SE8803560L - Hydroxyl radicals determn. in oxidative processes - by contacting reaction soln. with radical-binding reagent - Google Patents

Hydroxyl radicals determn. in oxidative processes - by contacting reaction soln. with radical-binding reagent

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Publication number
SE8803560L
SE8803560L SE8803560A SE8803560A SE8803560L SE 8803560 L SE8803560 L SE 8803560L SE 8803560 A SE8803560 A SE 8803560A SE 8803560 A SE8803560 A SE 8803560A SE 8803560 L SE8803560 L SE 8803560L
Authority
SE
Sweden
Prior art keywords
hydroxyl radicals
determination
determn
radical
reaction soln
Prior art date
Application number
SE8803560A
Other languages
Swedish (sv)
Other versions
SE8803560D0 (en
Inventor
B S Wallin
J Gierer
T Reitberger
Original Assignee
Eka Nobel Ab
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 Eka Nobel Ab filed Critical Eka Nobel Ab
Priority to SE8803560A priority Critical patent/SE8803560L/en
Publication of SE8803560D0 publication Critical patent/SE8803560D0/en
Publication of SE8803560L publication Critical patent/SE8803560L/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/76—Chemiluminescence; Bioluminescence

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth 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

A new method for determination of hydroxyl radicals in oxidation reactions, uses phthalic hydrazide to trap hydroxyl radicals with formation of a hydroxylated derivative, which at a later time can be oxidised with a developing agent and monitored by chemiluminescence. The reaction is useful for the determination of the progress of pulp bleaching using oxygen or hydrogen peroxide. In particular it monitors a reactive species, but does not require immediate determination of the chemiluminescence. The developing agent particularly contains peroxide anions, and may be a mixture of hydrogen peroxide and persulphate. The developer also contains carbonate to buffer at high pH and EDTA to sequester heavy metal cations. (Provisional Basic previously advised in week 9022).
SE8803560A 1988-10-07 1988-10-07 Hydroxyl radicals determn. in oxidative processes - by contacting reaction soln. with radical-binding reagent SE8803560L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8803560A SE8803560L (en) 1988-10-07 1988-10-07 Hydroxyl radicals determn. in oxidative processes - by contacting reaction soln. with radical-binding reagent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8803560A SE8803560L (en) 1988-10-07 1988-10-07 Hydroxyl radicals determn. in oxidative processes - by contacting reaction soln. with radical-binding reagent

Publications (2)

Publication Number Publication Date
SE8803560D0 SE8803560D0 (en) 1988-10-07
SE8803560L true SE8803560L (en) 1990-04-08

Family

ID=20373550

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8803560A SE8803560L (en) 1988-10-07 1988-10-07 Hydroxyl radicals determn. in oxidative processes - by contacting reaction soln. with radical-binding reagent

Country Status (1)

Country Link
SE (1) SE8803560L (en)

Also Published As

Publication number Publication date
SE8803560D0 (en) 1988-10-07

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