yar said:pu_239 many members here are trying to give you guidence in what you are endeavoring to do. I gave you a linq regarding AP which should have led you to other linqs on that topic. This topic has been covered more than most and any questions you have will be answered if you just read. You are making this more difficult than it has to be.
I have no academic scuence backround beaides what I have learned through high school. Anything I have learned regarding recovery and refining has come from reading Hoke and reading here on this forum. I work in a profession where things are right or wrong, black or white, is or is not. I can not deviate from the facts that are presented to me or lives may be lost. I approach my study's here the same way and have results to prove that. If you devitae from what has been proven here time and again you will have more problems than results. I have been here almost 2 years and I don't think I have asked as many questions as you have in your short time here.
I understand what you're saying, as the panther lady said as well. Do what has been proven, once you have got that down you can start to experiment. I agree with that statement if you're venturing off in a field you have no experience in. This is just general chemistry, which i have done many times. As I said before, the "techniques" used are more of an art form. As I think about it, the techniques used are needed due to lack of proper equipment. With proper equipment it's just general chemistry.
I believe the A.P. method as i said before, is for people who dn't have much experience in chemistry(if at all). I do agree the A.P. method if down as followed, will limit problems. I see it as a safety net. I do have some NaNO3 and I want to make the poor mans aqua regia correctly. If I had my pump set up, i'd just make my own nitric acid which will be fuming nitric acid, which is incredibly strong and intense. It literally has fumes coming out of it. This obviously is not for the inexperienced. It can be very dangerous and it's extremely corrosive.
From my experience, I am 90% sure I can extract gold from the gold fingers from start to finish(powdered gold) within 2-3hrs total time with a high yield. I will just need the proper equipment. A centrifuge would be a god send, that's why so many people wait "for things to settle" in a centrifuge you don't have to wait a day, it can be done in 5mins if not less. I am planning to make a centrifuge. For me, the A.P. method doesn't make much sense. For beginners/inexperienced people, i think it's good way to learn and it's less risky.
People talked about dissolving gold in the CuCl2 solution. I crashed out the copper, and tested for AuCl4-, results came back negative. unless the gold is in a different form, there is no gold in my solution. As I said, I will have to look at the reactions more deeply, at this moment I don't have much time to do so, have a test on tuesday, then 2 of them the following week(finals). After all that is done, i'll look at each reaction in depth.