Environmental Chemistry and Ecotoxicology of Hazardous Heavy Metals: Environmental Persistence, Toxicity, and Bioaccumulation

Journal of Chemistry, Год журнала: 2019, Номер 2019, С. 1 - 14

Опубликована: Март 5, 2019

Heavy metals are well-known environmental pollutants due to their toxicity, persistence in the environment, and bioaccumulative nature. Their natural sources include weathering of metal-bearing rocks volcanic eruptions, while anthropogenic mining various industrial agricultural activities. Mining processing for extraction mineral resources subsequent applications industrial, agricultural, economic development has led an increase mobilization these elements environment disturbance biogeochemical cycles. Contamination aquatic terrestrial ecosystems with toxic heavy is problem public health concern. Being persistent pollutants, accumulate consequently contaminate food chains. Accumulation potentially biota causes a potential threat consumers including humans. This article comprehensively reviews different aspects as hazardous materials special focus on persistence, toxicity living organisms, potential. The bioaccumulation its implications human discussed coverage fish, rice, tobacco. will serve valuable educational resource both undergraduate graduate students researchers sciences. Environmentally relevant most metalloids Cr, Ni, Cu, Zn, Cd, Pb, Hg, As. trophic transfer chains/webs important wildlife health. It very assess monitor concentrations segments resident biota. A comprehensive study chemistry ecotoxicology shows that steps should be taken minimize impact environment.

Язык: Английский

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Detection and removal of heavy metal ions: a review

Environmental Chemistry Letters, Год журнала: 2019, Номер 17(4), С. 1495 - 1521

Опубликована: Май 28, 2019

Язык: Английский

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Total concentrations and sources of heavy metal pollution in global river and lake water bodies from 1972 to 2017

Global Ecology and Conservation, Год журнала: 2020, Номер 22, С. e00925 - e00925

Опубликована: Янв. 23, 2020

This study collected past sampling data on total concentrations of 12 heavy metals (Cd, Pb, Cr, Hg, Zn, Cu, Ni, Al, Fe, Mn, As, and Co) in surface water bodies, i.e., 168 rivers 71 lakes, from 1972 to 2017. The intent was investigate the levels sources metal pollution across five decades continents. Mean global river lake water, number with greater than published threshold limits as per standards both World Health Organization (WHO) United States Environmental Protection Agency (USEPA) were generally lower 1970s 1980s 1990s, 2000s, 2010s. Over time, has changed single mixed pollution. Heavy above for WHO USEPA developed countries Europe North America, higher developing Africa, Asia, South America. main have mining manufacturing rock weathering waste discharge. differed continents, fertilizer pesticide use, along weathering, being dominant Africa. Mining manufacturing, Asia Europe. while four (mining discharge) responsible majority bodies Additionally, implementing rigorous emissions recycling wastewater are effective controlling source

Язык: Английский

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Trophic transfer, bioaccumulation, and biomagnification of non-essential hazardous heavy metals and metalloids in food chains/webs—Concepts and implications for wildlife and human health

Human and Ecological Risk Assessment An International Journal, Год журнала: 2018, Номер 25(6), С. 1353 - 1376

Опубликована: Май 23, 2018

Heavy metals are transferred from the abiotic environment to living organisms, accumulated in biota at different trophic levels, and thus contaminate food chains/webs. Trophic transfer, bioaccumulation, biomagnification of hazardous heavy chains have important implications on wildlife human health. This review article deals with aspects four most metalloids, that is, Cd, Pb, Hg, As. Different terms concepts used relation transfer metals, such as biotransference, bioconcentration, dietary accumulation, biomagnification, biodilution, trophodynamics, been discussed. Equations for quantification calculation metal factors (MTFs) given. The controversial question non-essential has addressed discussed examples available studies. Criteria definition Soil-to-plant is briefly while bioaccumulation these elements animal groups invertebrates, fish, amphibians reptiles, birds, mammals some examples. last section discusses harmful effects

Язык: Английский

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Health and environmental effects of heavy metals

Journal of King Saud University - Science, Год журнала: 2021, Номер 34(1), С. 101653 - 101653

Опубликована: Окт. 22, 2021

Seafood safety is a critical requirement for sustained global quantitative and qualitative development. In recent years, unintended poisons have damaged human health food quality. Heavy metals (HMs) distribution, speciation, bioaccumulation, toxicity evaluation in aquatic settings are at their peak. Safe ecosystems significant influence the possible composition of safe aquaculture products, which serve as foundation every web. HMs eventually impose number stresses on living organisms, contributing to increased mortality. Therefore, this study reflects explains exposure heavy well resulting risks humans. A more in-depth review translocation processes metal toxins into seafood provided. Finally, achieving stability environments, management techniques, genetic engineering, remediation recommended.

