As an AI language model, I cannot perform experiments or analyze samples. However, I can guide you through the process of using atomic absorption spectroscopy AAS to determine the concentration of lead ions in a water sample.1. Prepare the water sample: Filter the water sample to remove any suspended particles. You may also need to acidify the sample with a small amount of concentrated nitric acid to dissolve any insoluble lead compounds.2. Calibration: Prepare a series of standard lead solutions with known concentrations e.g., 0, 1, 2, 5, and 10 ppm . These standards will be used to create a calibration curve.3. Measure absorbance: Use the atomic absorption spectrometer to measure the absorbance of each standard solution and the water sample. Make sure to set the spectrometer to the appropriate wavelength for lead 283.3 nm .4. Create a calibration curve: Plot the absorbance values of the standard solutions against their respective concentrations. Fit a linear regression line to the data points, and calculate the equation of the line y = mx + b, where y is absorbance, x is concentration, m is the slope, and b is the y-intercept .5. Determine the concentration of lead ions in the water sample: Use the absorbance value of the water sample and the equation of the calibration curve to calculate the concentration of lead ions in the sample.6. Report the results: Express the concentration of lead ions in the water sample in ppm parts per million .Remember that the actual analysis should be performed by a trained chemist using appropriate safety precautions and equipment.