1. QUANTITATIVE ANALYSIS Determining amount of ions present in samples

2. Atomic Absorption Spectroscopy

3. Cathode lamp

4. AAS Absorbance Transmittance

5. AAS Standard Solutions Prepare a series of dilutions of a standard solution (with known concentration) containing the metal to be analysed Measure and record the absorbance for at least 3 different concentrations construct a calibration graph Next, measure the absorbance of the sample solution (unknown concentration) Use the calibration graph to interpolate its concentration value

6. Calibration graph A control blank (containing only water) is used; zero concentration = zero absorbance