Hi I suggest, add some water (different Ph), after that check erosion.

Well,

Calculation of Dissolve loads throughout discharge measurements of river and/or stream and dissolved concentration can determine the leaching(chemical weathering) of soils within the catchment area of streams.

Regards

Dear Dr Shojaei, thanks for your answer. But, can you expatiate your idea?

Thanks Dr Hussien!

Are there specific chemical parameters (aside hydrogen ion) that define or influence the leaching effect (chemical weathering potency) of water?

Well,

Mainly TDS, which including all dissolve ions(Cations and Anions)and trace elements.

Regards

OK. Many thanks Dr Hussien

Try an Emerson Aggregate Test with different salinity concentrations. Cheap, quick, simple.

Yes, TDS is important factor in determining the ions solubility in water, and pH , ions (cations and anions) and trace metals.

you also have to study the mineralogy of the soil