JP5477913B2 - 電極体及びその電極体を用いた測定装置 - Google Patents
電極体及びその電極体を用いた測定装置 Download PDFInfo
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- JP5477913B2 JP5477913B2 JP2010260685A JP2010260685A JP5477913B2 JP 5477913 B2 JP5477913 B2 JP 5477913B2 JP 2010260685 A JP2010260685 A JP 2010260685A JP 2010260685 A JP2010260685 A JP 2010260685A JP 5477913 B2 JP5477913 B2 JP 5477913B2
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- 239000000523 sample Substances 0.000 claims description 40
- 239000012488 sample solution Substances 0.000 claims description 40
- 239000007788 liquid Substances 0.000 claims description 31
- 238000004448 titration Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 60
- 229910052697 platinum Inorganic materials 0.000 description 30
- 229910021607 Silver chloride Inorganic materials 0.000 description 19
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 19
- 238000005259 measurement Methods 0.000 description 16
- 239000012286 potassium permanganate Substances 0.000 description 14
- 239000000126 substance Substances 0.000 description 10
- 230000010287 polarization Effects 0.000 description 8
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 5
- 229940039790 sodium oxalate Drugs 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910001961 silver nitrate Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- -1 oxalate ions Chemical class 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 239000012476 oxidizable substance Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229940039748 oxalate Drugs 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
なお、後述するように測定の前処理として試料液へ硝酸銀水溶液を添加する際に発生する塩化銀が、試料容器11の内部で固化するのを防ぐために最底部近傍から微小な気泡によるバブリングを行う図示しない配管も前記試料容器11内に挿入してある。
15 ・・・双白金電極(電極体)
151・・・ボディ
152・・・取付穴
153・・・白金電極(電極)
42 ・・・試料液検知部
Claims (7)
- 基準電極を用いずに一対の電極のみで電位差を測定する方法により滴定の終点を検出するための電極体であって、
前記一対の電極と、
前記一対の電極が取り付けられるボディと、を備え、
前記一対の電極が板状に形成されているとともに前記ボディに形成された一対の取付穴の内部に取り付けられている、又は、前記一対の電極が膜状に形成されているとともに前記ボディの外表面に沿って取り付けられていることを特徴とする電極体。 - 前記ボディが管状に形成されたものであり、前記取付穴が前記ボディの壁面を貫通するように形成されており、
前記電極が前記取付穴と略同じ形状であり、当該取付穴を塞ぐように取り付けられている請求項1記載の電極体。 - 前記電極が平板状のものであり、前記ボディに形成された取付穴の内部側を塞ぐように取り付けられた請求項1又は2記載の電極体。
- 前記一対の電極を通るように切断した断面において、各電極間に前記ボディの切断面がある請求項1、2又は3記載の電極体。
- 前記一対の電極が、前記ボディを挟んで対向するように取り付けられている請求項1、2、3又は4記載の電極体。
- 請求項1乃至5いずれかに記載の電極体と
前記一対の電極間に交流電圧を印加し、その際の当該一対の電極間における導電率に基づいて前記電極体に接触する試料液の有無を検知する試料液検知部と、を備えた測定装置。 - 基準電極を用いずに一対の電極のみで電位差を測定する方法により滴定の終点を検出するための電極体であって、
前記一対の電極と、
前記一対の電極が取り付けられるボディと、を備え、
前記一対の電極がリング状に形成されており、各電極の内周面が前記ボディの外表面に沿って取り付けられていることを特徴とする電極体。
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JP2010260685A JP5477913B2 (ja) | 2010-11-22 | 2010-11-22 | 電極体及びその電極体を用いた測定装置 |
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JP2010260685A JP5477913B2 (ja) | 2010-11-22 | 2010-11-22 | 電極体及びその電極体を用いた測定装置 |
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JP5477913B2 true JP5477913B2 (ja) | 2014-04-23 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6643733B2 (ja) * | 2017-08-30 | 2020-02-12 | 東亜ディーケーケー株式会社 | Cod測定装置、及びプログラム |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6079135U (ja) * | 1983-11-08 | 1985-06-01 | 京都電子工業株式会社 | 試料定量採取装置 |
JPS61262651A (ja) * | 1984-12-19 | 1986-11-20 | Sumitomo Chem Co Ltd | 有機・無機反応の終点の電気化学的測定方法およびそのための電極 |
JP3433579B2 (ja) * | 1995-07-14 | 2003-08-04 | 三菱化学株式会社 | 水分測定方法 |
JP3992692B2 (ja) * | 2004-03-29 | 2007-10-17 | 飯島電子工業株式会社 | 還元糖の測定方法および装置 |
JP4714209B2 (ja) * | 2007-12-04 | 2011-06-29 | 株式会社クレハ環境 | Cod自動計測器およびそれを用いたcodの測定方法 |
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