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Microplastics and Nanoplastics
Fig. 3 | Microplastics and Nanoplastics

Fig. 3

From: Matrix Matters: novel insights for the extraction, preparation, and quantitation of microplastics in a freshwater mesocosm study

Fig. 3

Left Panel: Top: Pyrogram of PP standard without Alumina (conventional pyrolysis at 600 ℃ for 1 min). A single peak assigned to 2,3-dimethyl1-heptene is observed at  ~5.32 min. Bottom: Pyrogram of PP standard with Alumina (conventional pyrolysis at 600 ℃ for 1 min). Several peaks containing mass ions m/z = 126 are observed indicating isomerization of 2,4-dimethyl 1-heptene. Right Panel: Top: Pyrogram of PU standard with Alumina (conventional pyrolysis at 600 ℃ for 1 min). Evidence for MDI was not observed indicating hydrolysis of MDI to MDA proceeds in the presence of alumina. Bottom: Pyrogram of PU standard without Alumina (conventional pyrolysis at 600 ℃ for 1 min). Evidence for MDI is seen between 14 and 16 min

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