A new absorption measurement technique for a capillary super-thin cell
- 化学化工－已发表论文 
We report a new technique of absorption measurement for capillary super-thin cell in the first time. The new technique determines the absorbed intensity instead of the absorbance as conventional way. The absorbed intensity is measured for a capillary cell (i.d. 50 mu m) and a decussate optical super-thin cell (40 mu m) for serial KMnO4 solutions. High sensitivity and good S/N ratio are observed, and the calibration curves are fairy linear. For a 10 mu g/mL KMnO4 solution, the S/N ratio of absorbed intensity determination is about 10, which is better than that of absorbance determination in the capillary cell. This super-thin cell in the decussate configuration provides a novel type optical detection cell for capillary electrophoresis.