Direct Quantitative Analysis of Arsenic in Coal Fly Ash

Table 4

Optimized furnace program for the analysis of raw coal (liquid sampling system).

Step	Parameters				Ar gas
	Temperature (°C)	Rate (°C s^−1)	Hold time (s)	Total time (s)
Drying	90	30	5	7.3	Max
Drying	105	10	20	21.5	Max
Drying	120	10	5	6.5	Max
Pyrolysis	1500	100	30	43.8	Max
Autozero (AZ)	1500	0	6	6.0	Stop
Atomization	2500	1000	6	7.0	Stop
Cleaning	2600	1000	10	10.1	Max