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Trace Elements, Heavy Metals, and Micronutrients
Published in Epstein Eliot, The Science of Composting, 2017
Prolonged consumption oflow Cu, high Mo, high sulfate, high Zn or high Fe diets can induce Cu deficiency. Copper toxicity to animals has been reported for Cu-fertilized pastures where sheep consumed the Cu fertilizer, but no Cu toxicity has been reported for ruminants consuming field-grown Cu-rich forages. Sheep tolerance of ingested Cu-rich biosolids and swine manures has been tested; Cu toxicity did not result even though dietary Cu far exceeded toxic levels of soluble Cu salts (Poole et al., 1983). Bioavailability of diet Cu varies widely for ruminants, and biosolid, manure, or compost Cu has low bioavailability. Copper toxicity to humans and animals occurs very infrequently. Although humans can suffer a genetic Cu toxicity (Wilson’s disease), no linkage has been made between Cu levels in normal foods and this disease.
Acute copper overload induces vascular dysfunction in aortic rings due to endothelial oxidative stress and increased nitric oxide production
Published in Journal of Toxicology and Environmental Health, Part A, 2018
Karolini Zuqui Nunes, Mirian Fioresi, Vinicius Bermond Marques, Dalton Valentim Vassallo
Copper (Cu) is an essential trace element necessary for maintaining the function of living organisms (Stern 2010; Yunus et al. 2015), serving as a cofactor for several important enzymes in the body (Gaetke, Chow-Johnson, and Chow 2014; Grubman and White 2014). In nature, this metal is present in different chemical forms and concentrations in the Earth crust, deep water, and even in the atmosphere itself (Tegoni et al. 2014). Copper toxicity may result from accidental excess ingestion, environmental contamination, the use of Cu-based bactericides and fungicides in agriculture, emission through Cu smelting industry (Bost et al. 2016; Mortimer, Kasemets, and Kahru 2010) as well as adrenal insufficiency and inborn errors of metabolism Cu (Gaetke, Chow-Johnson, and Chow 2014).
Geochemical Assessment of Metals in Soils and Food Crops Around Alluvial Gold Mining in Abuakwa South Municipal, Ghana
Published in Soil and Sediment Contamination: An International Journal, 2023
Douglas Siaw Baah, David Fosu-Asante, Crentsil Kofi Agyekum, Wisdom Mawuli Edzesi, Eric Boateng Acheampong
Results in Table 4 indicate that Cu and Zn concentrations of 1.56 mg/kg and 0.21 mg/kg in cassava were below the recommended limit of 2/10 mg/kg and 15 mg/kg provided by WHO (Joint and WHO Expert Committee on Food Additives, & World Health Organization 2007) and GEPA (Armah et al. 2010). Li et al. (2019) reported a higher concentration of Cu and Zn in similar research which is in contrast to the findings of this study. A zinc deficit can be caused by the high consumption of dietary copper and vice versa. Excessive copper toxicity can cause nausea, vomiting, stomach discomfort, headaches, dizziness, weakness, diarrhea, and a metallic aftertaste (Gutierres 2019).