GB1095977A - Methods of measuring phosphite contents - Google Patents

Methods of measuring phosphite contents

Info

Publication number
GB1095977A
GB1095977A GB44536/65A GB4453665A GB1095977A GB 1095977 A GB1095977 A GB 1095977A GB 44536/65 A GB44536/65 A GB 44536/65A GB 4453665 A GB4453665 A GB 4453665A GB 1095977 A GB1095977 A GB 1095977A
Authority
GB
United Kingdom
Prior art keywords
acid
specified
solution
phosphite
measuring
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.)
Expired
Application number
GB44536/65A
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1095977A publication Critical patent/GB1095977A/en
Expired 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
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/16—Phosphorus containing

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Biophysics (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)
  • Chemically Coating (AREA)

Abstract

Phosphites may be determined in solution in the presence of hypophosphites by mixing with an acidic solution containing a non-oxidising, non-reducing acid and an oxi-anion with a central metal atom capable of forming a heteropoly acid with phosphites, adding a reducing agent which reacts more readily with hypophosphite than with phosphite, whereby a coloured solution is formed, and measuring the colour intensity. Sufficient acid to prevent hypophosphite interference should be present. Specified anions are tungstate, chromate, vanadate and, as exemplified, molybdate. Specified reducing agents are ascorbic acid, isoascrobic acid, hydroquinone and p-methylaminophonol sulphate. The acid solution is generally above 4N, and sulphuric acid is specified.
GB44536/65A 1964-11-02 1965-10-21 Methods of measuring phosphite contents Expired GB1095977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US40815164A 1964-11-02 1964-11-02

Publications (1)

Publication Number Publication Date
GB1095977A true GB1095977A (en) 1967-12-20

Family

ID=23615062

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44536/65A Expired GB1095977A (en) 1964-11-02 1965-10-21 Methods of measuring phosphite contents

Country Status (4)

Country Link
US (1) US3425805A (en)
AT (1) AT269079B (en)
DE (1) DE1598608A1 (en)
GB (1) GB1095977A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3547586A (en) * 1967-06-05 1970-12-15 Jerry W Denney Inorganic phosphate assay,and reagents therefor
US3816075A (en) * 1972-11-28 1974-06-11 Atomic Energy Commission Determination of hypophosphite ion concentration
DE3476585D1 (en) * 1984-04-09 1989-03-09 Beckman Instruments Inc Reagent for the determination of inorganic phosphate and use thereof in a rate analysis method
DE3686229T2 (en) * 1985-08-20 1993-03-11 Kawasaki Steel Co METHOD FOR DETECTING PHOSPHORIC DETERMINATIONS IN METAL MATERIAL.
US4843015A (en) * 1987-11-05 1989-06-27 Westvaco Corporation Method for determining volatile phosphorus in carbon

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697651A (en) * 1953-03-09 1954-12-21 Gen Am Transport Colorimetric methods of determining hypophosphite contents of solutions

Also Published As

Publication number Publication date
AT269079B (en) 1969-03-10
DE1598608A1 (en) 1970-04-16
US3425805A (en) 1969-02-04

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