IIARD International Institute of Academic Research and Development

RESEARCH JOURNAL OF FOOD SCIENCE AND QUALITY CONTROL (RJFSQC )

E-ISSN 2504-6145
P-ISSN 2695-2459
VOL. 11 NO. 3 2025
DOI: 10.56201/rjfsqc.vol.11.no3.2025.pg12.14

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Determination of Heavy Metal Contents in Two Varieties of Canned Tuna Fish

Kanu Micheal Iheanyichukwu Ekwem Chibuike Emmanuel Okereke Ijeoma Patience

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Abstract

The increasing consumption of canned tuna fish globally necessitates regular assessment of its safety, particularly with respect to heavy metal contamination. This study evaluates the concentrations of selected heavy metals—namely lead (Pb), cadmium (Cd), mercury (Hg), and arsenic (As)—in two popular varieties of canned tuna fish commonly found in local markets. Using Atomic Absorption Spectrophotometry (AAS), samples were analyzed to determine the levels of contamination and assess their compliance with international food safety standards. The findings reveal variations in metal concentrations between the two tuna varieties, with some values approaching or exceeding permissible limits. These results raise concerns about potential health risks associated with long-term consumption and underscore the need for continuous monitoring and regulation.

keywords:

Canned tuna · Heavy metals · Mercury · Cadmium · Food safety · Atomic absorption

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