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["【매일 한 문제】화학공리 562:EDTA 트리핑(5월 23일)\", ["본 게시글은 2217-5-23 0CLUS 7 7 수정되었습니다. 화학이론 게시판은 이날부터 【매일 한 문제】활동을 시작하여 화학기초 지식을 강화하도록 도와줍니다. 이活动翻译如下:\n

2017-05-23View Original

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Reply #22017-05-23
["本帖最后由 再回康桥 于
Reply #32017-05-23
说明铁离子干扰较大。要加掩蔽剂。
Reply #42017-05-23
用EDTA滴定法测定凝结水硬度时,常出现终点色为灰绿色的情况,说明什么干扰较大,需要加掩蔽剂? 铁
Reply #52017-05-23
(铜、 铁离子 )干扰较大,需要加掩蔽剂。

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