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king!

金虫 (正式写手)

[求助] 请教镍离子中是否含铁离子的检验方法?

已知溶液中有亚磷酸、磷酸、硫酸镍、氯化镍,现在要确定用什么方法检测?
用EDTA的话,有什么现象发生?
用苯酚会发生什么现象?
请高人指点,谢谢!

[ Last edited by king! on 2012-3-2 at 10:40 ]
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lisuyuan

木虫 (正式写手)

【答案】应助回帖

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感谢参与,应助指数 +1
king!(金币+1): ★★★很有帮助 2012-03-05 12:24:28
能和碱金属、稀土元素和过渡金属等形成稳定的水溶性络合物。除钠盐外,还有铵盐及铁、镁、钙、铜、锰、锌、钴、铝等各种盐。EDTA测铁:Fe3++Y=FeY,指示剂:磺基水杨酸
络合滴定法的基本原理:
http://baike.baidu.com/view/1633 ... " border=\"0\">.htm
2楼2012-03-02 13:03:32
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