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Sulphuric Acid on the WebTM Technical Manual DKL Engineering, Inc.

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Sulphuric Acid on the Web

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Handbook of Sulphuric Acid Manufacturing
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Sulphuric Acid Decolourization
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Process Engineering Data Sheets - PEDS
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Analytical Procedures - Iron
February 11, 2002

Introduction
Equipment
Reagents
Procedure
Associated Links

Introduction

This rapid method of iron determination, is quite suitable for sulphuric acid routine analysis.  It is based on iron-complex formation and its spectrophotometric determination.

Equipment

Reagents

 

Procedure

Place 50 ml of water in a 100 ml flask, add gently 10 g of sulphuric acid and 5 ml of thioglycolic acid.  After cooling, make a strong alkaline environment with NH4OH and make up to the mark.  Read this coloured solution in the spectrometer at 530 - 540 nm.

The iron concentration is determined in comparison with a calibration curve, previously plotted with a few iron standard solutions.

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