Microanalysis
 | This article needs more citations. (January 2021) |
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 Slovenian-Austrian Nobel Prize winner Fritz Pregl.[1]
Methods
The most known methods used in microanalysis include:
- Most of the spectroscopy methods: ultraviolet–visible spectroscopy, infrared spectroscopy, nuclear magnetic resonance, X-ray fluorescence, Energy-dispersive X-ray spectroscopy, Wavelength-dispersive X-ray spectroscopy, and 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;
- Combustion analysis.
Advantages
Compared to normal analyses methods, microanalysis:
- Can resolve fine-scale variations in chemical elements.
- Can be used to identify the presence and distribution of different phases in materials.
- Requires less sample material and therefore can provide information on microscopic objects.
Disadvantages
- Handling of small quantities is not always simple.
- Higher accuracy of weighing is necessary (e.g. use of accurate balance).
- Sample surface preparation can have a major impact on measurement results.
References
- ^ http://nobelprize.org/nobel_prizes/chemistry/laureates/1923/index.html The Nobel Prize in Chemistry 1923. Nobelprize.org. Retrieved 2014-08-06
| Authority control databases: National |
|---|
 | This article about analytical chemistry is a stub. You can help Wikipedia by adding missing information. |
Content Disclaimer
Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.
- The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
- There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
- It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
- Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
- Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.