Physical and Chemical Properties of Biodiesel Obtained from Amazon Sailfin Catfish (Pterygoplichthys pardalis) Biomass Oil

Table 1

Atomic absorption equipment operating conditions for determination of the metals concentration in oil and Amazon sailfin catfish biodiesel.

Chemical element	Wavelength (nm)	Grid opening (nm)	Lamp current (mA)	Acetylene flow: air (L·min^−1)
Cd	228.8	0.5	8	1.2
Cu	324.8	0.5	5	0.9
Fe	246.3	0.2	15	0.9
K	766.5	0.5	Emission	1.1
Na	217	0.5	Emission	1.1
Ni	232	0.2	15	0.9
Mn	279.5	0.2	12	1
Pb	217	0.5	10	1.1
Zn	213.9	0.2	10	1.2