Microanalysis: Difference between revisions
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{{Unreferenced stub|auto=yes|date=December 2009}} |
{{Unreferenced stub|auto=yes|date=December 2009}} |
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'''Microanalysis''' is the [[chemistry|chemical]] identification and [[Quantitative analysis (chemistry)|quantitative analysis]] of very small amounts of [[chemical substance]]s (generally less than 10 mg or 1 ml) or very small surfaces of material (generally less than 1 cm<sup>2</sup>). One of the pioneers in the microanalysis of [[chemical element]]s was the Austrian [[Nobel Prize]] winner [[Fritz Pregl]]. |
'''Microanalysis''' is the [[chemistry|chemical]] identification and [[Quantitative analysis (chemistry)|quantitative analysis]] of very small amounts of [[chemical substance]]s (generally less than 10 mg or 1 ml) or very small surfaces of material (generally less than 1 cm<sup>2</sup>). One of the pioneers in the microanalysis of [[chemical element]]s was the Austrian [[Nobel Prize]] winner [[Fritz Pregl]]<ref>http://nobelprize.org/nobel_prizes/chemistry/laureates/1923/index.html ''The Nobel Prize in Chemistry 1923''. Nobelprize.org. Retrieved 2014-08-06</ref>. |
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== Methods == |
== Methods == |
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* Handling of small quantities is not always simple. |
* Handling of small quantities is not always simple. |
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* Higher accuracy of weighing is necessary (e.g. use of accurate [[Weighing scale#Analytical balance|balance]]). |
* Higher accuracy of weighing is necessary (e.g. use of accurate [[Weighing scale#Analytical balance|balance]]). |
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== References == |
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{{reflist}} |
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[[Category:Analytical chemistry]] |
[[Category:Analytical chemistry]] |
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Revision as of 15:26, 22 December 2016
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Microanalysis is the chemical identification and quantitative analysis of very small amounts of chemical substances (generally less than 10 mg or 1 ml) or very small surfaces of material (generally less than 1 cm2). One of the pioneers in the microanalysis of chemical elements was the Austrian Nobel Prize winner Fritz Pregl[1].
Methods
The most known methods used in microanalysis are:
- Most of the spectroscopy methods: ultraviolet–visible spectroscopy, infrared spectroscopy, nuclear magnetic resonance, X-ray fluorescence also mass spectrometry
- Most of the chromatography methods : high-performance liquid chromatography, Gel permeation chromatography;
- Some thermal analysis methods: differential scanning calorimetry, Thermogravimetric analysis;
- Electrophoresis;
- Field flow fractionation;
- X-ray diffraction.
Advantages
Compared to normal analyses methods, microanalysis:
- Requires less time for preparation
- Requires less sample and solvent and thus produces less waste and is more cost effective.
Disadvantages
- Handling of small quantities is not always simple.
- Higher accuracy of weighing is necessary (e.g. use of accurate balance).
References
- ^ http://nobelprize.org/nobel_prizes/chemistry/laureates/1923/index.html The Nobel Prize in Chemistry 1923. Nobelprize.org. Retrieved 2014-08-06
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