At the end it will depend on your analyte you want to determine as well as the sample. I do not know if you have take a look to this paper: Article Voltammetric techniques of analysis: the essentials

but all techniques as well as their posibilities are really well explain.

Thank you Ana Fernández-la-Villa

As mentioned above, it really is not possible to answer this question in the general sense. Also, "sensitivity" usually means slope of calibration in the context of analytical sciences and it is important to be careful to distinguish sensitivity from limit of detection and limit of quantification. For metal ions, anodic stripping voltammetry typically has the lowest limits of detection. Adsorptive stripping also shows very high performance in low concentrations. Dynamic methods,- square wave voltammetry, differential pulse voltammetry and a.c. voltammetry- usually show the best performance since they can deliver better discrimination of faradaic and capacitive charging currents, but significant efforts of optimisation are required. Multiple other factors also come into play- what temporal resolution is required, what kind of noise reduction is available? what are the EM and electrical noise like in your lab or in the field? What sort of signal processing do you have available? We provide a summary of some of these ideas in our tutorial paper and supplementary information: Article Lifting the Lid on the Potentiostat: A Beginners Guide to Un...

Dear Danny O'Hare Thank you so much for your valuable answer

Square wave voltammetry (SWV) is usually the best choice, specially when you have an electrochemically reversible analyte.

Consider differential pulse voltammetry (DPV) at the same time, as the alternative.

Thank you Maedeh Akhoundian