Determination of 24 Inorganic Elements in Roots and Stems of P. Pentandrum(Blanco) Merr. by ICP-MS/ICP-AES

The 24 inorganic elements including Li,B,Mg,Al,P,Ca,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Sr,Ba,Cd,Pb,Na,K,Be,Tl and Mo in roots and stems of P. pentandrum(Blanco)Merr. were determined by inductively coupled plasma atomic emission spectrometry(ICP-AES) and inductively coupled plasma mass spectrometry(ICP-MS) with HNO3 and H2O2 digestion.The experiment results show that roots and stems of P. pentandrum(Blanco)Merr. contain rich amount of essential macro and trace elements,among which the contents of Ca,K,Mg and P are high,and in the stem Kand P contents are higher than that in roots.The methods are verified by comparative analysis of the standard reference material,and the precision RSD was in the range of 0.5%～6.9%.This method was applied to the determination of inorganic elements in the sample of P. pentandrum(Blanco) Merr. with good accuracy and precision.