Distribution of Heavy Metals in the Soils Associated with the Commonly Used Pesticides in Cotton Fields

Table 1

Analytical parameters for the estimation of selected metals by AAS.

Sr. number	Metal	Wavelength (nm)	Lamp current (mA)	Slit width (nm)	Fuel flow rate (L/min)	Detection limit (mg/L)
1	Pb	283.3	9.0	1.3	2.2	0.20
2	Cr	359.3	9.0	1.3	2.8	0.05
3	Co	240.7	15	0.2	2.2	0.20
4	Cu	324.8	9.0	1.3	2.2	0.02
5	Ni	232.0	12	0.2	2.2	0.10
6	Cd	228.8	9.0	1.3	2.0	0.005