What is Chemical Analysis?
The resolution of a chemical compound into its proximate or ultimate parts; the determination of its elements or compound or foreign substance it may contain, thus reads in a dictionary definition.
Maybe definition is confuse, but we need to known that exact definition. I told you my point of view, when you get a some completely unknown sample or material but you need to known what it is. so the first requirement is usually to find out for certain substance are in it or not. Now a days mostly we using it to find out the impurities which present in the sample, or confirming the certain specified impurities are in the limit.
To examination of raw material is carried out to ensure that there are no unusual substances present which might be affect the manufacturing process or appear as a armful impurities in the final product.
Application of Analysis:
- Its used to ensure that the raw material uses meet certain specification and also check the quality of the final product.
- It used in many industrial to avoid the rise in pollutant in environment and health problem.
- In hospital, it used to assist in the diagnosis problem and monitoring the condition of patients.
- In Geological, it used to determine the numerous rock and soil to specified the identify the problem in area. Some analysis the sample which collect from outside Earth to find out the similarity.
What is sampling?
It is the processes in which a representative piece of material or volume need to extracted from a larger volume or amount for analysis. It is often the most difficult aspect and important for an analysis.
And while collecting the sample, we need to follow some proper safety measure because to avoid injury or environment hazard. Sample will play important role in analysis.
Analysis type:
Method of analysis can be determinate by lengthy or involve the proper reagents, accuracy of result, mainly less time and sufficient accuracy in reasonable time. Analysis selection based on
- Nature of information which required
- Size or volume of sample available
- Purpose of analytical data is required
- Macro, the analysis of quantities of 0.1 g or more
- Meso, dealing with quantities range of 10^-2 to 10^-1 g
- Micro, dealing with quantities range of 10^-3 to 10^-2 g
- Submicro, dealing with quantities range of 10^-4 to 10^-3 g
- Ultramicro, dealing with quantities less than 10^-4 g
- Quantity checked by suitable chemical reaction or change in the product.
- Using some electrical device.
- Gravimetric analysis - it is a technique through which the amount of an analyse can be measure by mass or volume.
- Titrimetric analysis - The substance to be determined is allowed to react with an appropriate reagent added to standard solution, and volume of solution needed to complete reaction is determined. Type of reaction are
- Neutralization reaction
- Complex forming reaction
- Precipitation reaction
- Oxidation - Reduction reaction
4. Electrogravimetry - it is measurement of current, voltage or resistance in relate with certain concentration of certain element or compound. Some techniques name are Voltammetry, Coulometry, Potentiometry, Conductimetry, flame photometry and Spectrophotometry.
5. Chromatography - it is a separation of mixture of substance.
It's just some information about important of analysis. If there is any mistake, then kindly check other website or book for more information.
