Table 1. Optimum Furnace Program of GFAAS.

step	temperature (°C)	time (s)	Ar flow rate (L min–1)
dry
1	85	5	0.3
2	95	40	0.3
3	120	10	0.3
pyrolysis
1	400	5	0.3
2	400	1	0.3
3	400	2	0.0
atomization
1	2100	1	0.0
2	2100	2	0.0
3	2100	2	0.3