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Explain in detail anodic stripping voltammetry.(short with headings)
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## Anodic Stripping Voltammetry
1. Principle:
Anodic stripping voltammetry (ASV) is an electroanalytical technique used to determine the concentration of trace metals in a solution. It involves two steps:
Electrodeposition: The analyte metal ions are deposited onto a working electrode (usually a hanging mercury drop electrode or a thin film electrode) by applying a negative potential. This step concentrates the analyte on the electrode surface.
Anodic Stripping: The potential is then scanned in a positive direction, causing the deposited metal to oxidize and dissolve back into the solution. The oxidation current is measured, and its magnitude is proportional to the concentration of the analyte metal.
2. Advantages:
High sensitivity: ASV is highly sensitive, allowing the detection of trace metals in the parts per billion (ppb) range.
Versatility: It can be used to analyze a wide variety of metal ions in various matrices.
Relatively simple: ASV is a relatively straightforward technique that can be implemented in many laboratories.
3. Applications:
ASV is widely used in environmental monitoring, food analysis, clinical chemistry, and industrial quality control. It is particularly valuable for analyzing heavy metals, such as lead, cadmium, mercury, and copper, due to their toxicity and environmental significance.
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