Inductively Coupled Plasma Atomic Emission Spectrometric Determination of Total Phosphorus in Soil

Using sodium hydroxide as the solvent,inductively coupled plasma emission spectrometric determination of total phosphorusr in soil has been carried out. Study shows that the detection limit is 0.025mg/kg. Precision of 6 actual soil samples were 1.27﹪～3.40﹪, and the recovery rate was 95﹪～102﹪. The method has been applied to the determination of phosphorus in national standard reference and the results accord with the certified values. The method is rapid, accurate .