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第十章 吸光光度法 PowerPoint PPT Presentation


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第十章 吸光光度法 吸光光度法( Absorption Photometry )是一种基于物质对光的选择性吸收而建立起来的一种分析方法。包括可见吸光光度法、紫外 - 可见吸光光度法和红外光谱法等。 吸光光度法同滴定分析法、重量分析法相比,有以下一些特点: ( 一 ) 灵敏度高 吸光光度法测定物质的浓度下限 ( 最低浓度 ) 一般可达 1-10 -3 % 的微量组分。对固体试样一般可测到 10 -4 % 。如果对被测组分事先加以富集,灵敏度还可以提高 1-2 个数量级。.

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第十章 吸光光度法

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