An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... Lead has long been known as neurotoxic and immunotoxic heavy metal in human and animals including fish, whereas, 2, 3-dimethylsuccinic acid (DMSA) and fulvic acid (FA) are well-known biological chelators. The present investigation was carried out to assess the potential chelating and antioxidant effects of dietary supplementation with DMSA and FA against lead acetate (Pb)-induced oxidative stress ...
... This study comparing the expected pollution status of phenol along with heavy metals in sediments of two economic regions on the Mediterranean Sea coast using equilibrium partitioning method (EPM) as well as exposure of fishermen and populations to these sediments through ingestion and skin contact while swimming. El-Dekhila (ED) and Abu Talat (AT) regions were different in sediment texture and po ...
heavy metals; humans; phytoaccumulation; politics; soil pollution
Abstract:
... Heavy metal pollution remains a global environmental challenge that poses a significant threat to human life. Various methods have been explored to eliminate heavy metal pollutants from the environment. However, most methods are constrained by high expenses, processing duration, geological problems, and political issues. The immobilization of metals, phytoextraction, and biological methods have pr ...
... As a common heavy metal ion with strong toxicity and wide distribution, lead ions (Pb²⁺) had great harm to the human body. In this work, a low-noise ratiometric fluorescence biosensor was developed based on Pb²⁺-dependent DNAzyme and exonuclease III (Exo III)–assisted cascade signal amplification. Firstly, the substrate chain of DNAzyme (S-DNA) was modified on the surface of magnetic beads (MBs) t ...
adsorption; algorithms; biochar; biomass; data collection; feedstocks; heavy metals; humans; neural networks; risk; variance; water shortages; water treatment
Abstract:
... This study aims at providing a robust artificial intelligent model for predicting the efficiency of heavy metal removal from aqueous solutions of biochar systems with high accuracy and reliability. Not only is it environmentally significant, but it is also a powerful tool for improving biochar adsorption efficiency, reducing the risk of a global water shortage. Accordingly, 22 types of biomass fee ...
Earth system science; autocorrelation; case studies; heavy metals; humans; kriging; prediction; sample size; soil; soil pollution; spatial data
Abstract:
... Heavy metal soil pollution is a worldwide problem. It is affected by many natural and human factors through heterogeneous relationships. Accurate prediction at unobserved locations using a limited number of observations hence remains a challenge. This study proposes a two-point machine learning method to fully utilize the information in spatial neighbors and high-dimensional covariates to improve ...
byproducts; heavy metals; humans; lead; public health; pulp and paper industry; wastewater; well water
Abstract:
... Wastewater in an industry which is often called liquid waste is a by-product produced by several human activities. Liquid waste pollution from industrial effluents containing lead (Pb) in dug well water used by the community for daily needs can cause poisoning and health complaints. This study aims to determine the content of lead (Pb) in the liquid waste stream and well water as well as public he ...
X-radiation; X-ray fluorescence spectroscopy; cost effectiveness; fluorescence; heavy metals; humans; land use; models; pollution; regression analysis; soil
Abstract:
... Traditional soil heavy metal (HM) investigation usually costs a lot of human and material resources. In-situ portable X-ray fluorescence spectrometry (PXRF) is a cheap and rapid HM analysis method, but its analysis accuracy is usually affected by spatially non-stationary field environment factors. In this study, residual sequential Gaussian co-simulation (RCoSGS) was first proposed to incorporate ...
... The heavy metal cadmium (Cd) is a kind of non-essential toxic environmental pollutant with extremely long biological half-life, various toxic and sublethal effects on aquatic organisms, and many adverse effects on the organs of human and other mammals. Vitamin C is an essential micronutrient in aquatic feed, and an indispensable nutrient for maintaining physiological processes in different animals ...
adsorbents; adsorption; aquatic organisms; electrostatic interactions; heavy metals; humans; ion exchange; lead; montmorillonite; nanocomposites; nanosheets; pyrroles
Abstract:
... Contact with trace heavy metal contaminants will also lead to extremely bad health influence on human body and aquatic life. Although various adsorbents have been synthesized for the recovery of heavy metal ions, most of them shows deficient adsorption capacity, sluggish uptake rate and low selectivity. In this study, a montmorillonite/polypyrrole (MMT/PPy) film was successfully synthesized by int ...
