掩蔽与解蔽法螯合滴定测定钙镁

Chelatometry determination of calcium and magnesium with masking and de masking

用ＨＡＡ（ 乙酰丙酮） 掩蔽和解蔽Ｍｇ２ ＋ ，在同一溶液中，同一ｐＨ 值（ｐＨ１０） 、指示剂和标准溶液（ＥＤＴＡ） 直接连续滴定Ｃａ２＋ 、Ｍｇ２＋ 。应用于测定白云石、菱镁矿和镁砂中钙、镁的含量，结果相当满意。

Masking and de masking of Mg 2+ with HAA (acetylacetone,abbreviated as HAA) for direct titration of calcium and magnesium with EDTA in the same solution,same pH(pH=10),same indicator and at the same standard solution(EDTA).The method has been used for the determination of calcium and magnesium in dolomite and magnesite with satisfactory results.