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Determination of Heavy Metals Concentration in Edible Egg Samples Collected From Khulna, Bangladesh and Evaluation of Their Health Implication

Eggs are a key source of protein and one of the most nutritious foods in the human diet. Heavy

metal contamination of egg samples could have a number of health consequences. The goal

of this study was to use atomic absorption spectrometry to evaluate the content of heavy metals

in eggs samples and to analyze the health risks by calculating the estimated daily intake (EDI),

target hazard quotient (THQ), hazardous index, and target cancer risk (TCR). Fe (84.81,

73.84-100.80) > Zn (35.83, 34.05-40.63) > Cr (4.13, 2.51-8.77) > Cu (1.73, 1.48-2.30) > Mn

(0.77, 0.61-0.88) > Ni (0.54, 0.38-1.28) > Pb (0.19, 0.091-1.23) > Cd (0.06, 0.04-0.12) mg/Kg

(fresh weight). Therefore, the lead (Pb) and chromium (Cr) concentrations are greater than the

FAO's 2005 reference values of 0.1 and 1.0 mg/kg, respectively. The calculated EDI and THQ

values are below the acceptable risk limit. In all types of eggs, the total impact of all heavy

metals (HI) was found to be less than the permitted limit (1.0). Similarly, the TCR values for

Cr, Pb, Ni, and Cd were below the allowed range (10-3 to 10-6 ), indicating that the customer

would not be exposed to any potential carcinogenic risks over the course of their lives.

However, the overall research indicates that the tested items are safe to consume in terms of

heavy metal contamination.

Role Supervisor
Class / Degree Bachelor


Start Date January, 2020
End Date March 2022