摘要
在pH=5-6微酸性溶液中,用铜试剂和六次甲基四胺沉淀铁、锰、铝等元素,而钙、镁离子仍留在溶液中;在pH10氨性缓冲溶液中,加铬黑T指示剂,以EDTA滴定钙、镁含量;在pH12的溶液中,用钙指示剂,以EDTA滴定钙含量。
Iron,manganese,aluminum and other elements are precipitated in copper reagent in the p H = 5 - 6slightly acidic solution. Six methyl four amine,calcium and magnesium ions are remained in solution. In p H10 ammonia buffer solution,calcium and magnesium content are measured by using EDTA titration in p H12 chrome black T indicator.
出处
《贵州科学》
2015年第1期52-54,共3页
Guizhou Science
关键词
氧化钙
氧化镁
铜试剂
六次甲基四胺
calcium oxide
magnesium oxide
copper reagent
six methyl four amine
