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What is LOSS ON IGNITION? What does LOSS ON IGNITION mean? LOSS ON IGNITION meaning \u0026 explanation
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What is LOSS ON IGNITION? What does LOSS ON IGNITION mean? LOSS ON IGNITION meaning LOSS ON IGNITION definition LOSS ON IGNITION explanation.
Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/bysa/3.0/ license.
Loss on ignition is a test used in inorganic analytical chemistry, particularly in the analysis of minerals. It consists of strongly heating (\”igniting\”) a sample of the material at a specified temperature, allowing volatile substances to escape, until its mass ceases to change. This may be done in air, or in some other reactive or inert atmosphere. The simple test typically consists of placing a few grams of the material in a tared, preignited crucible and determining its mass, placing it in a temperaturecontrolled furnace for a set time, cooling it in a controlled (e.g. waterfree, CO2free) atmosphere, and redetermining the mass. The process may be repeated to show that masschange is complete. A variant of the test in which masschange is continually monitored as temperature is changed, is thermogravimetry.
The loss on ignition is reported as part of an elemental or oxide analysis of a mineral. The volatile materials lost usually consist of \”combined water\” (hydrates and labile hydroxycompounds) and carbon dioxide from carbonates. It may be used as a quality test, commonly carried out for minerals such as iron ore. For example, the loss on ignition of a fly ash consists of contaminant unburnt fuel.
In pyroprocessing industries such as lime, calcined bauxite, refractories or cement manufacture, the loss on ignition of the raw material is roughly equivalent to the loss in mass that it will undergo in a kiln. Similarly for minerals the loss on ignition represents the actual material lost during smelting or refining in a furnace or smelter. The loss on ignition of the product indicates the extent to which the pyroprocessing was incomplete. ASTM tests are defined for limestone and lime and cement among others.
conradson carbon residue
conradson carbon residue
Lab 04 – Soil Organic matter by loss on ignition (LOI)
This video was made with the intent of aiding the learning process of SQU undergrad students of the ‘SWAE4401 Water \u0026 Nutrient Cycling in SoilPlant Environment’ course
Testing Procedure Ash
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