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緒言过去測定鈣、鎂的方法,大都需与其它金屬分离后,用草酸銨沉淀鈣,使鈣与鎂分离,再用磷酸氫二銨沉淀鎂。手續繁而費时多。近年来,EDTA測定鈣、鎂的应用甚为广泛。在地質局化驗会議上,霍梅廖夫專家也曾提到必須广泛地利用特里隆,因此結合本室情况,我們試驗了ED TA(ethglene diminete traacetic acil)直接測定石灰石中之鈣、鎂。方法快速,大大地簡化了操作过程,縮短了所需时間。在質量上又能滿足地質要求。
INTRODUCTION In the past, the method of measuring calcium and magnesium was mostly separated from other metals and the calcium was precipitated with ammonium oxalate to separate the calcium from the magnesium, and the magnesium was precipitated with the diammonium hydrogen phosphate. The procedure is complicated and time consuming. In recent years, EDTA determination of calcium, magnesium is widely used. At the Geological Survey meeting, Khomelov expert also mentioned the need to make extensive use of Trilon. Therefore, in our case, we tested the EDTA (ethglene diminete traacetic acil) for the direct determination of calcium and magnesium in limestone. The method is fast, greatly simplifies the operation and shortens the time required. In the quality and meet the geological requirements.