Truong Thi Hong Loan, Tran Tuan Anh, Vo Hong Hai, Huynh Truc Phuong, Nguyen Van Thang, Vu Ngoc Ba
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Evaluation of heavy metal content in agricultural soil samples in the Mekong Delta region, VietNam and human health risks.
Salinity intrusion due to climate change, together with industrialization and farming activities, has increased the heavy metal content in soil, causing serious risks to ecosystems and human health. In this study, neutron analysis was applied to determine the metal content in soil samples, exposure dose, pollution index, and multivariate statistical analysis was used to evaluate the characteristics of each area. The results showed that the Zn content (235 mg/kg) in Soc Trang and Cr (213 mg/kg) in An Giang exceeded the permissible limit of Vietnam. Notably, the enrichment factor of U (Kien Giang) elements increased by 5.66 times compared to the background level. Although most elements tended to be enriched, metals such as As went against this trend. Principal component analysis revealed distinct regional distributions of observed variables in soils, while hierarchical clustering (AHC) and correlations between metals revealed strong associations between them in the environment. Children are at higher risk of both cancer and non-cancer events than adults when exposed to heavy metals and environmental pollutants through ingestion, dermal absorption, and inhalation.
期刊介绍：
Environmental Geochemistry and Health publishes original research papers and review papers across the broad field of environmental geochemistry. Environmental geochemistry and health establishes and explains links between the natural or disturbed chemical composition of the earth’s surface and the health of plants, animals and people.
Beneficial elements regulate or promote enzymatic and hormonal activity whereas other elements may be toxic. Bedrock geochemistry controls the composition of soil and hence that of water and vegetation. Environmental issues, such as pollution, arising from the extraction and use of mineral resources, are discussed. The effects of contaminants introduced into the earth’s geochemical systems are examined. Geochemical surveys of soil, water and plants show how major and trace elements are distributed geographically. Associated epidemiological studies reveal the possibility of causal links between the natural or disturbed geochemical environment and disease. Experimental research illuminates the nature or consequences of natural or disturbed geochemical processes.
The journal particularly welcomes novel research linking environmental geochemistry and health issues on such topics as: heavy metals (including mercury), persistent organic pollutants (POPs), and mixed chemicals emitted through human activities, such as uncontrolled recycling of electronic-waste; waste recycling; surface-atmospheric interaction processes (natural and anthropogenic emissions, vertical transport, deposition, and physical-chemical interaction) of gases and aerosols; phytoremediation/restoration of contaminated sites; food contamination and safety; environmental effects of medicines; effects and toxicity of mixed pollutants; speciation of heavy metals/metalloids; effects of mining; disturbed geochemistry from human behavior, natural or man-made hazards; particle and nanoparticle toxicology; risk and the vulnerability of populations, etc.
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