如何配制汞离子溶液?请教大牛，小弟想配制不同浓度 汞离子 。请问如何配制？文献里一般选用HgCl2 和Hg(NO3)2??虽然Hg(NO3)2??易溶于水,但似乎会发生水解？请问是发生什么水解？还有是不是易形成HgO沉淀？百度百科收到结果“Hg(NO3)2溶于少量水和稀酸，遇大量水或沸水，则生成碱式盐沉淀”? ? 这句话不理解？以下是一篇文献的描述，有几个地方不懂，请教下。Hg2+stocksolution (0.1 M) was prepared by dissolving Hg(NO3)2 with 0.5% HNO3. The pH of the Hg stock solution was adjust to 6.0, to prevent the formation of HgO particles. The Hg stock solution was diluted to desired concentration with 50 mM 4-(2-hydroxyerhyl)piperazine-1-erhanesulfonic acid (HEPES) buffer (pH 7.4) containing 0.1 M NaNO3. MgCl2, CaCl2, Co(NO3)2,Ni (NO3)2, Cd(NO3)2, Cu(NO3)2, Cr(NO3)2, Zn(NO3)2, AgNO3。1.用 0.5% HNO3是为了让Hg(NO3)2 不水解吗？2 The pH of the Hg stock solution was adjust to 6.0, to prevent the formation of HgO particles.??这里母液是指 Hg2+ (0.1 M)??with 0.5% HNO3，如果这样的话，母液pH应该在1.3左右，难道加碱调节吗？我认为不是。3这里应用 缓冲液 的目的是什么？查看更多5个回答 . 16人已关注
请问哪里买商业的玻碳电极？最近尝试做燃料电池，论文中这样描述的：For comparison, a commercially available Pt/C-modified GCE (20 wt% Pt supported on carbon black, fuel cell grade from Alfa) was prepared in the same way.For comparison, a commercially available Pt/C-modified GCE (20 wt % Pt supported on carbon black, fuel cell grade from Sigma) 我想买上述电极，但是怎么也查不到哪里有买的。请同行的帮忙查看更多7个回答 . 8人已关注
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