I did EDX for my nanoparticle samples. It contain peak for Cl, C, Na, O and Ag . What is the meaning of this peaks. Where does the other elements come from? Kindly provide the interpretation reference files.
It might be helpful to know which type of nanoparticles you wanted to obtain. Besides, it seems like you may have some NaCl salt and Ag-NPs, likely capped with some organic ligand (?)
Perhaps you should try to clean your nanoparticles from other side products like salts (e.g. by precipitation and re-dispersion after centrifuge)...
Jeeva Rathinam Please provide more information on your nanoparticles and their form (powder, liquid etc) plus the mode of preparation. Please also post the actual EDX results. Oxygen is in everything from air to moisture/water. Carbon is on every surface due to CO2 absorption from the air. Why did you prefer EDX to EXCA/XPS which is the preferred technique in nanoparticle characterization?
The information you provided is insufficient to understand which elements are desirable and which are not. As can be interpreted, you have Ag nanoparticles. But are they functionalized or modified? Have they been dispersed in a solvent and then dried completely before analysis?
As mentioned by others, C and O are pretty common to appear during EDX measurements. You need to know how much is the elemental composition to say if it is coming from your material or not.