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Flow injection spectrophotometry coupled with a crushed barium sulfate reactor column for the determination of sulfate ion in water samples |
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| Authors: | Burakham Rodjana Higuchi Keiro Oshima Mitsuko Grudpan Kate Motomizu Shoji |
| Affiliation: | a Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand b FIA Instruments Co., Ltd., 6-15-9 Toshima, Kita-ku, Tokyo 114-0003, Japan c Department of Chemistry, Faculty of Science, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan |
| Abstract: | A new type of a reactor column, a crushed BaSO4 reactor column used for the flow injection spectrophotometric determination of sulfate ion using the exchange reaction of sulfate ion and barium-dimethylsulfonazo III is proposed. The column is very simple and economical. It can be continuously used for 8 h before washing with water for repeated usage of at least 1 month. The procedure is sensitive. Application to various water samples was demonstrated. |
| Keywords: | Sulfate Dimethylsulfonazo III On-line reactor column Flow injection analysis Spectrophotometry |
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