pöördpotentsiomeetrid

Pöördpotentsiomeetrid, also known as reciprocal potentiometric titrations, are a type of analytical technique used to determine the concentration of a substance in a solution. This method is particularly useful for analyzing weak acids and bases, as well as certain metal ions. The process involves the use of a potentiometric sensor, typically a glass electrode, to measure the potential difference across a membrane that responds to changes in hydrogen ion concentration.

In a reciprocal potentiometric titration, a known volume of a standard solution is added to the sample solution in small increments. The potential difference is measured after each addition, and the data is plotted to determine the equivalence point, where the number of moles of the titrant equals the number of moles of the analyte. The reciprocal of the potential difference is then plotted against the volume of titrant added, resulting in a linear relationship that can be used to calculate the concentration of the analyte.

This technique offers several advantages, including high precision and accuracy, as well as the ability to analyze a wide range of substances. However, it requires careful calibration of the potentiometric sensor and careful control of experimental conditions to ensure reliable results. Pöördpotentsiomeetrid is widely used in various fields, including environmental analysis, pharmaceuticals, and food science, due to its versatility and sensitivity.