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weishenmo

新虫 (小有名气)

[求助] 0.01M乙酸胺(PH5.0) 已有1人参与

想分析一个药,查了一篇文献上面写着其中一个流动相是0.01M乙酸胺(PH5.0),请问这是什么意思啊,怎么配制。谢谢了。
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guangzhizi3

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【答案】应助回帖

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感谢参与,应助指数 +1
weishenmo: 金币+10, ★★★很有帮助 2014-05-26 18:43:25
0.01M乙酸胺(PH5.0),即0.01mol/L乙酸铵(pH5.0)
配制方法(以配制1L为例):往1L水中,加入0.01*77=0.77g(77为乙酸铵的分子量)的乙酸铵,然后加入乙酸或者氨水调pH至5.0。一般为加乙酸,因为乙酸铵水溶液的pH一般在6~7左右,需要加入乙酸才能调节pH至5.0,如果乙酸加多了,也可加入氨水将pH调回5.0~
2楼2014-05-26 17:55:16
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Felix Baumgartner Space Jump

0.01 mol/L 乙酸胺   PH5.0, 同意2楼的回复
3楼2014-05-26 19:36:23
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