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xuyh_326

木虫 (著名写手)


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9楼: Originally posted by pesistence at 2015-05-20 13:43:54
在配五氯酚溶液的时候,先将五氯酚溶于氢氧化钠中,再加入稀硫酸调节PH,当PH偏小时有絮状沉淀生成,是五氯酚析出了么,五氯酚的浓度为10mg/L。但文献里都能调节PH,最低有1.8的,不知道为什么,求大哥指教

20150 ...

中性或酸性条件下,五氯酚的溶解度肯定是比较低的;白色絮状应该是五氯酚的析出!文献中,如果是中性或酸性,浓度是比较低的!
11楼2015-05-20 14:09:35
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pesistence

铜虫 (小有名气)

引用回帖:
10楼: Originally posted by xuyh_326 at 2015-05-20 14:07:32
Quantitative analysis of the dehalogenated products was
performed using a Waters HPLC system with a symmetry
column (250 mm length  4.6 mm i.d., 5 mm particle size) and
a Waters 2996 Photodiode  ...

谢啦
坚持不要脸……
12楼2015-05-20 15:01:02
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