Comparative Study of Heavy Metals in Dried and Fluid Milk in Peshawar by Atomic Absorption Spectrophotometry

Table 1

Concentration of essential mineral elements (ppm) in milk.

Milk group		Essential minerals
		Calcium	Magnesium	Copper	Zinc	Iron	Manganese
	Total
	Mean + SD	2106 + 954	349 + 205	0.59 + 0.59	4.79 + 4.03	1.67 + 2.08	0.0267 + 0.02
	Range	970–3825	110–875	0.10–2.37	0.09–12.80	0.02–7.54	0.01–0.09
Dried	Infant formula
	Mean + SD	3081 + 277 NS	540 + 206 NS	1.00 + 0.76 NS	8.97 + 2.35 NS	4.33 + 2.22 NS	0.0318 + 0.02*
	Range	2475–3600	250–825	0.11–2.37	4.69–11.34	1.33–7.54	0.01–0.07
	Powdered
	Mean + SD	3092 + 502 NS	480 + 173 NS	0.90 + 0.41 NS	7.31 + 4.20 NS	2.42 + 0.99 NS	0.0400 + 0.02*
	Range	2075–3825	225–875	0.10–1.40	2.22–12.80	1.30–4.30	0.02–0.09
Liquid	Fresh
	Mean + SD	1333 + 142 NS	240 + 106 NS	0.15 + 0.01 NS	1.93 + 1.45 NS	0.17 + 0.12 NS	0.0215 + 0.01*
	Range	1050–1580	120–425	0.12–0.17	0.69–5.01	0.02–0.43	0.01–0.04
	Processed
	Mean + SD	1228 + 204 NS	185 + 50 NS	0.46 + 0.52 NS	1.97 + 1.73 NS	0.25 + 0.11 NS	0.0166 + 0.01*
	Range	970–1725	110–250	0.11–1.70	0.09–4.84	0.06–0.43	0.01–0.03

∗Significant at 𝑃<0.05 (ANOVA/LSD).
NS: nonsignificant.