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原子吸收分析中標準曲線校直計算

  • 摘要: 原子吸收分析中多數元素的標準曲線線性范圍較窄,高含量中測量值往往落在曲線彎曲部分,為了擴大測量范圍,現多數儀器具有曲線校直裝置,但它操作調整煩雜,效果也不理想。本文提出的曲線校直計算,方法簡便。作圖法與線性回歸法原理相合。先求出校直系數K,然后對試樣測量的吸光度進行校直計算,經過校正后的吸光度在標準曲線直線部分延伸線上查得含量。文中通過測定高錳實例計算,證明方法簡便可行,便于推廣應用。

     

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