JP2005091091A - 環境水中の有害物質のモニタリング方法 - Google Patents
環境水中の有害物質のモニタリング方法 Download PDFInfo
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Abstract
【解決手段】 微生物を固定化した膜と溶存酸素電極とから構成される微生物センサを用いて環境水中の有害物質を検出する際に、基質濃度を変えたときの前記微生物センサの出力電流値又は出力電圧値の変化を測定することにより基質濃度依存応答特性を求め、あるいは定常の運転状態から所定の基質濃度に変えた際の、前記微生物センサの出力電流値又は出力電圧値が予め定めた値を超えるまでの時間を測定することにより、前記所定の基質濃度における応答速度を求め、前記基質濃度依存応答特性あるいは前記応答速度に応じて該微生物センサの設定温度を変えることにより、微生物の活性度を制御する。
【選択図】 なし
Description
呼吸阻害率(%)={(VM−V2)/(V1−V2)}×100…(1)
V1:ゼロ校正のセンサ出力
V2:フィード液のセンサ出力
VM:検水のセンサ出力
なお、フィード液としては、V1測定用としては緩衝液、V2測定用としては緩衝液にアンモニア性窒素が5〜10mg/Lとなるように添加した液、更に、VM測定用としては、アンモニア性窒素1〜5mg/Lとなるように添加したものを用いた。
2.恒温槽
3.熱交換器
4.二方切換三方弁
5.測定部
6.表示部
7.制御部
8.記録計
9a〜9h.電磁弁
10.ローラークランプ
11a〜11b.ポンプ
12.エアポンプ
13.圧力センサ
20.フローセル
20a.試料流路
21.溶存酸素電極
22.正極
23.負極
24.隔膜
25.固定化微生物膜
26.ステンレス製金網
27a〜27c.Oリング
28a〜28b.リード線
29.ワッシャー
Claims (4)
- 微生物を固定化した膜と溶存酸素電極とから構成される微生物センサを用いて環境水中の有害物質を検出する際に、基質濃度を変えたときの前記微生物センサの出力電流値又は出力電圧値の変化を測定することにより基質濃度依存応答特性を求め、この基質濃度依存応答特性に応じて該微生物センサの設定温度を変えることにより、微生物の活性度を制御することを特徴とする環境水中の有害物質のモニタリング方法。
- 前記基質濃度依存応答特性が所定値を超えるときに、前記微生物センサの設定温度を該微生物の至適生育温度よりも高い温度に設定する請求項1記載の環境水中の有害物質のモニタリング方法。
- 微生物を固定化した膜と溶存酸素電極とから構成される微生物センサを用いて環境水中の有害物質を検出する際に、定常運転状態から所定の基質濃度に変えた際の、前記微生物センサの出力電流値又は出力電圧値が予め定めた値を超えるまでの時間を測定することにより、前記所定の基質濃度における応答速度を求め、この応答速度に応じて該微生物センサの設定温度を変えることにより、微生物の活性度を制御することを特徴とする環境水中の有害物質のモニタリング方法。
- 前記応答速度が所定値を超えるときに、前記微生物センサの設定温度を該微生物の至適生育温度よりも高い温度に設定する請求項3記載の環境水中の有害物質のモニタリング方法。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101812402B (zh) * | 2009-02-25 | 2013-12-25 | 株式会社东芝 | 异常水质检测装置 |
CN103604912A (zh) * | 2013-11-26 | 2014-02-26 | 闫振广 | 筛选水质基准受试生物的方法 |
-
2003
- 2003-09-16 JP JP2003323214A patent/JP4161111B2/ja not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101812402B (zh) * | 2009-02-25 | 2013-12-25 | 株式会社东芝 | 异常水质检测装置 |
CN103604912A (zh) * | 2013-11-26 | 2014-02-26 | 闫振广 | 筛选水质基准受试生物的方法 |
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