Im doing a second refine on gold in aqua regia. At most maybe 6 grams of gold. It was all in filter papers so i just threw the papers into a beaker added a little water, hcl, and started to do nitric doses. The papers soon fell apart. I stopped getting much of a reaction so i assumed i had all my gold in solution but couldnt tell 100 percent because of all the paper. I couldnt see any black or brown sediment in the solution though. So i put in a sulfamic acid solution to denox and there was no reaction. So i assume that since there was no excess nitric that i didnt have all the gold dissolved. Ive added probably 13 ml or so of nitric before the sulfamic so i cant believe there is more gold in there
Can i add more nitric now or will the sulfamic acid react with it and cancel it out? Should i filter and add whats in the filter to more AR to see if anything else comes out? Thanks for you help.
Can i add more nitric now or will the sulfamic acid react with it and cancel it out? Should i filter and add whats in the filter to more AR to see if anything else comes out? Thanks for you help.