The spectral band pass was 0.7 nm for both analyzed elements. High-purity argon (99.999%, White Martins, Brazil) was used as the purge gas throughout at a flow rate of 250 mL min1
The spectralband pass was 0.7 nm for both analyzed elements. High-purityargon (99.999%, White Martins, Brazil) was used as the purge gasthroughout at a flow rate of 250 mL min1