氧化钙和氧化镁的测定方法的修正

The Correction of Determination Method for Calcium oxide and Megnesium oxide

本文通过对1993年局属电厂垢及腐蚀产物模拟试样统检中氧化钙、氧化钙和氧化镁测定结果偏低问题的分析、试验,查明了影响氧化钙和氧化镁测定结果偏低的主要原因,即氢氧化铁胶体的干扰影响。通过试验,提出了在酸性条件下加掩蔽剂三乙醇胺的掩蔽方法,从而消除了氢氧化铁胶体的干扰,扩大了测定方法的适用范围,提高了分析结果的准确度。

The article analyzes the determination result of calcium and magnesium oxide of simulation sample about depasits and corrosive products during the examination of rpovince bureau in 1993, And it has found out that the low determination result is due to the disturbrance of hydroxide iron colloide. By experiment, It put forward that the shelter rengant tri-ethanolamine should be added under the condition of acid. Therefore, This determination method can eliminate the distur-brance of hydroxide iron colloide, and expand determination range, and raise the accurate degree of analysis result