Decided to check if 9 carat gold scrap jewellery on eBay really contains Gold. Bought a little more than 1 gram and quickly checked in the lab. Enjoy the video!
Пікірлер: 26
@gavinclark68152 жыл бұрын
Thank you for the video, I just discovered your channel and am trying to get caught up on all of your uploads. I was curious as to why you use Iron (II) sulfate to precipitate gold, as many other videos I've seen use sodium metabisulfite. Thanks again for taking the time to produce such informative, concise videos.
@escrapchannel2 жыл бұрын
Hi, there are many reagents that can reduce gold from solution. One of the advantages of using Fe(II) to Fe(III) reaction is that there is no bad smell like with sodium metabisulfite.
@Sergey-Master-LOMaster2 жыл бұрын
More good and rich material 🤝👍
@escrapchannel2 жыл бұрын
👍
@Zlo-USSR2 жыл бұрын
good result, friend👍
@escrapchannel2 жыл бұрын
Thanks!
@MrStevenDeer Жыл бұрын
Question. why wouldn't you remove the base metals with nitric before going to AR?
@escrapchannel Жыл бұрын
Hi, in general I should inquartate gold to below 8 karats and then use nitric acid. That’s best method for gold scrap. I agree with you. In this video I tried aqua Regia directly as I was not sure if I have silver in the alloys. Unfortunately silver was present and it blocked complete dissolving.
@okhamradio3 жыл бұрын
Nice things👍
@escrapchannel3 жыл бұрын
Thanks!
@user-nz3hz4gx6u3 жыл бұрын
Привет дружище, как всегда было интересно посмотреть твою работу 👍🎃
@escrapchannel3 жыл бұрын
Спасибо!
@platinumskies79683 жыл бұрын
You should have started with nitric to leech the other metals then used AR the brownish mud in the filter and beaker is gold use more AR on the filter and dissolve the rest of the metal
@escrapchannel3 жыл бұрын
Bought this on eBay, so didn’t expect gold at all. Usually I lower the carat with copper and follow the path you suggest!
@platinumskies79683 жыл бұрын
@@escrapchannel ok and you should have got about .4g of gold
@escrapchannel3 жыл бұрын
@@platinumskies7968 You are right! I will separately process the pieces with silver and the dust on the filter.
@escrapchannel3 жыл бұрын
Exactly! 👍
@DrBLIN3 жыл бұрын
Привет, я так понял это была ювелирка в пробе 585? Или все же обычная бижутерия но хорошо позолоченная? Просто выход не очень большой получился! А так в целом все супер 👍👍👍
@escrapchannel3 жыл бұрын
Hi, 9 carat gold it was. 0.4g is expected but part of the gold has high silver content and cannot dissolve in aqua regia.