CMC中NaCl含量分析方法改进的研究

Study on Improvement of NaCl Content Analytical Method in CMC

摘要: 本文证明了莫尔法是测定ＣＭＣ中ＮａＣｌ含量的较好方法；研究了ＳＹ５０９３－８６标准关于ＣＭＣ中ＮａＣｌ含量测定时，ＣＭＣ加热溶解后的冷却时间和指示剂用量对试验结果的影响规律，并指出要提高测定精度和准确度，ＣＭＣ加热溶解后的冷却时间应固定为３０ｍｉｎ，而且空白试验应采用不含ＮａＣｌ的纯ＣＭＣ，同时加入０．１ｇ左右碳酸钙以代替蒸馏水，使空白试验与实际测定状况更加相符。

Abstract: he Mohr method was proved to be a better method for the determination NaCl content in CMC in this paper. The influences of cooling time and indicator dosage after CMC heated and dissolved on test results have been discussed in the determination of NaCl co