Radiolabeling, -orthophosphate

White Phosphorus. The retention of white phosphoms following absorption is poorly understood. Most of the phosphoms is probably quickly converted to orthophosphate, which in turn is rapidly eliminated from the body in urine (see Section 2.3). Supporting animal data show that up to 17% of administered radiolabeled phosphoms was eliminated in the urine of rats 4 hours after oral administration (Lee et al. 1975). By 5 days post-dosing in the... 

This approach was first outlined by Beckett et al. [6], where radiolabelled pollutants as orthophosphate, in atrazine, and glyphosate) were adsorbed to two Australian river colloid samples. Sedimentation FFF was used to fractionate the samples and the radioactivity of each fraction was measured. From this, it was possible to generate a surface adsorption density distribution (SADD) across the size range of the sample. The SADD is a plot of the amount of compound adsorbed per unit particle surface area as a... 

Isolated epidermal strips (in which all cells other than guard cells have been killed by jgw pH treatment) from Commelina communis L. were radiolabelled with T-orthophosphate ([ r]P., carrier-free 0.2-0.3 mCi/ml) for 3.5-4 h. The tissue was washed, frozen in liquid N and extracted with perchloric acid. Lipids were extracted, deacylated and resolved oirPartisphere SAX hplc [2],... 

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