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chromium and nickel toxicity

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https://www.readbyqxmd.com/read/28412307/the-9th-conference-on-metal-toxicity-and-carcinogenesis-the-conference-overview
#1
James T F Wise, Lei Wang, Zhuo Zhang, Xianglin Shi
Heavy metals, such as arsenic, chromium, cadmium, nickel, mercury, and uranium are known to cause many human diseases and health complications after occupational or environmental exposure. Consequently, metals are environmental health concerns. This manuscript is an overview of the 9th Conference on Metal Toxicity and Carcinogenesis held in October 2016 in Lexington, Kentucky. Since 2000, this biennial meeting brings together experts in the field to discuss current and prospective research in an effort to advance research pertaining to metal toxicity and carcinogenesis...
April 12, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28342047/blood-toxic-metals-and-hemoglobin-levels-in-mexican-children
#2
Guadalupe López-Rodríguez, Marcos Galván, Marco González-Unzaga, Juan Hernández Ávila, M Pérez-Labra
Metal toxicity can cause hematologic abnormalities and hemolysis. To evaluate the relationship of anemia with metal contamination in children, the following elements were quantified in dry blood: silicon, chromium, lead, titanium, vanadium, nickel, arsenic, manganese, and cadmium. A total of 88 samples of anemic children and 208 of non-anemic children aged 6-12 years were analyzed. Lead (35.1%), chromium (24.3%), vanadium (24.3%), nickel (45.6%), and silicon (48.6%) were identified in the samples, with titanium only detected in anemic children...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28332950/spatiotemporal-trend-analysis-of-metal-concentrations-in-sediments-of-a-residential-california-stream-with-toxicity-and-regulatory-implications
#3
Lenwood W Hall, Ronald D Anderson, William D Killen
The objective of this study was to determine if concentrations of arsenic, cadmium, chromium, copper, lead, nickel and zinc measured in the sediments of a residential stream in California (Pleasant Grove Creek) have changed temporally or spatially from 2006 to 2016. Threshold Effect Levels (TELs), conservative ecological effects benchmarks, and exceedances for the seven metals were also evaluated over the 11-year time period to provide insight into potential metal toxicity to resident benthic communities. In addition, the bioavailability of metals in sediments was also determined by calculating Simultaneous Extracted Metal/Acid Volatle Sulfide (SEM/AVS) ratios to allow an additional assessment of toxicity...
March 23, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28284653/framework-for-estimating-toxic-releases-from-the-application-of-manure-on-agricultural-soil-national-release-inventories-for-heavy-metals-in-2000-2014
#4
Alexandra Leclerc, Alexis Laurent
Livestock manure is commonly applied on agricultural land for its fertilising properties. However, the presence of toxic substances in animal manure such as pathogens, antibiotics and heavy metals, can result in damages to ecosystems and human health. To date, although relevant for policy-making, e.g. regulation framing, their releases to agricultural land have been incompletely and inconsistently quantified at global and national scales. Here, we thus developed a generic framework for estimating such releases based on the quantities of manure applied and concentrations of toxic substances...
March 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28237220/impacts-of-iron-and-steelmaking-facilities-on-soil-quality
#5
Vladimir Strezov, Chandrakant Chaudhary
Iron and steel are highly important materials used in a wide range of products with important contribution to the economic development. The processes for making iron and steel are energy intensive and known to contribute to local pollution. Deposition of the metals may also have adverse impacts on soil quality, which requires detailed assessment. The aim of this study was to investigate the impacts of iron and steelmaking facilities on the local soil quality. Soil samples were collected in the vicinity of two steelmaking sites in Australia, one based on blast furnace steelmaking operation, while the second site was based on electric arc furnace steel recycling...
February 22, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28195202/application-of-pristine-and-doped-sno2-nanoparticles-as-a-matrix-for-agro-hazardous-material-organophosphate-detection
#6
Naushad Khan, Taimur Athar, H Fouad, Ahmad Umar, