please read the attach publications, I hope the publications can help you.

Dr. Gunawan

Indeed a lot of thanks for your co operation and your nice attachment. I also surprised the 2nd attachment paper yesterday night I just downloaded and read the only abstract and post the question in the research gate but over the night you helped me a lot  by highlighting the important text. really thanks.

by using different concentration of same compound I already run my NMR and got the peak but facing problem in standard curve preparation for selection the appropriate parameter. Initially I used only the height abundance but I was not satisfied.

There are several techniques for quant. analysis using 1H NMR. Basically you need GOOD integrals from NMR spectra with BEST possible magnetic and digital resolution. If you integrate a singlet, you will need an intervall surrounding symmetrically this singlet by a range of 64 times your spectral halfwidth to be accurate to 1%. This integral can be evaluated by addition techniques using your compound wanted or reference compounds.

Dear Abu,  you're very welcome

I have other Guidance for Q NMR from Eurolab, maybe you need it

Best regards

Dear DR. Gunawan

Really thanks to you for your still suggestion. I optimistic it will help me.