Determination of ash content in coal using in-house reference materials
2018
The quality assurance of ash content in coal analysis was conducted using in-house reference material as a daily standard. This analysis was based on ASTM D 3302-12 using Thermogravimetric Analysis (TGA). The quality assurance of can be seen from the control charts, homogeneity test, and stability test. In the creating of the control chart, performed several selection tests such as Dixon test, Grubbs test, and Precision test. The in-house reference material measurement obtained from Dixon test and Grubbs test resulted the value was in-layer and for precision test obtained CV analysisquality assurance of ash content in coal analysis was conducted using in-house reference material as a daily standard. This analysis was based on ASTM D 3302-12 using Thermogravimetric Analysis (TGA). The quality assurance of can be seen from the control charts, homogeneity test, and stability test. In the creating of the control chart, performed several selection tests such as Dixon test, Grubbs test, and Precision test. The in-house reference material measurement obtained from Dixon test and Grubbs test resulted the value was in-layer and for precision test obtained CV analysis
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