Comparative Study of Raw and Boiled Silver Pomfret Fish from Coastal Area and Retail Market in Relation to Trace Metals and Proximate Composition

Table 2

Effects of sampling location and boiling on trace metal concentration (in mg/kg) in the silver pomfret fish muscle.

Trace metal; (mg/kg)	Fish from coastal area; mean ± SD		Fish from retail market; mean ± SD		World standard; mg/kg
	Raw	Boiled	Raw	Boiled
Copper (Cu)	3.33 ± 1.19^a	3.55 ± 1.22^a	3.99 ± 0.42^ab	5.56 ± 1.99^b	10 (FAO/WHO, 1984)
Iron (Fe)	98.02 ± 2.21^a	99.77 ± 4.05^a	79.47 ± 2.15^b	80.24 ± 3.46^b	300 (FAO/WHO, 1984)
Zinc (Zn)	25.25 ± 0.29^a	24.82 ± 0.18^bc	24.4 ± 0.27^c	24.49 ± 0.46^d	150 (FAO/WHO, 1984)
Manganese (Mn)	6.93 ± 1.21^a	6.29 ± 0.22^b	6.39 ± 0.43^c	6.21 ± 0.22^d	5.4 (FAO/WHO, 1984)
Cadmium (Cd)	6.02  ±  ^a	6.03 ± 0.01^b	6.02 ± 0.003^c	6.02 ± 0.003^d	1 (FAO/WHO, 1984)
Lead (Pb)	15.33 ± 0.07^a	15.34 ± 0.38^a	14.58 ± 0.19^b	14.38 ± 0.14^b	2 (WHO, 1985)
Chromium (Cr)	13.51 ± 0.37^a	14.59 ± 1.26^bac	12.4 ± 0.57^ca	12.75 ± 0.55^ca	0.05 (FAO/WHO, 1990)
Arsenic (As)	4.32 ± 0.73^a	4.89 ± 0.29^a	3.49 ± 0.10^b	3.51 ± 0.09^cb	5 (FAO/WHO, 2004)

Each replicate contained 3 treatment units. Mean values with different superscript letters are significantly different at and LSD values are at .