Potentiometric Stripping Analysis of Cadmium and Lead with Constant Inverse Current in the Analytical Step Using an Open Tubular Mercury-Coated Glassy Carbon Electrode

Table 5

Trace metals contents in milk samples.

Sample	Metal content (μg/kg)
	Cd	Pb
M^a1	4.27 ± 0.39^b	52.1 ± 4.6
M2	3.11 ± 0.34	65.3 ± 5.4
M3	3.85 ± 0.41	60.1 ± 5.1
M4	5.56 ± 0.59	96.8 ± 8.1
M5	5.27 ± 0.58	60.9 ± 4.9

^aMilk. ^bMean value ± 2 SD, .