WAND Yu-gong, YAND Fa-wang, LIU Jian-jun, MAO Zhen-cai

( Lanzhou Testing and Quality Supervision Center for Geological and Mineral Products,  The Ministry of Land and Resources, Lanzhou 730050, China)

Abstract: 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 .

Key words: inductively coupled plasma atomic emission spectrometry; soil; phosphorus

E-mail: wangyugong586@sohu.com

Analysis and Testing Technology and Instruments, Vol. 18, No. 3, 2012,183-186