Ultraviolet Spectroscopy
Ultraviolet Spectroscopy — An analytical technique measuring UV light absorption by peptides, used for concentration determination via Beer-Lambert law at 214nm or 280nm.
What Is UV Spectroscopy?
Ultraviolet spectroscopy measures the absorption of UV light (190-400 nm) by peptides. UV detection is the primary method for monitoring peptide HPLC separations and determining concentration using the Beer-Lambert law.
Key Wavelengths
- 214 nm: Peptide bond absorption. Universal peptide detection. Most sensitive
- 220 nm: Alternative to 214 nm with slightly less sensitivity but less interference
- 280 nm: Trp (ε = 5,500) and Tyr (ε = 1,490) absorption. Concentration by A280
- 205 nm: Total protein/peptide estimation where aromatic content varies
Frequently Asked Questions
What is Ultraviolet Spectroscopy?
An analytical technique measuring UV light absorption by peptides, used for concentration determination via Beer-Lambert law at 214nm or 280nm.
Why is Ultraviolet Spectroscopy important in peptide research?
Ultraviolet Spectroscopy is a fundamental concept in analytical as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.
Authority Sources
- Ultraviolet Spectroscopy on Wikipedia
- Search Ultraviolet Spectroscopy on PubChem (NIH)
- Research articles on ScienceDirect