Parameter Pb Co As Hg Ni Mn Cd
Wavelength, nm 224.8 240.7 193.7 253.7 232 279.5 228.8
Slit width, nm 0.2 0.2 0.5 0.2 0.2 0.2 0.5
Lamp current, mA 5.0 7.0 10.0 4.0 4.0 5.0 4.0
Background correction ON OFF OFF OFF ON OFF OFF
Precision, % 0.6-1.0 0.3-1.0 0.02-0.08 0.02-0.9 0.5-1.3 0.02-1.0 0.2-0.9
Fuel Acetylene Acetylene Acetylene Acetylene Acetylene Acetylene Acetylene
Support Nitrous oxide Nitrous oxide Nitrous oxide Nitrous oxide Nitrous oxide Nitrous oxide Nitrous oxide
Table 1: Operating parameters of the AAS (Varian AA240FS Atomic Absorption Spectrometer).