A method, comprising: emitting a light beam from a light source to a component in an absorption cell, wherein the light beam comprises a plurality of beams (118, 120) having different wavelengths; generating a first plurality of response signals in the absorption cell corresponding to the plurality of beams (118,120) having different wavelengths when the component is maintained at a first ambient condition; and generating a second plurality of response signals in the absorption cell corresponding to the plurality of beams (118,120) having different wavelengths when the component is maintained at a second ambient condition; detecting the first plurality of response signals and the second plurality of response signals from the absorption cell by a photo detector coupled to the absorption cell; and determining a concentration of the component based on the pluralities of response signals (122,124) by processing the detected first and second pluralities of response signals (122, 124) to generate a graph, the x-axis thereof representative of a response signal corresponding to a beam having a first wavelength; and the y-axis representative of a response signal corresponding to a beam having a second wavelength; the graph comprising a plurality of curves (506, 508, 510), each curve (506, 508, 510) being non-intersecting, each curve (506, 508, 510) corresponding to a distinct ambient condition, and each curve (506, 508, 510) representing a range of concentrations of the component as a function of response signals from the light beams (118, 120) having first and second wavelengths, wherein each point on a curve (506, 508, 510) corresponds to a unique combination of the response signals corresponding to the beams (118, 120) having first and second wavelengths; determining from the graph, a first point on a first curve thereon representative of a particular concentration of the component at the first ambient condition and a second point on a second curve representative of the same concentration of the component at the second ambient condition, wherein the slope of a line joining the first and second points is representative of the concentration of the component; and determining the concentration of the component based on the slope value. emitting a light beam from a light source to a component in an absorption cell, wherein the light beam comprises a plurality of beams (118, 120) having different wavelengths; generating a first plurality of response signals in the absorption cell corresponding to the plurality of beams (118,120) having different wavelengths when the component is maintained at a first ambient condition; and generating a second plurality of response signals in the absorption cell corresponding to the plurality of beams (118,120) having different wavelengths when the component is maintained at a second ambient condition; detecting the first plurality of response signals and the second plurality of response signals from the absorption cell by a photo detector coupled to the absorption cell; and determining a concentration of the component based on the pluralities of response signals (122,124) by processing the detected first and second pluralities of response signals (122, 124) to generate a graph, the x-axis thereof representative of a response signal corresponding to a beam having a first wavelength; and the y-axis representative of a response signal corresponding to a beam having a second wavelength; the graph comprising a plurality of curves (506, 508, 510), each curve (506, 508, 510) being non-intersecting, each curve (506, 508, 510) corresponding to a distinct ambient condition, and each curve (506, 508, 510) representing a range of concentrations of the component as a function of response signals from the light beams (118, 120) having first and second wavelengths, wherein each point on a curve (506, 508, 510) corresponds to a unique combination of the response signals corresponding to the beams (118, 120) having first and second wavelengths; determining from the graph, a first point on a first curve thereon representative of a particular concentration of the component at the first ambient condition and a second point on a second curve representative of the same concentration of the component at the second ambient condition, wherein the slope of a line joining the first and second points is representative of the concentration of the component; and determining the concentration of the component based on the slope value.