ABSTRACT
With the rapid development of nanotechnology, nanoscale elemental selenium (Se) particles (SeNPs) have been applied for various uses, especially in biomedicine, electronics, catalysis, and food supplement production. To determine the chemical changes of SeNPs in the soil environment, laboratory experiments were conducted using chemically synthesized elemental SeNPs with a diameter of 17 to 69 nm. Selenium speciation analysis using high-performance liquid chromatography inductively coupled plasma mass spectrometry and XANES suggested that, in soils treated with SeNPs, nanoscale elemental Se was transformed into other chemical forms, e.g. selenite and selenate, during the soil incubation process. High levels of Se volatilization were previously observed in fields growing Stanleya pinnata. Effects of different chemical forms of Se, including SeNPs on bioaccumulation and volatilization of Se by mycelium tissues of different fungal species have been examined, including Reishi, Shiitake, Lion’s mane, Oyster Pearl, and.
