ArticleBMC chemistry2026
Preliminary assessment of toxic metals in cookware, moulding materials and soils from manufacturing sites in southwest Nigeria, with evaluation of cookware leaching potential.
Article in BMC chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cookware manufactured through informal processes often uses unregulated raw materials and lacks quality control, which may result in elevated toxic metal levels. This study assessed the concentrations of manganese (Mn), lead (Pb), chromium (Cr), cadmium (Cd), and nickel (Ni) in informally manufactured cookware from Saki, southwest Nigeria. It also evaluated metal leaching into water during cooking and examined associated moulding materials and soils to identify potential sources of contamination. Four cookware samples, six moulding materials, and seventeen soil samples (including one background sample) were analyzed using flame atomic absorption spectrophotometry. Metal concentrations in cookware samples were generally high, with mean values (mg/kg) of Mn (375), Pb (136), Cr (26.9), Cd (1.70), and Ni (181), exceeding FAO/WHO acceptable limits for food-contact materials. Moulding materials showed extremely elevated Mn concentrations, while soils near manufacturing sites contained Pb and Cd above NESREA guideline values. Leaching tests conducted by boiling water for up to three hours showed metal concentrations below detection limits (0.01 mg/L), suggesting minimal short-term exposure risks. However, the high total metal content in cookware and production materials indicate potential public health concerns. This study provides baseline data linking informal manufacturing practices to cookware quality and site contamination in Nigeria.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.