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Ground water arsenic

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https://www.readbyqxmd.com/read/28487912/efficient-purification-of-arsenic-contaminated-water-using-amyloid-carbon-hybrid-membranes
#1
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
#2
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 (ICP-MS) 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...
May 1, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28458060/a-novel-concept-in-ground-water-quality-management-towards-function-specific-screening-values
#3
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
#4
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
#5
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
#6
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
#7
(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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
https://www.readbyqxmd.com/read/27350824/arsenic-and-smokeless-tobacco-induce-genotoxicity-sperm-abnormality-as-well-as-oxidative-stress-in-mice-in-vivo
#17
Samrat Das, Puja Upadhaya, Sarbani Giri
BACKGROUND: Arsenic, a naturally occurring metalloid is a well-known water contaminant which causes a wide range of serious adverse health effects including cancer upon long-term exposure. Recent studies have shown high arsenic contamination in the ground water of North Eastern states of India including Southern Assam. Smokeless tobacco consumption locally known as "sadagura" is one of the most prevalent life style habit in southern Assam. The present study was undertaken in mice test system in vivo...
2016: Genes and Environment: the Official Journal of the Japanese Environmental Mutagen Society
https://www.readbyqxmd.com/read/27225799/arsenicosis-possibly-from-contaminated-groundwater-associated-with-noncirrhotic-intrahepatic-portal-hypertension
#18
Ashish Goel, Pamela Christudoss, Renu George, Banumathi Ramakrishna, G Jayakumar Amirtharaj, Shyamkumar N Keshava, Anup Ramachandran, K A Balasubramanian, Ian Mackie, Jude J Fleming, Elwyn Elias, Chundamannil E Eapen
BACKGROUND AND AIMS: Idiopathic noncirrhotic intrahepatic portal hypertension (NCIPH), a chronic microangiopathy of the liver caused by arsenicosis from use of contaminated groundwater, was reported from Asia. This study aimed to see, if in the twenty-first century, arsenicosis was present in NCIPH patients at our hospital and, if present, to look for groundwater contamination by arsenic in their residential locality. METHODS: Twenty-seven liver biopsy proven NCIPH patients, 25 portal hypertensive controls with hepatitis B or C related cirrhosis and 25 healthy controls, matched for residential locality, were studied...
May 2016: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/27190788/heavy-metal-contamination-in-groundwater-around-industrial-estate-vs-residential-areas-in-coimbatore-india
#19
K Mohankumar, V Hariharan, N Prasada Rao
INTRODUCTION: Water is the vital resource, necessary for all aspects of human and ecosystem survival and health. Depending on the quality, bore water may be used for human consumption, irrigation purposes and livestock watering. The quality of bore water can vary widely depending on the quality of ground water that is its source. Pollutants are being added to the ground water system through human and natural processes. Solid waste from industrial units is being dumped near the factories, which react with percolating rainwater and reaches the ground water...
April 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27189251/efficient-artificial-mineralization-route-to-decontaminate-arsenic-iii-polluted-water-the-tooeleite-way
#20
Arindam Malakar, Bidisa Das, Samirul Islam, Carlo Meneghini, Giovanni De Giudici, Marco Merlini, Yury V Kolen'ko, Antonella Iadecola, Giuliana Aquilanti, Somobrata Acharya, Sugata Ray
Increasing exposure to arsenic (As) contaminated ground water is a great threat to humanity. Suitable technology for As immobilization and removal from water, especially for As(III) than As(V), is not available yet. However, it is known that As(III) is more toxic than As(V) and most groundwater aquifers, particularly the Gangetic basin in India, is alarmingly contaminated with it. In search of a viable solution here, we took a cue from the natural mineralization of Tooeleite, a mineral containing Fe(III) and As(III)ions, grown under acidic condition, in presence of SO4(2-) ions...
2016: Scientific Reports
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