Dear Deep Tripathi thank you for posting this interesting technical question. For use in the investigation of concrete specimens, I would say that the concentration of ammonium sulfate aqueous solution should be given in % or g/liter. For example, please have a look at the following relevant article in which the authors used a 5% ammonium sulfate solution:

Resistance of self-consolidating concrete to ammonium sulphate attack

Article Resistance of self-consolidating concrete to ammonium sulphate attack

Also please see the following review article about this topic:

A review on the deterioration of cement-based materials in ammonium salt solutions

Article A review on the deterioration of cement-based materials in a...

Both articles are freely available as public full texts on RG.

For making a 5% ammonium sulfate solution (weight / weight) you would mix 5 g of ammonium sulfate with 95 ml (= 95 g) of water. Expressing the concentration in ppm is not useful here, as the concentrations are generally too high.

I hope this helps. Good luck with your work and best wishes, Frank Edelmann

Thank you sir @Frank for you valuable answer.

I want know one more thing that if we want to make sulphate solution as marine environment (sulphate concentration in sea water ranges from 0.55 to 4 g/litre on average 2 g/litre, if I am right.) from Ammonium sulphate salt.

Then what will be the procedure to adopt sulphate in % and g/litre?

Thank you.

The correct concentrations for analytical usage are : Normality, Molarity, molality, ppm

The concettations usage for synthesis purposes : %. g/lit.

Dear Deep Tripathi thank you for your kind response and question. For the use of ammonium sulfate solution as marine environment you can use any ofcthe common concentration such as mg/L, g/L or mol/L. For typical refences in this field please have a look at the following useful RG links:

Evaluation of Lethal concentration of Ammonium Sulphate to freshwater fish Mystus Vitatus (BLOCH)

Article Evaluation of Lethal concentration of Ammonium Sulphate to f...

Here the authors use the unit mg/L.

Corrosion mechanism of copper immersed in ammonium sulfate solution

Article Corrosion mechanism of copper immersed in ammonium sulfate solution

In this study the authors use the unit mol/L.

When analyzing small concentrations, the unit ppm is also quite common:

Ammonium-Salt Formation and Catalyst Deactivation in the SCR System for a Marine Diesel Engine

(please see attached pdf file)

Don't get confused by these different units. When it comes to writing a new manuscript, it is most important that you use the units consistently, i.e. don't switch between ppm and mg/L etc.

Please stay safe and healthy!

Thank you sir for your response @Frank.

Dear sir @Frank, Can you please explain, What's the effect on alkalinity of concrete with increasing ammonium sulphate salt concentration in solution?

Can anyone please explain, What's the effect on alkalinity (pH) of concrete with increasing ammonium sulphate salt concentration in solution? With supporting documents...