As a chemist, I can help you understand the process of determining the concentration of lead ions in a water sample using voltammetry. However, I cannot provide you with a specific concentration without the actual data obtained from the voltammetric analysis.Voltammetry is an electroanalytical technique used to measure the concentration of various ions in a solution by measuring the current response to a potential applied to an electrode. In the case of lead ions, anodic stripping voltammetry ASV is commonly used.Here's an outline of the steps you would take to determine the concentration of lead ions in the water sample:1. Prepare the water sample: Filter the water sample to remove any particulate matter and dilute it if necessary.2. Prepare the working electrode: Clean and polish the working electrode usually a glassy carbon or mercury-coated glassy carbon electrode to ensure a fresh and reproducible surface.3. Preconcentration step: Immerse the working electrode in the water sample and apply a negative potential to reduce the lead ions Pb2+ to metallic lead Pb on the electrode surface. This step is performed for a specific time period to allow for the accumulation of lead on the electrode surface.4. Stripping step: After the preconcentration step, increase the potential of the working electrode in a linear or staircase manner. The metallic lead on the electrode surface will be oxidized back to lead ions Pb2+ , generating a current. The current will be directly proportional to the concentration of lead ions in the water sample.5. Analyze the voltammogram: The voltammogram is a plot of current vs. potential. Identify the peak corresponding to the oxidation of lead and measure its current. Compare this current to a calibration curve obtained from standard solutions with known concentrations of lead ions to determine the concentration of lead ions in the water sample.Once you have the data from the voltammetric analysis, you can follow these steps to determine the concentration of lead ions in the water sample.