Hello: I have a Spectronic 500 (I think) it is useful from the UV to some of the NIR. I want to quantifiy solutions of Chloroauric acid before attempting to make colloidial gold from them.
It would be very helpful if someone could tell me the frequency at which the Chloroauric acid solution will give me the most absorption? I think it would be in the red or violet regions of the chromatic spectrum, but I do not want to "tip toe" through Roy G Biv on a Spect 20 trying to find the extinction peaks.
I plan to make more Chloroauric acid using Canadian Maple Leaf gold, reagent grade Nitric and pool grade HCL. As before I will evaporate off the nitric acid. I have a Cl specific ion electrode and an Orion meter that I am going to use to determine chloride concentrations in the finial Gold colloid.
This is NOT a business, it is my own research. I worked as a Chemist for Magnaflux in the 70's and as a Technologist for Amoco til 1995.
Any comments would be helpful,