吸光度计算公式

A ln ln K n ln[CdS] f A A
[G nCdS] A ([G]t [G nCdS]) A A
[G nCdS]
பைடு நூலகம்
A [G]t A
[CdS] f [CdS]t n[G nCdS] [CdS]t
nA [G]t A
二
K
[G nCdS] [G nCdS] A / l [G] f [CdS]nf [G] f ([CdS]t n[G nCdS])n [G] f ([CdS]t nA/ l ) n
与（二）一致
一
平衡常数
G + nCdS
K
G.nCdS
假定： （1）明胶在在选定的 波长范围内无吸收 （2）明胶大分子上被 完全覆盖时的吸光度为 A∞
[G nCdS] K [G] f [CdS]nf
K[CdS]nf [G nCdS] [G nCdS] A [G] f [G]t [G nCdS] A A
nA [CdS ] f [CdS ]t n[G nCdS ] [CdS ]t l
ln(A / l ) ln(K[G] f ) n ln([CdS]t nA/ l )
ln A ln(K [G] f l ) n ln([CdS]t nA / l )
l[CdS]t nA ln(K [G] f l ) n ln( ) l A nA lg lg K n lg{[CdS]t } l[G]t A l
五
Scatchard 方程：
r
r K (n r ) cf
[CdS]b n[G nCdS] nA / l nA [G]t [G]t [G]t l [G]t
nA l
[CdS ] f [CdS ]t [CdS ]b [CdS ]t n[G nCdS ] [CdS ]t
nA l
[CdS ] f [CdS ]t n[G nCdS ] [CdS ]t
令n=1:
[CdS]t 1 1 A l (l[G]t A) K
1 1 1 1 1 A l[G]t l[G] K ([CdS] A ) l[G]t [G]t K (l[CdS]t A) t t l
nA / l[G ]t nA nK K nA l[G ]t [CdS ]t l A A K K [G ]t {l[CdS ]t nA} l[G ]t
A A K K [G]t K K [G]t A l[CdS]t nA l l
K [G]t K 1 [CdS ]t nA A l 1 1 1 1 A [G ]t l K [G ]t (l[CdS ]t nA)
1/ n

A l [G ]t
1 1 ln A ln K ln(l [G ]t ) ln p n n
ln A ln(K [G] f l ) n ln([CdS]t nA / l )
l[CdS]t nA ln(K [G] f l ) n ln( ) l
令A l[G]t
三
K[CdS]nf [G nCdS] [G nCdS] A / l A [G] f [G]t [G nCdS] [G]t A / l l[G]t A
l[G]t A
A

l[G]t
A
1 1 K[CdS]nf
1 1 1 A l[G]t l[G]t K [CdS]nf
四 θ=(number of adsorption site filled)/ (number of adsorption site available) =[G ·CdS]/[G]t Freundlich:
ka k p d
1 /( )
K p