Table 3 Retention time and absorbance maxima belong to reference dyestuff standards
Row No | Reference dyestuff name | Retention time (min) | Absorbance maxima (nm) |
|---|---|---|---|
1 | alizarin | 27.199 | 251, 283, 328, 429 |
2 | apigenin | 25.350 | 266, 294, 337 |
3 | chrysophanol | 32.799 | 225, 256, 283, 317, 429 |
4 | ellagic acid | 16.476 | 253, 297, 367 |
5 | emodin | 29.859 | 223, 267, 288, 440 |
6 | flavone | 29.983 | 251, 295 |
7 | gallic acid | 3.964 | 216, 272 |
8 | isorhamnetin | 25.797 | 224, 233, 255, 301, 371 |
9 | kaempferol | 25.512 | 225, 264, 295, 323, 367 |
10 | luteolin | 22.442 | 217, 261, 295, 349 |
11 | purpurin | 28.465 | 253, 294, 455, 480, 514 |
12 | rhamnetin | 26.987 | 230, 257, 299, 37 |
13 | vanillic acid | 11.135 | 215, 261, 293 |