Table 1.

ICP-OES operating conditions.

Parameter	Value
Plasma gas flow	10 L/min
Auxiliary gas flow	0.2 L/min
Nebulizer gas flow	0.7 L/min
RF power	1350 watts
Plasma view	Axial
Read delay	60 sec
Peristaltic pump flow rate	1.5 mL/min
Spray chamber type	Cyclonic
Nebulizer	MiraMist
Injector	Alumina
Sample tubing	Solvaflex 2-stop tubing 0.76 mm i.d.
Drain tubing	Solvaflex 2-stop tubing 1.14 mm i.d.
Torch	Quartz; single slot
Replicates	3
Wavelengths (nm)	Cd:228.802; Co:228.616; Cu:324.752; Mo:202.031; Ni:231.604; Pb:220.353; V:292.464; Zn: 213.857