Table 2.

The wavelength used with ICP-OES, instrumental detection limit (IDL), limit of detection (LOD), limit of quantification (LOQ), correlation coefficient, and calibration equations

Metal	Wavelength	IDL (mg/L)	LOD (mg/L)	LOQ (mg/L)	Correlation coefficient	Calibration equation
Na	589.592	0.069	2.16	7.22	0.9988	I = 9245C-7006.1
Mg	285.213	0.002	0.55	1.83	0.9999	I = 1575000C-287546.9
Ca	317.933	0.010	2.92	9.75	0.9990	I = 641100C-632445.1
Mn	257.610	0.001	0.54	1.79	0.9990	I = 4813000C-858583
Fe	238.204	0.004	0.67	2.25	0.9996	I = 590900C-131479.4
Cr	267.716	0.007	0.44	1.48	0.9991	I = 640200C-92120
Co	228.616	0.007	0.31	1.03	0.9994	I = 209100C-20260.1
Ni	231.604	0.015	0.39	1.30	0.9994	I = 185200C-20700.7
Cu	327.393	0.009	0.25	0.82	0.9996	I = 822900C-66599.7
Zn	206.200	0.005	0.75	2.50	0.9980	I = 96750C-24088.4
Cd	228.802	0.030	0.15	0.51	0.9995	I = 353000C-14855.8
K	766.490	–	6.78	21.3-	0.9968	I = 4614C + 3950.7

*I is emission intensity and C is concentration