A diffusion tube is a scientific device that passively samples the concentration of one or more gases in the air, commonly used to monitor average air pollution levels over a period ranging from days to about a month.[1] Diffusion tubes are widely used by local authorities for monitoring air quality in urban areas,[2] in citizen science pollution-monitoring projects carried out by community groups and schools,[3][4] and in indoor environments such as mines[5] and museums.[6]
^Nash, David G.; Leith, David (February 2010). "Use of Passive Diffusion Tubes to Monitor Air Pollutants". Journal of the Air & Waste Management Association. 60 (2): 204–209. doi:10.3155/1047-3289.60.2.204. eISSN 2162-2906. ISSN 1096-2247. PMC 2838214. PMID 20222533.
^"Local Air Quality Management Technical Guidance (TG16)". Local Air Quality Management. UK Government Department for Environment and Rural Affairs. April 2021. Retrieved 28 February 2022.
^"Using Diffusion Tubes". Care4Air. Sheffield City Council. Retrieved 28 February 2022.
^"Diffusion Tubes". LoveCleanAir South London. Retrieved 28 February 2022.
^Pederson, Jerald, ed. (1985). Bureau of Mines Research. U.S. Department of the Interior. p. 13.
^Grzywacz, Cecily (2006). Monitoring for Gaseous Pollutants in Museum Environments. Getty Conservation Institute. p. 48. ISBN 9780892368518.
A diffusiontube is a scientific device that passively samples the concentration of one or more gases in the air, commonly used to monitor average air...
structure makes transport possible by simple or passive diffusion, which consists of the diffusion of substances through the membrane without expending metabolic...
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A Crookes tube (also Crookes–Hittorf tube) is an early experimental electrical discharge tube, with partial vacuum, invented by English physicist William...
the phloem in a way that diffusion can be maximized. It has been discovered that the angiosperm phloem can use the sieve tubes as a way to transport various...
the drawing up of liquids between the hairs of a paint-brush, in a thin tube such as a straw, in porous materials such as paper and plaster, in some non-porous...
inside. It also comes with diffusion bonded cathode (a type of cathode that prevents the back-emission of the anode). This tube was designed in December...
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and diffusion: Some substances (small molecules, ions) such as carbon dioxide (CO2) and oxygen (O2), can move across the plasma membrane by diffusion, which...
(NO2)." Lambeth monitor air quality on Clapham Road in Stockwell using diffusiontubes. Since the introduction of the Oval STN, the pollution in the adjacent...
tracheal trunks, diffusion is still important for distributing oxygen to individual cells through the network of smaller tracheal tubes. In fact, the rate...
niobium–titanium. Vanadium–gallium (V3Ga) can be prepared by surface diffusion where the high temperature component as a solid is bathed in the other...
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