ID | 15752 |
JaLCDOI | |
Sort Key | 10
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フルテキストURL | |
著者 |
Korenaga Takashi
Center for Environmental Conservation Technology, Okayama University.
Ikatsu Hisayoshi
Center for Environmental Conservation Technology, Okayama University.
Moriwake Toshio
Department of Synthetics Chemistry.
Takahashi Teruo
Department of Industrial Chemistry.
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抄録 | A new method based on the principle of flow injection analysis is presented for the semiautomated determination
of chemical oxygen demand (COD) in environmental water
samples. The method is rapid and continuous, and suitable
for the monitoring of COD in wastewaters. The apparatus
used was simply constructed by parts commercially available
for high performance liquid chromatography. Teflon tubing heated with a boiling water was used as a reactor and simultaneously used for mixing coils and transmission lines. The operating conditions were examined to apply the determination of COD in wastewaters by using glucose as a standard COD substance. The procedures recommended are as follows: Both 4.9x10(-4) M potassium permanganate and 6.7 % sulfuric acid solutions are individually pumped, 20 μl of a sample solution is injected into the flow of the sulfuric acid solution, and then mixed with a mixing joint. The mixed solution is transported to a flow cell
situated in a spectrophotometer fixed at a wavelength of 525 nm, and decrements of absorbance are recorded. The peaks were reproducibly obtained at a concentration range of 10 - 200 mg-COD 1(-1). Chloride up to 1000 mg 1(-1) was not interfered at all. Various wastewater samples were analyzed by the proposed method at a sampling rate of 30 samples per hour, and the apparent COD values obtained were compared with the manual COD ones obtained by JIS method.
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出版物タイトル |
Memoirs of the School of Engineering, Okayama University
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発行日 | 1980-03-01
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巻 | 14巻
|
号 | 2号
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出版者 | 岡山大学工学部
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出版者(別表記) | School of Engineering, Okayama University
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開始ページ | 119
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終了ページ | 129
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ISSN | 0475-0071
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NCID | AA00733903
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資料タイプ |
紀要論文
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OAI-PMH Set |
岡山大学
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言語 |
英語
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論文のバージョン | publisher
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NAID | |
Eprints Journal Name | mfe
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