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Ground water arsenic

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https://www.readbyqxmd.com/read/28731297/smart-capsules-for-lead-removal-from-industrial-wastewater
#1
Bartosz Tylkowski, Renata Jastrząb
Ground and especially drinking water could be contaminated by heavy metal ions such as lead and chromium, or the metalloid arsenic, discarded from industrial wastewater. These heavy metal ions are regarded as highly toxic pollutants which could cause a wide range of health problems in case of a long-term accumulation in the body. Thus, there have been many efforts to reduce the concentration of lead ions in effluent wastewater. They have included the establishment of stringent permissible discharge levels and management policies, the application of various pollution-control technologies, and the development of adsorbent materials for lead reduction...
April 10, 2017: Metal Ions in Life Sciences
https://www.readbyqxmd.com/read/28718096/contamination-status-of-arsenic-in-fish-and-shellfish-from-three-river-basins-in-ghana
#2
Francis Gbogbo, Samuel Darlynton Otoo, Obed Asomaning, Robert Quaye Huago
Fish and shellfish are regularly consumed and sold in Ghana, yet studies on arsenic pollution in Ghana are limited largely to ground water. This study evaluated arsenic concentrations in seven species of shellfish and 10 species of fish inhabiting the mouth of Ankobra, Densu and Volta basins in Ghana and assessed the public health implications. Arsenic levels varied from 0.2 to 2.2 mg L(-1) in the three rivers and were higher than WHO recommended values of 10 μg L(-1) for drinking water. Except for Periophthalmus sp...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28668631/enhanced-adsorption-of-arsenic-through-the-oxidative-treatment-of-reduced-aquifer-solids
#3
Jenna R Huling, Scott G Huling, Ralph Ludwig
Arsenic (As) contamination in drinking water is an epidemic in many areas of the world, especially Eastern Asian countries. Developing affordable and efficient procedures to remove arsenic from drinking water is critical to protect human health. In this study, the oxidation of aquifer solids through the use of sodium permanganate (NaMnO4), hydrogen peroxide (H2O2), and exposure to air, enhanced the adsorption of arsenic to the aquifer material resulting in treatment of the water. NaMnO4 was more effective than H2O2...
June 22, 2017: Water Research
https://www.readbyqxmd.com/read/28626450/microbial-phosphorus-solubilization-and-its-potential-for-use-in-sustainable-agriculture
#4
REVIEW
Elizabeth T Alori, Bernard R Glick, Olubukola O Babalola
The use of excess conventional Phosphorus (P) fertilizers to improve agricultural productivity, in order to meet constantly increasing global food demand, potentially causes surface and ground water pollution, waterway eutrophication, soil fertility depletion, and accumulation of toxic elements such as high concentration of selenium (Se), arsenic (As) in the soil. Quite a number of soil microorganisms are capable of solubilizing/mineralizing insoluble soil phosphate to release soluble P and making it available to plants...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28487912/efficient-purification-of-arsenic-contaminated-water-using-amyloid-carbon-hybrid-membranes
#5
Sreenath Bolisetty, Noemi Reinhold, Christophe Zeder, Monica N Orozco, Raffaele Mezzenga
We show the purification of arsenic-contaminated water using amyloid fibril-based membranes, which adsorb both the arsenate (+5) and arsenite (+3) oxidation forms at efficiencies of ∼99%. Binding isotherms indicate that amyloid fibrils possess multiple binding residues capable of strongly adsorbing arsenic ions via metal-ligand interactions, delaying the saturation of the membrane. We also show that these membranes can be reused for several cycles without any efficiency drop, and validate our technology in purifying real contaminated ground water by removing arsenic with an efficiency as high as 99...
May 10, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28459544/nanocomposite-coated-microfluidic-based-photocatalyst-assisted-reduction-device-to-couple-high-performance-liquid-chromatography-and-inductively-coupled-plasma-mass-spectrometry-for-online-determination-of-inorganic-arsenic-species-in-natural-water
#6
Cheng-Hsing Lin, Yu Chen, Yi-An Su, Yu-Ting Luo, Tsung-Ting Shih, Yuh-Chang Sun
To selectively and sensitively determine the trace inorganic As species, As(III) and As(V), we developed a nanocomposite-coated microfluidic-based photocatalyst-assisted reduction device (PCARD) as a vapor generation (VG) device to couple high-performance liquid chromatography (HPLC) separation and inductively coupled plasma-mass spectrometry (ICPMS) detection. Au nanoparticles were deposited on TiO2 nanoparticles to strengthen the conversion efficiency of the nanocomposite photocatalytic reduction. The sensitivity for As was significantly enhanced by employing the nanocomposite photocatalyst and using prereduction and signal-enhancement reagents...
June 6, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28458060/a-novel-concept-in-ground-water-quality-management-towards-function-specific-screening-values
#7
Frank A Swartjes, Piet F Otte
This paper is meant to initiate and feed the discussion on a more sophisticated procedure for the derivation and use of groundwater screening values (GSVs). To this purpose, the possibilities and tools for the derivation of function specific GSVs, i.e., GSVs that depend on the actual contact of humans and ecosystems with groundwater and groundwater-related mediums, are elaborated in this study. Application of GSVs geared to the specific use and function of specific groundwater volumes could result in a more effective and cost-efficient groundwater quality management, without compromising the protection of human health and the ecosystem...
