A system and method employing optical disc drives for quantitative
analysis of physical, chemical and biochemical parameters are provided.
The system including a disc drive for supporting and rotating an optical
disc including at least one sensor spot; a light source for directing
light onto the sensor spot; at least one optical pickup for detecting
light transmitted from the sensor spot, the transmitted light being
indicative of a concentration of a compound; and an analog-to-digital
converter for quantifying an intensity of the transmitted light. The
method comprising the steps of preparing the optical disc with a
plurality of sensor spots, the sensor spots being responsive to a
compound; exposing the optical disc to a fluid; measuring intensity of
transmitted light from at least one of the plurality of sensor spots; and
correlating the measured intensity of transmitted light to an amount of
compound exposed to the optical disc.