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Disposable Chemical Oxygen Demand Sensor Using a Microfabricated Clark‐Type Oxygen Electrode with a TiO 2 Suspension Solution
Author(s) -
Lee KyongHoon,
Kim YoonChang,
Suzuki Hiroaki,
Ikebukuro Kazunori,
Hashimoto Kazuto,
Karube Isao
Publication year - 2000
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200011)12:16<1334::aid-elan1334>3.0.co;2-5
Subject(s) - oxygen sensor , chemical oxygen demand , oxygen , suspension (topology) , electrode , clark electrode , titanium dioxide , detection limit , limiting oxygen concentration , analytical chemistry (journal) , biochemical oxygen demand , chemistry , materials science , chromatography , environmental engineering , environmental science , wastewater , metallurgy , organic chemistry , mathematics , homotopy , pure mathematics , electrolyte
A disposable chemical oxygen demand (COD) sensor was constructed using a microfabricated Clark‐type oxygen electrode and titanium dioxide (TiO 2 ) fine particles suspended in a sample solution. Under UV irradiation, a decrease in the dissolved oxygen in the sample was correlated to COD, a parameter representing the organic concentration of the sample. The sensor performance was evaluated using artificial and real water samples from lakes in Japan. The response time of the sensor was approximately 3–4 minutes with a detection limit of 0.118 ppm.