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    AS/NZS 1050.30:1994

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    Methods for the analysis of iron and steel Determination of boron content - Curcumin spectrophotometric method

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Withdrawn date:  08-17-2018

    Language(s):  English

    Published date:  08-08-1994

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    3 - AS/NZS 1050.30:1994 METHODS FOR THE ANALYSIS OF IRON AND STEEL - DETERMINATION OF BORON CONTENT - CURCUMIN SPECTROPHOTOMETRIC
    4 - PREFACE
    5 - CONTENTS
    7 - 1 Scope
    7 - 2 Normative references
    7 - 3 Principle
    7 - 4 Reagents
    7 - 4.1 Pure iron
    7 - 4.2 Sodium hypophosphite monohydrate.
    7 - 4.3 Hydrochloric acid
    7 - 4.4 Nitric acid.
    7 - 4.5 Sulfuric acid
    7 - 4.6 Orthophosphoric acid
    7 - 4.7 Acetic acid
    8 - 4.8 Mixture of acetic and sulfuric acids.
    8 - 4.9 Acetic buffer solution.
    8 - 4.10 Sodium fluoride
    8 - 4.11 Boron
    8 - 4.12 Curcumin
    8 - 5 Apparatus
    8 - 5.1 Quartz beakers with quartz covers
    8 - 5.2 Polypropylene or polytetrafluoroethylene volumetric flasks
    8 - 5.3 Polypropylene or polytetrafluoroethylene bottle
    8 - 5.4 Aluminium alloy block
    8 - 5.5 Spectrophotometer
    8 - 6 Sampling
    8 - 7 Procedure
    8 - 7.1 Test portion
    9 - 7.2 Blank test 7.3.2 Formation of the coloured complex
    9 - 7.2 Blank test
    9 - 7.3 Determination
    9 - 7.3.1 Preparation of the test solution
    9 - 7.3.2 Formation of the coloured complex
    9 - 7.3.3 Preparation of the compensating solution
    9 - 7.3.4 Spectrophotometric measurements
    10 - 7.4 Establishment of the calibration graph
    10 - 7.4.1 Preparation of calibration solutions
    10 - 7.4.2 Spectrophotometric measurements
    10 - 7.4.3 Plotting the calibration graph
    10 - 8 Expression of results
    10 - 8.1 Calculation of the net absorbance
    10 - 8.2 Calculation of the boron content
    11 - 8.3 Precision
    11 - 9 Test report
    12 - Annex A - Examples of aluminium alloy blocks
    14 - Annex B - Additional information on the international co-operative tests
    15 - Annex C - Graphical representation of precision data
    16 - Annex D - Additional precision tests conducted by European countries

    Abstract - (Show below) - (Hide below)

    Specifies a spectrophotometric method for the determination of boron content between 0.0005 percent and 0.01 percent in steel. This Standard is technically identical with and reproduced from ISO 10153:1991.

    Scope - (Show below) - (Hide below)

    This International Standard specifies a curcumin spectrophotometric method for the determination of boron content in steel.

    General Product Information - (Show below) - (Hide below)

    Committee CH-010
    Document Type Standard
    Publisher Standards Australia
    Status Withdrawn
    Supersedes

    History - (Show below) - (Hide below)

    First published as AS 1050.30-1978.Jointly revised and redesignated as Joint Standard AS/NZS 1050.30:1994. First published as AS 1050.30-1978. Jointly revised and redesignated as Joint Standard AS/NZS 1050.30:1994.

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS 2164-2003 Laboratory glassware - One-mark volumetric flasks
    AS 1213-1982 Iron and steel - Methods of sampling
    AS 2165-1996 Laboratory glassware - Burettes
    AS 2850-1986 Chemical analysis - Interlaboratory test programs - For determining precision of analytical method(s) - Guide to the planning and conduct
    AS 2164-1995 Laboratory glassware - One-mark volumetric flasks
    AS 2166-1995 One-mark pipettes
    AS 2166-2002 Laboratory glassware - One-mark pipettes

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