Patent ID: 6977725

Claim:
An atomic absorption spectroscopy method comprising: separating quasi-monochromatic radiation into a first test beam and a first reference beam; directing the first test beam to a test area wherein the first test beam interacts with an atomized material sample for analysis of the sample; filtering the first test beam over a first spectral range; spectrally isolating a segment of the first test beam; filtering the first reference beam over a second spectral range; spectrally isolating a segment of the first reference beam; separating non-monochromatic radiation into a second test beam and a second reference beam; directing the second test beam to the test area wherein the second test beam interacts with an atomized material sample for analysis of the sample; filtering the second test beam over a third spectral range; spectrally isolating a segment of the second test beam; filtering the second reference beam over a fourth spectral range; and spectrally isolating a segment of the second reference beam.