In order to find out inorganic elements in serum which have something to do with children fatigue, the content of Zn, Fe, Cu, Ca, Mn and Pb in children serum of 1562 samples (153 samples of children with fatigue) was determined.
测定了1562名儿童(其中包括153名易疲劳儿童)血清中Zn、Fe、Cu、Ca、Mn和Pb的含量。