Ninhydrin's Role in Fingerprint Detection
Ninhydrin is a chemical reagent commonly used in forensic science to detect latent fingerprints.
Latent fingerprints are invisible marks left by the skin's residue. This residue contains various substances, including amino acids.
Ninhydrin Reaction Mechanism
The effectiveness of Ninhydrin in developing fingerprints stems from its specific chemical reaction.
- Ninhydrin reacts primarily with amino acids, which are present in the sweat and oils deposited by fingers.
- This reaction typically occurs upon heating and results in the formation of a colored product, known as Ruhemann's purple.
- The appearance of this purple color makes the latent fingerprint visible.
Therefore, Ninhydrin reacts with amino acids to develop latent fingerprints.
Important Questions from Analytical Chemistry
Select the correct statement from the following options.
XRD peaks are produced by ________ of a monochromatic beams of X-rays scattered at a specific angles from each set of lattice planes in a sample.
Which is true for SC-2 clean procedure for initial cleaning of wafer IC fabrication?
X-ray diffraction utilises electrons of energy range _______.
Ninhydrin is used as detecting agent for amino acid in chromatography because ___________.
