UV spectroscopy is concerned with ranges from 190 to 370 nm. Compound which are colourless absorb radiation in UV range. In both UV as well as visible spectroscopy only the valence electrons absorb the energy there by molecule undergoes transition from ground state to exited state. This absorbance is characteristic and depends on the nature of the electron present. The intensity of the electron depends on the concentration and path length as given by Lambert beer’s law.
Lambert Beer’s law:
According to Beer’s law: The intensity of a beam of monochromatic light decreases exponentially with increase in the concentration of absorbing species arithmetically.
According to Lambert’s law: The rate of decrease of intensity (monochromatic light) with the thickness pf medium is directly proportional to the intensity of incident light A = ε . c . t Where A is absorbance (no units, since A = log10 P0 / P ) ε is the molar absorbtivity with units of L mol-1 cm-1 t is the path length of the sample - that is, the path length of the cuvette in which the sample is contained. We will express this measurement in centimetres. c is the concentration of the compound in solution, expressed in mol L-1
INTRODUCTION OF PARACETAMOL :
Paracetamol (325mg), a non-opioid and non-salicylate analgesic. It is indicated for the treatment of moderate to severe pain.
Name Acetaminophen
Drug Type Small Molecule
Approved
Description Analgesic antipyretic derivative of acetanilide. It has weak anti-inflammatory properties and is used as a common analgesic, but may cause liver, blood cell, and kidney damage.
Synonyms Acetaminofen
Paracetamolo
Paracetamol
Brand Taken Crocin - Remidex Pharma
Calpol - GlaxoSmithKline
P-500 - Apex Labs
Pyrigesic - East India Pharmaceuticals
Pacimol - Ipca Labs
Paracin