Abstract − Analytical Sciences, 19(9), 1335 (2003).
Determination of 2-Propanol in Surface Cleaning Solutions Used for Copper Continuous Casting Process by Flow Injection-Spectrophotometric Detection with On-line Column Separation
Yutaka HAYASHIBE, Masahiro TOKUDA, and Minoru TAKEYA
Materials Characterization Department, Omiya Research Center, Central Research Institute, Mitsubishi Materials Corporation, 1-297 Kitabukuro-cho, Omiya, Saitama 330-8508, Japan
A flow-injection system has been developed for the determination of 2-propanol in the surface cleaning solutions used in the copper continuous cast rod making system. Adsorption chromatography in nitric acid medium was used for the on-line separation of oily substances in the sample solution. Cerium(IV) diammonium nitrate was utilized as the chromogenic reagent for the spectrophotometric detection of 2-propanol. The system permits a throughput of one sample per hour for the oily sample, and of 12 samples per hour for the none-oily sample. The reproducibility has been proven to be satisfactory with a relative standard deviation of less than 6.0% (2.2%(V/V) 2-propanol level, n = 23). The detection limit is 0.01%(V/V).
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