煤挥发分测定准确度和精确度影响因素的分析

摘要

The main measurement to promote accuracy and precision of volatile matter in coal:a big constant temperature area can be achieved by using a large oven; samples can be headed at the same speed by using the similar weight of crucible and cool crucible support, the synchro-determination of moisture and volatile matter can eliminate the deviation of volatile matter caused by moisture.%介绍了提高煤中挥发分测定的准确度和精确度的主要措施：使用大型的高温炉以便有较大面积的恒温区，使用重量基本相近的坩埚以便使试样受热速度一致，使用冷却的坩埚架使每次测定的加热速度保持一致，水分和挥发分同步测定消除因水分变化而导致挥发分结果的偏差。