JPS57187655A - Measurement of quantity of nitride nitrogen - Google Patents

Measurement of quantity of nitride nitrogen

Info

Publication number
JPS57187655A
JPS57187655A JP7132581A JP7132581A JPS57187655A JP S57187655 A JPS57187655 A JP S57187655A JP 7132581 A JP7132581 A JP 7132581A JP 7132581 A JP7132581 A JP 7132581A JP S57187655 A JPS57187655 A JP S57187655A
Authority
JP
Japan
Prior art keywords
crucible
nitride
sample
reactor
fed
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
JP7132581A
Other languages
Japanese (ja)
Inventor
Atsushi Chino
Takamasa Takahashi
Mizuo Tanaka
Masaharu Tsuchida
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP7132581A priority Critical patent/JPS57187655A/en
Publication of JPS57187655A publication Critical patent/JPS57187655A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/002—Determining nitrogen by transformation into ammonia, e.g. KJELDAHL method

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

PURPOSE:To automatically determine nitride nitrogen in a quick and accurate manner, by a method whetein a sample mitride is placed in a molten alkali in a crucible and a carrier gas with an inert gas added to steam is introduced into a reactor accomodating the crucible for coulometric titration of NH3 generated. CONSTITUTION:A sample nitride is fed at given intervals into a crucible 5 containing alkali 4 such as NaOH accomodated in a reactor 1 comprising a cell 2 made of Ni and a glass upper lid 3 from a sample feeding three-way cock 9 at the top of the upper lid 3. After scoured 11 with sulfuric acid, an inert gas 10 such as Ar is passed sequentially through a flowmeter 12, an NaOH particle- filled column 13, an electric furnace 14 and a Ti particle-filled column 15 to remove NH3, O2 and the like and a clean carrier gas thus obtained is fed into molten NaHO with a hydrogenation lance 17 passing through a steam supply bottle 16. NH3 gas generated is introduced into coulometric titrator 18 from the three-way cock 9 for determination. This enables accurate measurement of nitride nitrogen in a continuous and quick manner.
JP7132581A 1981-05-14 1981-05-14 Measurement of quantity of nitride nitrogen Pending JPS57187655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7132581A JPS57187655A (en) 1981-05-14 1981-05-14 Measurement of quantity of nitride nitrogen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7132581A JPS57187655A (en) 1981-05-14 1981-05-14 Measurement of quantity of nitride nitrogen

Publications (1)

Publication Number Publication Date
JPS57187655A true JPS57187655A (en) 1982-11-18

Family

ID=13457289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7132581A Pending JPS57187655A (en) 1981-05-14 1981-05-14 Measurement of quantity of nitride nitrogen

Country Status (1)

Country Link
JP (1) JPS57187655A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4834593A (en) * 1971-09-06 1973-05-19
JPS522793A (en) * 1975-06-24 1977-01-10 Denki Kagaku Keiki Co Ltd Nitrogen content measuring device
JPS5444590A (en) * 1977-09-14 1979-04-09 Denki Kagaku Kogyo Kk Quantitative nitrogen analysing method and apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4834593A (en) * 1971-09-06 1973-05-19
JPS522793A (en) * 1975-06-24 1977-01-10 Denki Kagaku Keiki Co Ltd Nitrogen content measuring device
JPS5444590A (en) * 1977-09-14 1979-04-09 Denki Kagaku Kogyo Kk Quantitative nitrogen analysing method and apparatus

Similar Documents

Publication Publication Date Title
ZA856828B (en) A process and an apparatus for determining and monitoring hydrogen peroxide concentrations in liquid reaction media
JPS57187655A (en) Measurement of quantity of nitride nitrogen
NO156377C (en) PROCEDURE FOR REFINING METAL BATHS AND DEVICE FOR CARRYING OUT THE PROCEDURE.
ZA932387B (en) Process for determining the concentration of a gas in molten metal
GB1359406A (en) Sulphur dioxide concentration measurement
US3363990A (en) Process for determining the nitrogen content in solids or liquids
JPS5439791A (en) Operation method of reactor
JPS5513840A (en) Producer for sample gas for atomic absorption analysis
JPS57186158A (en) Measuring method for turbidity and chromaticity
JPS5758895A (en) Analytical method of creatinine and apparatus
JPS5635053A (en) Measuring method of transmitted hydrogen in metal sample
GB2013248A (en) Refining molten metal
JPS54113383A (en) Method and apparatus for measuring enzyme
JPS5513135A (en) Measuring device for nitrogen content of waste water
GB1185086A (en) Method for Operating an Oxygen Top-Blowing Converter
GB896269A (en) Improvements in or relating to deuterium concentration processes
JPS5774095A (en) Rapid counting of cells of aerobic microgranisms
JPS6463894A (en) Water quality diagnostic system
Thill-Bartel et al. Automation of Oxygen Steelmaking Plants
JPS5796259A (en) Analyzing method for nitrogen in metal
JPS56153252A (en) Measuring device for quantity of organic carbon
Beeghly et al. Determination of Nitrogen and Sulfur in Steel
JPS6421357A (en) Apparatus for measuring carbon quantity
Gruner et al. The precise determination of nitrogen in boron nitride
JPS5686339A (en) Gas analysis method