#Phosphorus ag source free#

It generally comprises of phosphine adsorbed by the media, phosphine gas in the interstice, and solid phosphides. Thus, MBP does not necessarily refer to the pre-existence of phosphine in the matrix. It is worth noting that MBP is defined as the non-gaseous reduced phosphorus compounds that are transformed into phosphine gas by acid or alkaline digestion 45. MBP has been detected in various types of soils and sediments 14, 45, 50, 54, sewage sludge 5, and feces 55. The former has been detected in marsh gas 36, sludge biogas 1, upper troposphere 37, and the atmosphere around the world 33.

#Phosphorus ag source free#

Phosphine exists universally in the natural environment with two different forms: free gaseous phosphine and matrix-bound phosphine (MBP). With the development of chromatography techniques and sample pretreatment methods, phosphine has been shown to exist universally in the environment.

For a long time, the distribution of phosphorus in the cycle of the hydrosphere was thought to be ambiguous and mass-unbalanced, until the detection of phosphine in wastewater treatment plants by Dévai et al.