The last curve shows that Cu is relatively well complexed in the Santa Ana River water. Speciation calculations, performed using the entire chemical analysis of the water, should reveal the relative proportion that can be imputed to organic ligands. Now, let's compare the two electochemical method: voltammetry and the potentiometry.
- What is the main difference between these two methods? Do they measure the same complexes?
- What are the advantages/disavantages of these two methods to determine aqueous analytical speciations?
- Discuss the detection limits of these two methods.