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采用ICP-MS以无水氯化镁、碳镁摩尔为5~8:1的氯化镁醇合物丙烯聚合催化剂载体和碳镁摩尔比为12:1的六乙醇合氯化镁为对象,分别在普通模式、He模式下采用外标曲线加内标校正法和He模式下标准加入法测定其中的镁含量,并取几个典型样品采用ICP-OES进行镁含量测定。考察了采用ICP-MS测定丙烯聚合催化剂载体中镁含量时碳可能产生的影响。实验结果表明,对于碳镁摩尔比从5~8∶1到12∶1样品,碳对镁含量分析的影响均很小,其镁含量均可以在普通模式下采用外标曲线加内标校正法进行快速、简单、准确的测定。
ICP-MS was used to study the effects of magnesium chloride and magnesium chloride on the molar ratio of magnesium to magnesium chloride of 5: 8: 1, and the molar ratio of carbon to magnesium of 12: 1, The external standard curve plus internal calibration method and the standard addition method under He mode were used to determine the magnesium content. Several typical samples were determined by ICP-OES. The effect of carbon on the determination of magnesium content in the propylene polymerization catalyst support by ICP-MS was examined. The experimental results show that the effect of carbon on the analysis of magnesium content is very small for the samples with molar ratios of carbon to magnesium from 5: 8: 1 to 12: 1, and the magnesium content can be calibrated with external standard curve and internal standard Make quick, easy and accurate measurements.