COVID-19 infection; Severe acute respiratory syndrome coronavirus 2; coastal zone management; decision making; heavy metals; humans; laws and regulations; marine pollution; sanitation; stakeholders; tourism; tourists; Africa; Europe
Abstract:
... The worldwide spread of the SARS-CoV-2 caused an unprecedented lockdown measures in most countries with consequences on the world society, economy, and sanitary systems. This situation provided an opportunity to identify the effects of human confinement on natural environments, like touristic sandy beaches, which are stressed due to anthropogenic pressures. Based on previous articles about heavy m ...
... Heavy metal contaminants like mercury is a serious problem to human, animals, and some plants’ health. Phytoremediation is an alternative technique, which can remediate the contaminants from soil using a hyperaccumulator plant. The goal of this research was to study anatomical changes of plant main organs (roots, stems, and leaves) of Ipomoea reptans which are assumed as a hyperaccumulator plant t ...
bioavailability; carcinogenicity; digestion; dust storms; environment; heavy metals; humans; ingestion; intestines; magnetic susceptibility; magnetism; mineral content; pollution load; risk; topsoil; China
Abstract:
... Direct ingestion of sandstorm particles is an important pathway in human exposure to heavy metals. This study investigated the potential health risks of heavy metals transported in sandstorms from Dunhuang to Lanzhou in northwestern China using environmental magnetic parameters and metal bioaccessibilities in simulated gastric and intestinal tracts. The mean magnetic susceptibility of sandstorms i ...
... Fuller’s earth (FE) is a phyllosilicate used as a powder for household or skin decontamination due to its adsorbent properties. Recent studies have shown that water suspensions exhibit similar adsorbent capacities. FE is heterogeneous due to its composition of elementary clay aggregates and heavy metal particles. Here, FE toxicity was assessed in vitro on skin cells and in vivo on Danio rerio embr ...
... There is a lack of information on the effect of urban transport activities in emitting heavy elements into the environment. This research assesses the concentrations of some heavy elements in the deposited atmospheric dust at Yazd bus terminals in Yazd, Iran. So, 34 falling dust samples were collected from the leaves of trees planted near the bus terminals. Following the digestion by nitric acid, ...
United States Environmental Protection Agency; absorption; aquatic ecosystems; biocenosis; detection limit; environmental health; environmental protection; guidelines; heavy metals; humans; pollution load; principal component analysis; risk; rivers; sediment contamination; sediments; India
Abstract:
... The Godavari is the largest river of peninsular India and receives a significant quantity of pollutants from diverse sources, including many industries, urban developments and agricultural fields. Such pollution is more prominent in the upper stretch of the river. This work aimed to assess the water and sediment contaminations of River Godavari for the presence of trace metals Cd, Cr, Cu, Mn, Pb a ...
chickens; food chain; heavy metals; human health; humans; models; pollution; research; risk; soil
Abstract:
... The purpose of this study was to assess heavy metal contamination in soil, plants, earthworms, and chicken in farmlands adjacent to an old mining site and to evaluate the potential exposure risks to humans through the consumption of chicken. For this purpose, soil, earthworms, plant, chickens, and eggs were sampled from 5 sites following a gradient of contamination. All samples were analyzed for h ...
... Heavy metal levels in pangasius, tilapia, water, and sediments were studied in four commercial aquaculture regions of Bangladesh, and the related human consumption risk was estimated. Inductively coupled plasma mass spectrometry (ICPMS) was used to assess the concentration of heavy metals. Bioconcentration factor (BCF) and biota-sediment accumulation factor (BSAF) were used to assess biota’s metal ...
blood; cadmium; cross-sectional studies; diastolic blood pressure; dose response; environmental assessment; heavy metals; humans; hypertension; lead; models; risk; China
Abstract:
... Cadmium (Cd) and lead (Pb) co-exposure have been inconsistently associated with blood pressure (BP) and hypertension (HTN). This cross-sectional study included 309 participants who completed a health examination and had blood Cd (Cd-B) and Pb (Pb-B) levels measured. The association between Cd, Pb, and their combined exposure levels, with systolic (SBP) and diastolic blood pressure (DBP) and HTN wa ...
... Heavy metal exposure has been associated with lung function decline, but there is still a lack of evidence on preschoolers. In this study, we evaluated cross-sectional associations between urinary metal levels and slow vital capacity (SVC) in preschoolers. A total of 1284 children were selected from seven-kindergartens. Urinary concentrations of 23 metals were measured by inductively coupled plasm ...