Objective: To measure the contents of metal elements Cu, Fe, Zn, Ca, Sr, Se, Mn, Pb, As , Hg, Cd in the different parts of buckwheat (such as stems, leaves and flowers).

• 摘要目的：测定荞麦不同组成部分茎、叶、花中金属元素（铜、铁、锌、钙、锶、硒、锰、铅、砷、汞、镉）的含量。