Luftrensende jord og planter: Forskelle mellem versioner
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<ref>[http://www.sciencedaily.com/releases/2011/08/110819131519.htm Max-Planck-Gesellschaft (2011, August 19). Nitrogen in the soil cleans the air. ScienceDaily] Citat: "...Researchers from the Biogeochemistry Department at the Max Planck Institute for Chemistry in Mainz found out that nitrogen fertilizer indirectly strengthens the self-cleaning capacity of the atmosphere...In nitrogen-rich soils the acid is formed from nitrite ions produced through microbiological transformations of ammonium and nitrate ions...they demonstrated the existence of this previously unnoticed pathway in the [[Kvælstofkredsløb|nitrogen cycle]]...The source of the high concentrations of [[HONO]] observed in the [[Troposfære|lower atmosphere]] had long been a mystery..."</ref>
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<ref>[http://www.sciencedaily.com/releases/2009/09/090903163949.htm American Society for Horticultural Science (2009, September 6). Indoor Plants Found To Release Volatile Organic Compounds. ScienceDaily] Citat: "...The study concluded that "while ornamental plants are known to remove certain [[flygtige organiske forbindelser|VOCs]], they also emit a variety of VOCs, some of which are known to be biologically active. The longevity of these compounds has not been adequately studied, and the impact of these compounds on humans is unknown."..."</ref>
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