Spectrophotometric determination of micro amounts of cationic polymeric flocculants by flow injection analysis |
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Authors: | Kyoji Tôei Takahisa Zaitsu Chiaki Igarashi |
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Institution: | Department of Chemistry, Faculty of Science, Okayama University, Tsushimanaka, Okayama-shi 700 Japan;Ebara Research Co., Ltd., Fujisawa-shi 251 Japan |
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Abstract: | Cationic polymeric flocculants in water are determined spectrophotometrically with the anionic compound 3-(2-hydroxy-3-carboxyanilide-1-azonaphthalene)-4-hydroxybenzenesulfonic acid at pH 10 by flow injection analysis. The calibration graph at 680 nm is rectilinear from 0 to 20 mg l?1 under optimal conditions. The relative standard deviation for 20 injections of Cat-Floc (10 mg l?1) was 1.2%; the sample throughput was 60 h?1. |
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