译 名：
DETERMINATION OF TRACE ELEMENTS IN POTATOES BY FAAS METHOD
作 者：
LIU Li-xing(School of Petrochemical Technology,Liaoning University of Petroleum & Chemical Technology,Fushun 113001,China)
关键词：
FAAS method;noncomplete digestion method;potatos;trace element
摘 要：
The samples were treated with noncomplete digestion method.Calcium,magnesium,iron and zinc in potatos were successfully determined by flame atomic absorption spectrometry.The samples were digested in the mixed acid of HClO4-HNO3(1+3) under low temperature,and so made into transparent grass-green solution of sample.La3+was used as releasing agent of calciumand magnesium to eliminate chemical interference.NaCl was used as deionization agent of potassium to eliminate ionization interference.Choice of digestiondissolvant,interferences,identity of the physical properties for test solution and its blank solution were studied.RSD′s were less than3.9%.The determination results of this method were consistent with those obtained by ashing method.The relative errors between them were less than ±2.6%.
