分光光度法测定铬黑T解离常数实验设计
孙瑞卿, 许紫婷, 陈珠灵, 林佳丽
Experimental Design on the Determination of Dissociation Constants of Eriochrome Black T by Spectrophotometry
Ruiqing Sun, Ziting Xu, Zhuling Chen, Jiali Lin
表2
618 nm处铬黑T溶液吸光度及计算
样品编号
pH
A
(
λ
618 nm
)
$ \lg \left( {\frac{{{A_0} - {A_1}}}{{{A_1} - {A_2}}}} \right) $
样品编号
pH
A
(
λ
618 nm
)
$ \lg \left( {\frac{{{A_0} - {A_1}}}{{{A_1} - {A_2}}}} \right) $
样品编号
pH
A
(
λ
618 nm
)
$ \lg \left( {\frac{{{A_0} - {A_1}}}{{{A_1} - {A_2}}}} \right) $
1
2.09
0.103
11
5.75
0.193
?0.940
21
10.84
0.693
?0.470
2
2.82
0.104
?0.903
12
5.98
0.277
?0.570
22
11.26
0.602
?0.240
3
3.18
0.105
?0.540
13
6.25
0.37
?0.310
23
11.58
0.494
0.004
4
3.55
0.106
?0.300
14
6.74
0.622
0.275
24
11.76
0.39
0.238
5
3.90
0.107
?0.100
15
7.02
0.783
0.785
25
11.98
0.301
0.465
6
4.22
0.108
0.097
16
7.85
0.89
2.414
26
12.27
0.195
0.856
7
4.50
0.11
0.544
17
8.63
0.893
27
12.58
0.153
1.131
8
4.77
0.112
18
8.97
0.894
28
12.81
0.134
1.327
9
4.98
0.112
19
10.06
0.853
?1.270
29
12.98
0.098
10
5.54
0.153
?1.260
20
10.42
0.79
?0.820