Pollution of water bodies by phosphorus in runoff from soil amended with animal manures is one of the greatest threats to water quality in developed countries. The environmental fate of manure phosphorus is determined in part by its chemical composition, yet extraction procedures to assess this are poorly developed and provide no structural information. We used solution 31P NMR spectroscopy to ...

BACKGROUND The novel chiral phosphorus-1,1-dithiolates [4-CH3OC6H4P(S)(OR)S]-[H3NC(CH3)3]+ were synthesized by the reaction of [RPS2)]2 (R = 4-MeOC6H4) or P2S5 and the respective alcohol ROH (R = myrtanyl, 2-naphthylethyl, myrtenyl, borneol) in toluene. The reaction of phosphorus-1,1-dithiolates 1-4 and Au(tht)Cl, AuClPPh3 or AgNO3 and PPh3 gave rise to gold(I)- and silver(I)-complexes in THF. ...

1. Organic phosphorus is abundant in soil and its turnover can supply a considerable fraction of the phosphorus taken up by natural vegetation. Despite this, the ecological significance of organic phosphorus remains poorly understood, which is remarkable given the biological importance of phosphorus in terrestrial environments. 2. Of particular interest is the possibility that coexisting plant ...

The promising results obtained with certain organic phosphorus compounds such as Dow-ET-14 and Dow-ET-57 against Hypoderma sp. (McGregor, Radeleff & Bushland, 1954; McGregor & Bushland, 1957; Adkins, 1957; Roth & Gaines, 1957), indicated the possible use of these systemic insecticides for the treatment of specific oculo-vascular myiasis (Basson, 1962). The heavy losses sustained by the farmers ...

lactose), and the formation of a " skin " (due to drying of protein on the surface, and not peculiar to milk). These changes are not of great importance as regards the infant. The next group consists of changes not appreciable by the ordinary observers, namely the precipitation of calcium, and alterations in the organic phosphorus compounds. The former renders the caseinogen less coagulable in ...