Mercury Contamination in Fish and Its Effects on the Health of

Overview

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Key numbers

The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:

• 58 ng g−1 , range: 2.4–330 ng g−1 ), followed by omnivorous fish (median: 24 ng g−1 , range:
• benthic fish have higher mean THg concentrations (50,51). Additionally, larger predatory
• rous species presented higher Hg contents (range 0.03–0.88 µg g−1 ) when compared to
• omnivorous fish (range 0.003–0.19 µg g−1 ), demersal fish exhibited higher Hg levels (range
• (0.17 ppm wet weight) in fish muscle was within the range known to adversely affect
• sensitive birds and mammals, and only 4% of Pacific cod samples contained more than
• 0.5 ppm of Hg (52). Additionally, the regression models in a study of cod (mostly from the
• Pacific Ocean) showed that 27% of the Hg variation was due to tissue examination and the
• (0.3 mg/kg) or the international standard of WTO (0.2 mg/kg). Moreover, in terms of
• in the North Sea, and the Hg content in sea fish (0.09–0.36 mg/kg) was generally higher
• than that in river fish (less than 0.1 mg/kg) (21). In addition, data on Hg levels in fish from
• including basic skills such as listening, reading, and writing (84,85). Meanwhile, in contrast,
• exceeded 2 µg/L of plasma (89). MeHg is usually absorbed by the body through the
• digestive tract (90). As a common food item on the human table, the entry of MeHg into
• clearance of MeHg from the brain is delayed by 20% compared to other parts of the body,
• tilefish and weakfish, etc.) (as described in Table 1).
• Table 1. Choice guidelines for species and types of fish based on Hg contamination for daily fish
• cooking treatment; an overall loss of up to 33% of Hg species in fish was observed after

Methods (brief)

• sensitive birds and mammals, and only 4% of Pacific cod samples contained more than
• women. Moreover, researchers measured blood Hg levels using atomic absorption based
• 22. Bjørklund, G.; Dadar, M.; Mutter, J.; Aaseth, J. The toxicology of mercury: Current research and emerging trends. Environ. Res.
• 83. Bjørklund, G.; Chirumbolo, S.; Dadar, M.; Pivina, L.; Lindh, U.; Butnariu, M.; Aaseth, J. Mercury exposure and its effects on
• 130. Schmidt, L.; Bizzi, C.A.; Duarte, F.A.; Muller, E.I.; Krupp, E.; Feldmann, J.; Flores, E.M.M. Evaluation of Hg species after culinary

Implications

This page makes the source discoverable for category-level evidence routing. Values remain source-native and should be used only with the stated matrix, species, basis, geography, and censoring context from the paper. The page does not convert total mercury to methylmercury or use total arsenic as inorganic arsenic.

Wiki pages this source may touch

• Fish — marine, predatory (tuna, swordfish, shark, king mackerel)
• Fish — marine, non-predatory (sardines, anchovies, salmon, cod)
• Shellfish (shrimp, crab, lobster, clams, oysters, mussels)
• Mercury
• Mercury
• Cadmium
• Arsenic
• Nickel
• Chromium

Verification notes

• Identity check: DOI, raw handle, candidate cite-key, and SHA-256 were compared against existing wiki/sources/ pages before creation.
• Full-PDF read: pdftotext -layout was run on the full PDF twice; extracted text hashes matched before the page was written.
• Numeric verification: numeric/table-bearing lines were selected mechanically from the verified extraction and preserved without unit conversion or rounding.
• Brand firewall: the worker skips PDFs when extracted numeric lines appear brand/manufacturer-sensitive; this page contains category-level or species-level evidence only.
• HMTc firewall: no threshold, percentile, pass/fail, clean/dirty, or certification math is stated.

Update history

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