Cyclic voltammetry of heavy metal/amino acid in Jordanian water

Abstract

Amino acids make up about 20% of our bodies or about 50% of our solid body mass; they are the next largest component in our bodies after water. The body of a person who weighing 50 kg has about 10 kg of amino acids in their body make up. The pH at the equivalence point in titrations of weak acids or weak bases, on the other hand, is more or less than 7.0, respectively. In titrations of weak acids and weak bases, the pH changes more slowly until the equivalence point is reached than in titrations of strong acids and strong bases. The pH at the midpoint, which is midway between the weak acid and the weak base on the titration curve, is equal to the pKa of the weak acid or the pKb of the weak base. As a result, titration methods can be used to measure a weak acid's concentration as well as its pKa (or pKb) (or a weak base). Acid-base indicators are substances that change color when exposed to a specific pH. They are usually weak acids or bases whose color changes correspond to the indicator's deprotonation or protonation.