April 21, 2017: Water Research
https://www.readbyqxmd.com/read/28409115/a-metagenomic-approach-to-decipher-the-indigenous-microbial-communities-of-arsenic-contaminated-groundwater-of-assam
#8
Saurav Das, Sudipta Sankar Bora, R N S Yadav, Madhumita Barooah
Metagenomic approach was used to understand the structural and functional diversity present in arsenic contaminated groundwater of the Ganges Brahmaputra Delta aquifer system. A metagene dataset (coded as TTGW1) of 89,171 sequences (totaling 125,449,864 base pairs) with an average length of 1406 bps was annotated. About 74,478 sequences containing 101,948 predicted protein coding regions passed the quality control. Taxonomical classification revealed abundance of bacteria that accounted for 98.3% of the microbial population of the metagenome...
June 2017: Genomics Data
https://www.readbyqxmd.com/read/28352518/isolation-and-characterization-of-arsenic-resistant-bacteria-and-possible-application-in-bioremediation
#9
Uttiya Dey, Soumendranath Chatterjee, Naba Kumar Mondal
Ground water arsenic contamination is a widespread problem in many developing countries including Bangladesh and India. In recent years development of modern innovative technologies for the removal of arsenic from aqueous system has become an interesting topic for research. In this present study, two rod shaped Gram-positive bacteria are being reported, isolated from arsenic affected ground water of Purbasthali block of Burdwan, West Bengal, India, which can tolerate arsenate concentration up to 4500 ppm and 550 ppm of arsenite concentration...
June 2016: Biotechnology Reports
https://www.readbyqxmd.com/read/28131446/human-exposure-assessment-of-different-arsenic-species-in-household-water-sources-in-a-high-risk-arsenic-area
#10
Hifza Rasheed, Paul Kay, Rebecca Slack, Yun Yun Gong, Annie Carter
Understanding arsenic speciation in water is important for managing the potential health risks associated with chronic arsenic exposure. Most arsenic monitoring studies to date have only measured total arsenic, with few looking at arsenic species. This study assessed 228 ground water sources in six unstudied villages in Pakistan for total, inorganic and organic arsenic species using ion chromatography inductively coupled plasma collision reaction cell mass spectrometry. The concentration levels approached 3090μgL(-1) (95% CI, 130...
April 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27994824/erratum-ground-water-arsenic-contamination-a-local-survey-in-india
#11
(no author information available yet)
[This corrects the article on p. 100 in vol. 7, PMID: 27625765.].
2016: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/27836337/pollutant-sources-in-an-arsenic-affected-multilayer-aquifer-in-the-po-plain-of-italy-implications-for-drinking-water-supply
#12
Marco Rotiroti, John McArthur, Letizia Fumagalli, Gennaro A Stefania, Elisa Sacchi, Tullia Bonomi
In aquifers 160 to 260m deep that used for public water-supply in an area ~150km(2) around the town of Cremona, in the Po Plain of Northern Italy, concentrations of arsenic (As) are increasing with time in some wells. The increase is due to drawdown of As-polluted groundwater (As ≤144μg/L) from overlying aquifers at depths 65 to 150m deep in response to large-scale abstraction for public supply. The increase in As threatens drinking-water quality locally, and by inference does so across the entire Po Plain, where natural As-pollution of groundwater (As >10μg/L) is a basin-wide problem...
February 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27797216/inhibition-of-oxidative-stress-and-enhancement-of-cellular-activity-by-mushroom-lectins-in-arsenic-induced-carcinogenesis
#13
REVIEW
Tanmoy Rana, Asit Kumar Bera, Subhashree Das, Debasis Bhattacharya, Diganta Pan, Subrata Kumar Das
Chronic arsenicosis is a major environmental health hazard throughout the world, including India. Animals and human beings are affected due to drinking of arsenic contaminated ground water, due to natural mineral deposits, arsenical pesticides or improperly disposed arsenical chemicals. Arsenic causes cancer with production of free radicals and reactive oxygen species (ROS) that are neutralized by an elaborate antioxidant defense system consisting of enzymes and numerous non-enzymatic antioxidants. Dietary antioxidant supplements are useful to counteract the carcinogenesis effects of arsenic...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27796975/heavy-metals-and-pesticide-exposure-from-agricultural-activities-and-former-agrochemical-factory-in-a-salvadoran-rural-community
#14
Edgar Quinteros, Alexandre Ribó, Roberto Mejía, Alejandro López, Wilfredo Belteton, Aimee Comandari, Carlos M Orantes, Ernesto B Pleites, Carlos E Hernández, Dina L López
Pesticide handling in farming activities involves substantial hazards for the rural population and for the environment. In Latin America, it is estimated that the population at risk of being affected by heavy metals is over 4 million. This research describes the different types of exposure to pesticides and heavy metals in a rural population (Loma del Gallo), considering both environmental and occupational exposure. This study consists of an inspection in a former pesticide factory (QUIMAGRO), analysis of heavy metals in samples from surface and ground water in the community close to the factory, and a survey to the local population about their perceptions of pesticide exposures...
