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a Doctor of chemistry, told reporters from the step point of view,christian louboutin pas cher, this approach is feasible in laboratory operations. However,barbour pas cher, if you want to refer to this method,veste barbour homme, the experiment, there should be an experienced chemist guidance, and be sure to pay attention to environmental protection.Share: welcome to comment I want to commentMicroblogging Recommended | today's hot micrWASHINGTON & nbsp; & nbsp; robber Yu Jun (a pseudonym) abscond during wantonly theft, after being arrested by public security organs,louboutin chaussures, more than the military has not confessed his true identity, and "Mamou" pseudonym in prison ten years, but eventually the date of exposure of sin. Yesterday,air max homme, police released Feixi case that the police have are serving prison sentences of more than army pulled out.According feixi police, in 1992,chaussure louboutin, more than the military together with others on the Hefei to rivers.
the" old Wu "also excited to put up its use of the school spectrum devices were analyzed and identified three Kim results "three Kim,louboutin soldes, ICP-AES analysis at 99.99% Oh, no impurity peaks of other elements Oh". And on Renren and Sina Weibo, a more detailed, more intuitive picture clearly demonstrates the "sturdy old Wu thiourea gold extraction technique. ""Old Wu" is actually a student at Nankai University Department of Chemistry, College senior, called. On the reason for thought "thiourea gold extraction technique", "old Wu" said his idea is very simple, is that when the waste electronic products directly sold on the pounds,barbour, too wasteful. In social practice after school, the "old Wu" gave a scrap acquired businesses to do the technical guidance,louboutin homme, access to many precious metals recovery approach. For this experiment, the "old Wu" has repeatedly stressed, this method is non-toxic, high purity, low cost,escarpins louboutin, and the technology is very mature,zanotti femme, not so-called "aqua regia law." "Old Wu," that he was to complete the experiment in mid-November, " This experiment requires only one day can be completed. "Ten Steps5 CPU refining the four small Kim"Old Wu" and "thiourea gold extraction technique" There are ten steps The first step is to prepare the instrument to prepare beakers, glass, muffle furnace;. The second step is to prepare reagents is thiourea, sulfuric acid, hydrogen peroxide and other ; The third step is to prepare CPU, "CPU gold content varies, but 486,586 gold old section of the computer more adequate"; The fourth step is to soak.
rinse first with CPU, remove the thermal silica,louboutin paris, etc., and then water immersion CPU, the dilute sulfuric acid to adjust the pH to about 1.5,nike air max 1, then add 30% 5 ml of hydrogen peroxide,louboutin prix, thiourea 1 g (preferably made of solution), the order can not be reversed; fifth step is activated carbon adsorption; sixth step is heated to high temperatures, temperature not lower than 1000, until the charcoal is completely high temperature air oxidation after the rest is yellow gold; seventh step is to use distilled water and pure nitric alloy slightly cook a cook, direct filtration ,chaussure louboutin pas cher, washed repeatedly with water, thick gold came out; eighth step is purified, probably took an hour; s nine steps and tenth step, is to use a muffle furnace to melt the gold and use the instrument to detect the purity of gold."Old Wu," said he used this method from five CPU, the final extract four small gold beads,tn pas cher, which one is that it does not accidentally lost.User question:Too costly and polluting the environmentFor the "old Wu" alchemy, although many users feeling,tn air max 2014 pas cher, found a "rich road", but there are also users questioned laborious, time-consuming, more users worried, high "indigenous" Alchemy cost and pollution of the environment, because " The CPU is now inside the metal did not before,tn soldes, did you get get to actually not earn anything. "Doctor of chemistry:Operation need professional guidanceIn this regard.
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发表于 2015-9-21 20:49:58
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