Harmful Effects Of Metals On The Environment – Pressurized Solvent Extraction with Ethyl Acetate and Liquid Chromatography-Tandem Mass Spectrometry for the Analysis of Selected Conazole Matcha Fungicides.
Evaluating the Combined Toxicity of Two Benzophenone-Type UV Filters on the Green Alga Chlamydomonas reinhardtii by Response Surface Methodology.
- 1 Harmful Effects Of Metals On The Environment
- 2 A Review On Heavy Metals Uptake By Plants Through Biosorption
- 3 Not So “green” Technology: The Complicated Legacy Of Rare Earth Mining
Harmful Effects Of Metals On The Environment
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A Review On Heavy Metals Uptake By Plants Through Biosorption
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Heavy Metals In Water And Soil: Methods For Treatment
By Brilliance Onyinyechi Anyanwu Brilliance Onyinyechi Anyanwu Scilit Preprints.org Google Scholar View Publications 1, Anthonet Ndidiamaka Ezejiofor Anthonet Ndidiamaka Ezejiofor Scilit Preprints.org Google Scholar View Publications 2, Zelinjo Nkeiruka Igweze Zelinjo Nkeiruka Igweze Zelinjo Nkeiruka Igweze Public Publications Ebere Orisakwe Orish Ebere Orisakwe Scilit Preprints.org Google Scholar View Publications 2, *
World Bank Africa Center of Excellence in Oilfield Chemicals Research, University of Port Harcourt, PMB, 5323 Port Harcourt, Rivers State, Nigeria
Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port Harcourt, PMB, 5323 Port Harcourt, Rivers State, Nigeria
Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, Madonna University Elele, PMB, 5001 Elele, Rivers State, Nigeria
Toxicity Of Metal Compounds: Knowledge And Myths
Received: 21 September 2018 / Revised: 17 October 2018 / Accepted: 23 October 2018 / Published: 2 November 2018
The plan for development and modernization has come at a great cost. Various human activities in developed and developing countries, especially in sub-Saharan Africa (SSA) have raised environmental security concerns. Increased mining activities, illegal refining, use of leaded petrol, airborne dust, illegal dumping and burning of toxic waste, absorption of manufacturing industries into populated areas these, inadequate environmental laws, and poor policy implementation, have produced unmeasurable pollution. pollution related to heavy metals in recent decades. This review assesses the public health effects of heavy metals and their compounds in SSA. This shows the scale and magnitude of the problem posed by exposure to heavy metal compounds in terms of public health.
Environmental pollution is the price we have paid for the growth of industrialization and urbanization. Although technological progress has improved living conditions, it has also released unwanted substances into the environment, thus creating problems for public health. Ineffective pollution and emission control laws due to urbanization and industrialization have put people at risk. Sub-Saharan Africa (SSA) is already heavily polluted with heavy metals and other chemicals .
Heavy metals are persistent environmental pollutants and humans are exposed to them through water, air, food or industrial settings . Natural and anthropogenic activities are two sources of heavy metal pollution. Microorganisms in the food chain allow many heavy metal wastes to accumulate . Heavy metals are used extensively to support living conditions in developed nations and enter the environment through natural and anthropogenic sources, including artisanal mining, illegal refining, and inadequate waste disposal. , and the constant increase in industrialization and urbanization. Thus, the risk of human exposure is increasing due to the prevalence of heavy metals in the environment. Inadequate management of restoration projects has led to unplanned exposures in the past . Iron toxicity from various sources is a major problem, from an evolutionary, biological and dietary point of view [4, 5].
Not So “green” Technology: The Complicated Legacy Of Rare Earth Mining
The prevalence of heavy metals poses major threats to adults and children. Although industrial toxins often affect many organ systems, the severity of the health effects depends on the type of metal, the method of exposure, the age of the individual, and ultimately, the have individual susceptibility . People are exposed to heavy metals, either voluntarily or involuntarily, from various sources resulting from increased industrial pollution, man-made or natural activities. According to the authors of Martinez-Finley et al. , there is a constant increase in heavy metal pollution worldwide and this has caused serious health problems. Metals exist as compounds in the environment . Given that Pb, Hg and Cd are widely distributed in the environment from different sources, human exposure is inevitable because these metals are non-biodegradable, persistent in the environment, and can accumulate in the environment at very low levels. .
Population growth, urbanization, and industrialization, as well as the rapid growth of buildings due to inadequate planning, have caused an increase in waste generation without proper disposal methods  . Increased mining activities, illegal refining, use of leaded gasoline, airborne dust, illegal dumping, and toxic industrial incineration, absorption of manufacturing industries in areas where with their populations, coupled with weak and inadequate environmental regulations, have all presented an unprecedented challenge. metal pollution in the past years . According to UNEP , which is an environmental assessment report of Ogoniland, Rivers State, Nigeria, the levels of hydrocarbons and heavy metals in soil, drinking water and air in 10 villages are almost 1000 times higher than acceptable. conditions.
There were higher levels than the World Health Organization WHO recommended blood limits for Pb  Ni, Cr, and Mn  in pregnant women and children in Nigeria. Similarly, heavy metal contamination in South Africa in the blood of pregnant women and the umbilical cord from the population of popular areas showed high levels of Hg, Pb, Cd and Se . Heavy metals were found in umbilical cord whole blood samples indicating high risks of heavy metal contamination in adults and infants. Due to widespread heavy metal exposure from environmental and occupational exposures in developing countries, a thorough knowledge of the impact of these hazardous metals on public health is essential for designing effective policies. for preventive medicine in Africa.
The present review provides an overview of the organ toxicity patterns and public health consequences of heavy metal compounds resulting from occupational and environmental exposure in developing countries and SSA.
Environmental Pressures From Industry’s Heavy Metal Pollution Decreasing — European Environment Agency
To identify papers focusing on heavy metal exposure and public health effects in developing countries, we sequentially searched Google Scholar, Research Gate, Springer, Medline and PubMed using the keywords Search terms: ‘heavy metals’, ‘heavy metal. risk assessment’, ‘heavy metal pollution in developing countries’, and ‘health effects of heavy metals’. A search was conducted independently of each database and the articles were then pooled. The collected studies were analysed, and two articles were excluded. The results were collected and studied to obtain the correct data.
Additions and omissions were identified when reviewing the title and abstract of each journal article. Articles were included if they described the relationship between exposure to heavy metal compounds and public health outcomes, or heavy metal pollution in SSA. In addition, the processing methods of these metal compounds and their environmental risk assessment are included. If two or more reports were published from the same study, then only the most recent study or the study with the best analysis of iron intake was included. Articles in which detailed epidemiological studies were included in the review. Studies reporting that metals are beneficial to the body were excluded from the study. Additionally, the review excluded articles that were not written in the English language.
Initially, 159 articles were reserved for this review. After pooling the results and removing 4 duplicates, a total of 155 articles were retained for data retrieval. During the extraction of relevant data for the study, 12 articles were omitted as they did not apply to the focus of this review; three articles were removed because they were written in foreign languages; leaving a total of 140 articles for this review. In order to ensure the suitability of the subjects, six other subjects were removed, as shown in figure 1 below. After applying selection criteria, 134 articles were retained and used in this systematic review. These articles examined the relationship between low-dose metal compound exposure and health outcomes in developing countries.
Cd, Hg, Pb, Cr, and Ni are all toxic metals that are constantly present in our environment  and cause toxicity in various ecosystems such as soil,
Podcast: Reducing Toxic Metals In Food
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