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Atomic Absorption Spectroscopy (AAS) is a quantitative analytical technique used to determine the concentration of specific metallic elements in a sample
Construct a calibration curve (absorbance vs. concentration). Determine the slope (sensitivity) and the correlation coefficient (R²). b) An unknown water sample is diluted 1:5 (1 part sample + 4 parts deionized water). The diluted solution gives an absorbance of 0.245. What is the concentration of Pb in the original undiluted sample? c) If the method detection limit (MDL) is defined as 3 × standard deviation of the blank (0.003 absorbance units), what is the minimum detectable concentration of Pb? atomic absorption spectroscopy worksheet
A soil digest is suspected to contain high nickel (Ni). Matrix effects cause signal suppression. You decide to use the method of standard additions.
AAS is primarily used to identify non-metals like Carbon and Nitrogen. Ready to create a quiz
Why is a monochromator of only moderate resolving power sufficient?
Converts the liquid sample into free atoms (typically using a flame or a graphite furnace). What is the concentration of Pb in the
1.0 = 500 x 1 x c
In AAS, a sample is first atomized, and then a beam of light is passed through the atomic vapor. The atoms in the vapor absorb light at specific wavelengths, which correspond to the energy levels of the atoms. The amount of light absorbed is measured, and the concentration of the analyte is calculated based on the absorption.