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Environmental fate & pathways

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Due to its inherent chemico-physical properties, such as absence of lipophilicity as well as the capability of the organism to excrete absorbed silicates, 

bioaccumulation can be disregarded. 

However, silica/silicate can be actively accumulated by terrestrial plants (e.g. grass) 

and some marine organisms (e.g. diatoms, radiolarians, and sponges), which 

represents a normal natural process.