Microwave-Assisted Digestion of Polyurethane Foam as an Alternative to Elution: Solid Phase Extraction of Cd(II) and Pb(II) for Their Determination in Swimming Pool Waters

Table 2

Temperature program employed in the determination of Cd and Pb in the digestates of polyurethane foam by GF AAS.

Step	T (°C)	Ramp (s)	Hold (s)	Ar flow rate (L·min^−1)
Drying I	95	10.0	—	0.3
Drying II	140	12.0	20.0	0.3
Pyrolysis^a	700 (Cd)	5.0	5.0	0.3
	1000 (Pb)
Atomization^a	1800 (Cd)	2.0	1.0 (Cd)	0.0
	2000 (Pb)		2.0 (Pb)
Cleaning	2000 (Cd)	5.0	—	0.3
	2100 (Pb)

^aOptimum temperatures of pyrolysis and atomization were set by analyzing the profile of the respective curves (see text for details).