一种EGA-MS系统的标定方法  

Calibration of a EGA-MS System

作　　者：王继生[1] B.McEnaney 

机构地区：[1]煤炭科学研究总院北京煤化学所,北京10013 [2]Bath大学材料科学系

出　　处：《分析测试学报》1993年第6期19-24,共6页Journal of Instrumental Analysis

摘　　要：CaC_2O_4真空热分解中,第一阶段生成的CO中47%歧化成CO_2和C;第二阶段生成的CO与第一阶段生成的C发生气化反应,发生反应的比例随样品量增加而增大。用CaCO_3标定CO后再用CaC_2O_4标定CO可以排除这些干扰。本文提出了一个对任意气体标定的方法。Almost 47% of CO produced disproportionates into CO_2 and C in the first stage ofdecomposition of CaC_2O_4 heated under vacuum. The CO_2 produced in the second stage reactswith the C produced in the first stage. The proportion increases with the increase of samplesize. A combination system of a EGA and a quadrupol MS was successfully calibrated firstlywith CaCO_3 for CO_2 and then with CaC_2O_4 for CO. A universal calibration method for theEGA-MS System is proposed.

关 键 词：碳 气化 质谱 逸出气体 成分 标定 

分 类 号：O657.6[理学—分析化学]