Sodium sulfate is commonly used in detergents, bath additives, and formulated chemical products as a filler, stabilizer, or functional additive.
Accurate determination of sulfate concentration is essential for:
- Quality control of formulated products
- Verification of raw material composition
- Ensuring product consistency
Potentiometric titration using a lead ion-selective electrode provides a reliable and reproducible method for sulfate determination.
🔬 Why This Method Works
Sulfate ions react with lead ions to form insoluble lead sulfate:
SO₄²⁻ + Pb²⁺ → PbSO₄
The endpoint is detected using a lead ion-selective electrode, where a sharp potential change occurs at equivalence
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