January 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27747271/spatial-variation-of-arsenic-in-soil-irrigation-water-and-plant-parts-a-microlevel-study
#15
M S Kabir, M A Salam, D N R Paul, M I Hossain, N M F Rahman, Abdullah Aziz, M A Latif
Arsenic pollution became a great problem in the recent past in different countries including Bangladesh. The microlevel studies were conducted to see the spatial variation of arsenic in soils and plant parts contaminated through ground water irrigation. The study was performed in shallow tube well command areas in Sadar Upazila (subdistrict), Faridpur, Bangladesh, where both soil and irrigation water arsenic are high. Semivariogram models were computed to determine the spatial dependency of soil, water, grain, straw, and husk arsenic (As)...
2016: TheScientificWorldJournal
https://www.readbyqxmd.com/read/27693923/potential-health-risk-assessment-of-potato-solanum-tuberosum-l-grown-on-metal-contaminated-soils-in-the-central-zone-of-punjab-pakistan
#16
Zafar Iqbal Khan, Kafeel Ahmad, Sumaira Yasmeen, Nudrat Aisha Akram, Muhammad Ashraf, Naunain Mehmood
Metal buildup was estimated in potato (Solanum tuberosum L.), grown in central Punjab, Pakistan. This crop was irrigated with multiple water sources like ground, sewage and canal water. Concentrations of different metals like zinc (Zn), arsenic (As), lead (Pb), iron (Fe), nickel (Ni), molybdenum (Mo), copper (Cu), and selenium (Se) were assessed in the potato crop irrigated with different types of waters. Sewage water treated crop and soil had higher metal concentrations than those treated with other two treatments...
January 2017: Chemosphere
https://www.readbyqxmd.com/read/27625765/ground-water-arsenic-contamination-a-local-survey-in-india
#17
Arun Kumar, Md Samiur Rahman, Md Asif Iqubal, Mohammad Ali, Pintoo Kumar Niraj, Gautam Anand, Prabhat Kumar, Abhinav, Ashok Kumar Ghosh
BACKGROUND: In the present times, arsenic poisoning contamination in the ground water has caused lots of health-related problems in the village population residing in middle Gangetic plain. In Bihar, about 16 districts have been reported to be affected with arsenic poisoning. For the ground water and health assessment, Simri village of Buxar district was undertaken which is a flood plain region of river Ganga. METHODS: In this study, 322 water samples were collected for arsenic estimation, and their results were analyzed...
2016: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/27625453/diffuse-parenchymal-lung-disease-in-a-case-of-chronic-arsenic-exposure
#18
Somnath Bhattacharya, Atin Dey, Sayantan Saha, Saurav Kar
A 42-year-old housewife, the resident of rural part of West Bengal, presented with gradually progressive exertional dyspnea associated with a dry cough for last 3 years clinical features were suggestive of diffuse parenchymal lung disease (DPLD). Her chest X-ray posteroanterior view and high resolution computed tomography scan of the thorax showed bilateral patchy ground glass opacities and reticulonodular pattern. Search for the etiology revealed classical skin findings of chronic arsenic exposure in the form of generalized darkening and thickening of skin and keratotic lesions over the palms and soles and classical raindrop pigmentation over leg which was present for last 7 years subsequently her bronchoalveolar lavage fluid, hair, nail, and drinking water showed significant amount of arsenic contamination...
September 2016: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/27465741/reduced-line-1-methylation-is-associated-with-arsenic-induced-genotoxic-stress-in-children
#19
Apurba K Bandyopadhyay, Somnath Paul, Shanta Adak, Ashok K Giri
Early life exposure to arsenic has profound effect towards development of arsenic induced toxic outcomes. Some districts in the state of West Bengal, India are highly affected by arsenic, mainly through ground water. In children, not much of the toxic outcomes like dermatological lesions are observed but it is thought that the exposure leads to transient alteration in their biological processes that leads to various deleterious health effects later on. We evaluated the global methylation status by analyzing the LINE-1 methylation profile in children from arsenic exposed region between the age group 5-15 years along with the cytogenetic stress induced by arsenic as measured by lymphocyte micronucleus (MN) frequency...
August 2016: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/27372455/leaching-behavior-of-selected-trace-and-toxic-metals-in-coal-fly-ash-samples-collected-from-two-thermal-power-plants-india
#20
P Sandeep, S K Sahu, P Kothai, G G Pandit
Studies on leaching behavior of metals associated with coal fly ash (FA) are of great concern because of possible contamination of the aquatic environment. In the present study, leaching behavior of metals (As, Se, Cr, Pb, V, Zn, etc.) in two different FA samples (FA1 and FA2) was investigated at various pH (2-12), temperatures of leachate solution and using TCLP. At pH 2, the highest leaching was observed for Fe (21.6 and 32.8 µg/g), whereas at pH 12, Arsenic was found to have the highest leaching (1.5 and 2...
September 2016: Bulletin of Environmental Contamination and Toxicology
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