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GB/T 223.67-2008Iron, steel and alloy -- Determination of sulfur content -- Methylene blue spectrophotometric method (English PDF)

钢铁及合金 硫含量的测定 次甲基蓝分光光度法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 13, 2008

Implementation date

November 1, 2008

Scope

GB/T 223.67-2008 is the English-translated version of 钢铁及合金 硫含量的测定 次甲基蓝分光光度法.

GB/T 223.67-2008 is a Chinese recommended national standard. Its English version is available from this page.

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Document preview — GB/T 223.67-2008

National Standard of the People's Republic of China

ICS
77.080.01

Contents

  • 1 Scope
  • 2 Normative references
  • 4.1 Hydrochloric acid, p approximately 1.19 g/mL.
  • 5.1.4 Absorption bottle, 20mL or 100mL single-labeled volumetric flask.
  • 7.1 Sample
  • 7.3 Determination
  • 7.3.1 Preparation of test solution
  • 7.3.2 Reduced distillation
  • 7.3.3.1 Sulfur content (mass fraction) less than or equal to 0.0010%
  • 7.3.4 Spectrophotometric measurement
  • 7.4 Calibration curve establishment
  • 7.4.1 Preparation of calibration solution
  • 7.4.2 Spectrophotometric measurement
  • 7.4.3 Calibration curve drawing
  • 8.1 Calculation method
  • 8.2 Precision
  • 10 Operating Procedure Comments
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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