河南农业大学：《仪器分析》课程教学资源（PPT课件）第二章 分子吸光分析法

a1 dn1 dn2 dn3 a3 a2 ds = a1dn1+a2dn2+a3dn3

a1 dn1 dn2 dn3 a3 a2 ds = a1dn1+a2dn2+a3dn3

= − = m i aidni Ix S dIx 1 1   = − = n m j i i I Io a dn Ix S dIx 0 1 1 = = m i aini I S Io 1 1 ln

= − = m i aidni Ix S dIx 1 1   = − = n m j i i I Io a dn Ix S dIx 0 1 1 = = m i aini I S Io 1 1 ln

= = = m i aini I S Io A 1 0.4343 lg ( ) b V S = NV n Ci i =  = = = m i i i a cNV V b I Io A 1 0.4343 lg

= = = m i aini I S Io A 1 0.4343 lg ( ) b V S = NV n Ci i =  = = = m i i i a cNV V b I Io A 1 0.4343 lg

 = = m i i i Na bc 1 0.4343  = = m i icib 1  令 i = 0.4343Nai Ai = i b ci 如果吸光介质内只有一种吸光分子 m m b A A A i A =  ici = + ++ = 1 2 1 

 = = m i i i Na bc 1 0.4343  = = m i icib 1  令 i = 0.4343Nai Ai = i b ci 如果吸光介质内只有一种吸光分子 m m b A A A i A =  ici = + ++ = 1 2 1 

A =  b c 定量分析的依据 (三)、吸收定律的适用性与限制 1、吸收定律具有加和性，即 m m b A A A i A =  ici = + ++ = 1 2 1 

A =  b c 定量分析的依据 (三)、吸收定律的适用性与限制 1、吸收定律具有加和性，即 m m b A A A i A =  ici = + ++ = 1 2 1 