荞麦不同组成部分中金属元素含量及分析

Analysis of contents of metal elements in different parts of buckwheat

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。方法:原子吸收分光光度法及原子荧光分光光度法。结果:荞麦茎中铜、铁、锌、锶、硒、锰、砷、镉均高于叶和花;荞麦叶中钙、铅、汞明显高于茎和花。结论:荞麦茎、叶、花中铅含量较高均超过国家标准;砷、镉、汞无超标现象。

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）. Methods ：The atom absorbing spectrum method and atom atomic fluorescence spectrometry method were used. Results： The contents of Cu, Fe, Zn, Sr, Se, Mn, As, Cd in stems were all higher than those in leaves and flowers of buckwheat. The contents of Ca, Pb and Hg in the leaves of buckwheat were obviously higher than those in stems and flowers. Conclusion：The content of Pb in the stems,leaves and flowers is higher than the national standard. The As,Cd and Hg are lower than it.