Titration Methods for Calcium and Magnesium Analysis in Dolomite and Limestone

A Guide to Precise Determination Using EDTA-Na2, EGTA, and DX240Ca+2-ISE

This application note provides a comprehensive guide to evaluate calcium and magnesium content in dolomite and limestone ores by three titration methods.

By downloading this application package, you will receive a PDF of the application note as well as the required data for the LabX™ titration software method.

 

What Are the Common Applications of Limestone and Dolomite Ores?

Limestone and dolomite ores are commonly used in the construction and building industries due to their hardness and density. They are used in cement, mortar, alloy making, and metal extraction. High-grade dolomite is also used to produce metallic magnesium and magnesium compounds.

Why Is It Important to Determine the Calcium and Magnesium Content in Ores?

Determining calcium and magnesium content in ores is important because these metals are heavily extracted from ores, and their suitability for specific industrial applications is based on their purity. Knowing the calcium and magnesium content in ores is critical for determining the quality of the material and whether it is suitable for a specific application.

What Is the Chemistry behind the Titration Methods Used to Determine Calcium and Magnesium Content in Ores?

The chemistry involves the reaction between calcium or magnesium ions and the titrant (EDTA-Na2 or EGTA) to form a complex, which liberates an indicator. The color change of the indicator is monitored using a Phototrode™ or DX240Ca+2-ISE, and the amount of titrant used to reach the equivalence point is used to determine the calcium or magnesium content in the sample.

Titration Methods for Determination of Calcium and Magnesium in Dolomite and Limestone
Titration Methods for Determination of Calcium and Magnesium in Dolomite and Limestone