摘要
在28～30℃时用2％柠檬酸提取轻烧镁中柠檬酸镁，用草酸铵去除钙后，再用EDTA标准溶液滴定。此方法适合高含量枸溶性镁含量的测定，方法操作简单，终点易判断，具有较好的精密度和回收率。
Citric acid of 2% was used to extract magnesia citrate in caustic calcined magnesia at 28 - 30℃. Ammonium oxalate was used to remove calcium from magnesia citrate. Then EDTA was used to titrate the solution. The method was suitable for the determination of high contents citrate-soluble magnesia. This method was simple to operate. The end point was easy to judge. We could get high aecuraey and returns-ratio.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2010年第1期81-83,共3页
Soil and Fertilizer Sciences in China
关键词
轻烧镁
枸溶性镁
测定
caustic calcined magnesia
citrate-soluble magnesia
determination
