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CHEMICAL ANALYSIS

 

It is the process of determining qualitative or quantitative chemical information.

Chemical analysis is done on a bulk of material to confirm the material composition. There are several techniques that can be used to check composition, and the choice of which to use often depends on accessibility and sample type. Chemical analysis is conducted for a wide range of purposes from material identification and characterization to quality control monitoring. Care should be taken not to contaminate samples taken for chemical analysis by surface residue or cutting instruments.

 

Chemical composition analysis of the material (along with any coatings, etc.) will determine whether the specified materials were used during fabrication. Chemical analysis can also be performed on corrosive products or certain defects such as inclusions to determine their source.

 

Wet Chemical Analysis - Chemical analysis of or involving chemical solutions. Techniques include titration and precipitation reactions.

 

Titration - A type of volumetric analysis in which certain amounts of a standardized solution are added to a solution containing an unknown component until a specific reaction, such as a color change or precipitate, occurs. The method is easy to use if the quantitative relationship between two reacting substances is known. The method is particularly well suited to acid-base and oxidation-reduction reactions.

 

Chemical Precipitation Process - Particulate precipitation in which solid or solid particles are separated out of an aqueous solution.

 

Few of the Chemical analytical techniques are as follows: -

  • OPTICAL EMISSION SPECTROMETRY (OES)
  • ATOMIC ABSORPTION SPECTROMETRY (AAS)
  • INDUCTIVELY COUPLED PLASMA (ICP)
  • GLOW DISCHARGE SPECTROMETRY (GDS)
  • X-RAY FLUORESCENCE (XRF)
 
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