Table 4.

Mean concentrations (µg/g) mean ± SD of elements (Se, Zn, Mn and Cu) measured in 25 samples of the four food types (rice, wheat, meat and chicken) in dry weight samples: rice (n = 8), wheat (n = 5), meat (n = 4) and chicken (n = 8)

No.	Food type	$\text{Average}:\left(\frac{\mathit{Dryweight}}{\mathit{Wetweight}}\right)$	Essential elements (µg/g)
			Se	Zn	Mn	Cu
1	Rice	0.92	0.13 ± 0.09	9.26 ± 4.20	10.07 ± 11.87	0.8 ± 0.32
2	Wheat	0.88	0.19 ± 0.11	18.99 ± 6.97	24.53 ± 9.89	1.47 ± 0.65
3	Meat	0.26	0.06 ± 0.01	11.58 ± 1.58	0.17 ± 0.07	0.16 ± 0.10
4	Chicken	0.39	0.62 ± 0.14	18.42 ± 3.19	1.60 ± 1.13	1.77 ± 0.38

Average of dry weight/wet weight was also reported