Absorption Spectroscopy
In News
- Researchers from IIT Madras and IISER Kolkata have developed a method to detect minute quantities of chemicals in solution.
- They use a variation of absorption spectroscopy that surpasses the systemic limits imposed by conventional absorption spectroscopy.
- With this technique, they can, in principle, illuminate the insides of cells and detect minuscule quantities of substances present there.
About
- Absorption spectroscopy is a tool to detect the presence of elements in a medium. Light is shone on the sample, and after it passes through the sample is examined using a spectroscope.
- Usually in absorption spectroscopy, the principle used is that light because of its wavelike nature, shows diffraction patterns, that is, dark and light fringes, when it scatters off any object.
- A related concept called the Abbe criterion sets a natural limit on the size of the object being studied.