Mechanism of methylphosphonic acid photo-degradation based on phosphate oxygen isotopes and density functional theory

Abstract

Methylphosphonic acid (MPn) is an intermediate in the synthesis of the phosphorus-containing nerve agents, such as sarin and VX, and a biosynthesis product of marine microbes with ramifications to global climate change and eutrophication.

Fluoroalkyl phosphonic acid radical scavengers for proton exchange membrane fuel cells

“…29 P-centered radicals can react with hydroxyl radicals regenerating phosphonic acid (Path 2–1). 30 Alternatively, the P-centered radicals can combine to make phosphonic acid anhydride 31 (Path 2–2). The reaction activation energy for Path 2–1 (2.46 eV) is slightly lower than that for Path 2–2 (2.68 eV).…”

Oxic methane production by cyanobacteria from the Brazilian Pantanal soda lakes

“…Although organic phosphorous is relatively stable in a water environment and cannot be directly absorbed by phytoplankton, they are easier to mineralize and decompose under alkaline and high temperature conditions (Kong et al, 2018). Degradation of MPn is faster under alkaline conditions than under acidic conditions (Xia et al, 2019). This feature would reduce the potential for phnJ gene expression in lake 07SR, as it is much less alkaline.…”