Hello
I am going to search for heavy metals in comercial fish tissue, it is mainly going to be to compare the results with the WHO and other institutions limits recommendations for human consumption, but I will also like to know if that specific concentration of heavy metals was affecting the fish health prior to its capture .
Is there any standard? For example, from an X concentration value of Cadmiun in white muscle tissue it is Y% probable the fish reproduction system was afffected.
Or something like that.
the ones I consider the most important to know is Cd and Hg,
thank you
The toxicity of Hg depends highly on its binding form. Organic Hg species are much more (neuro) toxic than inorganic ones. Your work should that into account.
The best way is to use aquavariums containing various levels of metals and grow the concerned fishes in them. In this way you may come up with lethal dose of metals.
The bio accumulation of metals is defined by deriving Bioaccumulation Factor (BAF). In terms of the levels of heavy metals in fish tissues may affect the reproductive system and other physiological systems. If you intends to study the levels of metals Cd and Hg in fish tissues, also study the such metals in sediment and then derive Potential Ecological Risk Index (PERI), Pollution load index, contamination factor etc., PERI could be taken into account for health risk for fishes.
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