JPS5766351A - Measuring method for nitrous acid - Google Patents

Measuring method for nitrous acid

Info

Publication number
JPS5766351A
JPS5766351A JP55141468A JP14146880A JPS5766351A JP S5766351 A JPS5766351 A JP S5766351A JP 55141468 A JP55141468 A JP 55141468A JP 14146880 A JP14146880 A JP 14146880A JP S5766351 A JPS5766351 A JP S5766351A
Authority
JP
Japan
Prior art keywords
microorganism
electrode
oxygen
nitrous acid
bacterium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP55141468A
Other languages
Japanese (ja)
Inventor
Hiroshi Suzuki
Motohiko Hikima
Takeo Yasuda
Masao Karube
Shuichi Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ajinomoto Co Inc
Original Assignee
Ajinomoto Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ajinomoto Co Inc filed Critical Ajinomoto Co Inc
Priority to JP55141468A priority Critical patent/JPS5766351A/en
Publication of JPS5766351A publication Critical patent/JPS5766351A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/001—Enzyme electrodes

Abstract

PURPOSE:To improve stability and reliability, by a method wherein a microorganism electrode is formed such that a nitrification bacillus, selectively oxidizing only nitrous acid into nitric acid, is attached to a diaphragm of a dissolved oxygen electrode, and the outside thereof is covered with a gas permeable film, and the microorganism electride is used. CONSTITUTION:A microorganism electrode 11 consists of a bacteriim laye 1 of microorganism, supporter 2, covering the bacterium layer 1 and supporting bacterium microorganism, a gas permeable film 3, a diaphragm 4 of an oxygen electrode, a platinum cathode 5, an aluminum anode 6, a potassium chloride electrolytic liquid 7 and the like. A microorganism bacterium is what is called a nitrification bacillus, and is nitric acid preparing bacterium, e.g., nitrobacter agiles ATCC 14123, which oxidizes nitrous acid. The way to measure nitrous acid by means of the electrode is that a pH of liquid to be measured is set below 5.0, and concentration of dissolved oxygen is set into a saturation or a state near a saturation by blowing oxygen or air. The microorganism electrode is brought into contact with the liquid to be measured. Under the coexistence of oxygen, the nitrification bacillus oxidizes the nitrous acid and consumes oxygen, which results in reducing the output current of the microorganism electrode.
JP55141468A 1980-10-09 1980-10-09 Measuring method for nitrous acid Pending JPS5766351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55141468A JPS5766351A (en) 1980-10-09 1980-10-09 Measuring method for nitrous acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55141468A JPS5766351A (en) 1980-10-09 1980-10-09 Measuring method for nitrous acid

Publications (1)

Publication Number Publication Date
JPS5766351A true JPS5766351A (en) 1982-04-22

Family

ID=15292578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55141468A Pending JPS5766351A (en) 1980-10-09 1980-10-09 Measuring method for nitrous acid

Country Status (1)

Country Link
JP (1) JPS5766351A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109001364A (en) * 2018-09-26 2018-12-14 华东师范大学 A kind of binary channels sampling atmosphere HONO measurement system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109001364A (en) * 2018-09-26 2018-12-14 华东师范大学 A kind of binary channels sampling atmosphere HONO measurement system and method

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