Язык: Английский

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Bioaccumulation and potential sources of heavy metal contamination in fish species in River Ganga basin: Possible human health risks evaluation

Toxicology Reports, Год журнала: 2019, Номер 6, С. 472 - 481

Опубликована: Янв. 1, 2019

This paper assesses the potential human health risks posed by five heavy metals (Zn, Pb, Cu, Cd, and Cr) found in seven most consumable fish species (Cirrhinus mrigala, Cirrhinus reba, Catla catla, Lebio rohita, Crossocheilus latius, Clupisoma garua, Mystus tengara) collected from local markets of Varanasi, Allahabad, Mirzapur, Kanpur Uttar Pradesh, India. The Cu concentration was at Varanasi (4.58 mg/l), Allahabad (2.54 Mirzapur mg/l). Pb recorded 0.54, 0.62, 0.85, 0.24 mg/l Kanpur, respectively. Cd 0.68, 0.78, 0.85 Cr, concentrations river water were observed over prescribed safe limits all sampling sites, while higher than standards sites except Kanpur. However, Zn under permissible (15 mg/l) sites. In case tissues, WHO reported Cr limits. results determined that highest accumulation settled liver selected species. ranked quantity, which tissues with 32.41 ± 2.55 μg/g gill C. catla 4.77 0.34 Reba. followed magnitude order > tissues.

Язык: Английский

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A review on magnetic sensors for monitoring of hazardous pollutants in water resources

The Science of The Total Environment, Год журнала: 2022, Номер 824, С. 153844 - 153844

Опубликована: Фев. 14, 2022

Язык: Английский

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Bioaccumulation of heavy metals in some commercially important fishes from a tropical river estuary suggests higher potential health risk in children than adults

PLoS ONE, Год журнала: 2019, Номер 14(10), С. e0219336 - e0219336

Опубликована: Окт. 17, 2019

The Karnaphuli River estuary, located in southeast coast of Bangladesh, is largely exposed to heavy metal contamination as it receives a huge amount untreated industrial effluents from the Chottagram City. This study aimed assess concentrations five metals (As, Pb, Cd, Cr and Cu) their bioaccumulation status six commercially important fishes, also evaluate potential human health risk for local consumers. hierarchy measured concentration level (mg/kg) was follows: Pb (13.88) > Cu (12.10) As (4.89) (3.36) Cd (0.39). Fulton's condition factor denoted that fishes were better 'condition' most species positive allometric growth. factors (BAFs) contaminants observed following orders: (1971.42) (1042.93) (913.66) (864.99) (252.03), among specimens, demersal fish, Apocryptes bato appeared be bioaccumulative organism. Estimated daily intake (EDI), target hazard quotient (THQ), index (HI) carcinogenic (CR) assessed implications suggest values within acceptable threshold both adults children. However, calculated CR indicated age groups not far risk, HI demonstrated children nearly 6 times more susceptible non-carcinogenic effects than adults.

Язык: Английский

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Electronic waste generation, regulation and metal recovery: a review

Environmental Chemistry Letters, Год журнала: 2020, Номер 19(2), С. 1347 - 1368

Опубликована: Окт. 20, 2020

Язык: Английский

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A Review of the Health Implications of Heavy Metals in Food Chain in Nigeria

The Scientific World JOURNAL, Год журнала: 2020, Номер 2020, С. 1 - 11

Опубликована: Апрель 16, 2020

Heavy metals such as Zn, Pb, Fe, and Cu are abundant in the environment contribute largely to sustainability equilibrium of ecosystem processes. However, because their bioaccumulation, nondegradability, excessive amounts which they exist, these contaminate food chain subsequently become a source toxicity human beings entire ecological function. This is major issue concern within study environmental science geochemistry. Although there global significance issue, it seems more immediate for developing countries (DCs) Nigeria, where pressure teeming population escalates exigency sustainability, security, total eradication hunger. Within Nigerian context, many studies have examined this all-important but most fragmented limited purview mostly individual states localities country. Taken on wider geographical scale, discussions perspectives heavy metal contamination offer insufficient insight expose merely snapshot actual situation. As result this, country-wide knowledge base implications lacking. Thus, present synthesises existing literature findings create vulnerability Nigeria. Aquatic foods, fruits, vegetables, staple tubers host carcinogenic mutagenic components motivates Standard Organisation Nigeria (SON), along with other agricultural agencies, intensify efforts monitoring analysing components, we advise consumers eat certain degrees caveat.

Язык: Английский

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