soil matrix affect the recovery of microplastic particles. We used both hydrophobic and density-dependent separation methods to assess the effects of our oxidation treatment on the recovery of MP. We observed that NaOCl effectively removed SOM without greatly altering the surface properties of resistant MP polymers (polypropylene, polylactic acid, low-density polyethylene, and polyethylene terephthalate), which were characterized using scanning electron microscopy and Fourier-transform infrared spectroscopy after SOM removal. The NaOCl treatment caused some chlorination and formation of additional C–OH bonds on polymer surfaces, which likely contributed to the reduced efficiency of the hydrophobic-based (oil) extraction. We conclude that NaOCl treatment can improve detection of MPs in SOM-rich soil and that recovery of MPs from soils is influenced by MP size, polymer type, extraction method, and soil type, which makes it challenging to develop a universal analytical method.
650	7	a NATURVETENSKAPx Geovetenskap och miljövetenskapx Miljövetenskap0 (SwePub)105022 hsv//swe
650	7	a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Environmental Sciences0 (SwePub)105022 hsv//eng
700	1	a Boily, Jean-Francoisu Umeå universitet,Kemiska institutionen,Umeå Univ, Dept Chem, Umeå, Sweden4 aut0 (Swepub:umu)jebo0010
700	1	a Shchukarev, Andreyu Umeå universitet,Kemiska institutionen,Umeå Univ, Dept Chem, Umeå, Sweden4 aut0 (Swepub:umu)ansh0001
700	1	a Andersson, Patrik L.u Umeå universitet,Kemiska institutionen,Umeå Univ, Dept Chem, Umeå, Sweden4 aut0 (Swepub:umu)paan0001
700	1	a Klaminder, Jonatan,d 1976-u Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Umeå Univ, Dept Ecol & Environm Sci, Umeå, Sweden4 aut0 (Swepub:umu)jokl0001
710	2	a Umeå universitetb Institutionen för ekologi, miljö och geovetenskap4 org
773	0	t Journal of Environmental Qualityd : John Wiley & Sonsg 51:1, s. 112-122q 51:1<112-122x 0047-2425x 1537-2537
856	4	u https://doi.org/10.1002/jeq2.20321y Fulltext
856	4	u https://umu.diva-portal.org/smash/get/diva2:1650409/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
856	4	u https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/jeq2.20321
856	4	u https://uu.diva-portal.org/smash/get/diva2:1696095/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-192247
856	4 8	u https://doi.org/10.1002/jeq2.20321
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-484680

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Av författaren/redakt...: Bottone, Anna; Boily, Jean-Fran ...; Shchukarev, Andr ...; Andersson, Patri ...; Klaminder, Jonat ...

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