Table 1.

The wavelength, limit of detection (LD), limit of quantification (LQ), standard calibration concentration, and correlation coefficient (r) for trace metal determination.

Trace metals	Wavelength (nm)	LD (μg/kg)	LQ (μg/kg)	Standard calibration concentration (μg/l)	Correlation coefficient (r)
Cd	228.8	0.0027	0.01	0, 0.1, 0.2, 0.4, 0.8, 1.6, 3.2	0.999830
Pb	283.3	0.76	2.5	0, 1, 2, 4, 8, 16, 32	0.999791
Hg	253.7	0.2	0.4	0, 1, 2.5, 5, 10, 20	0.999902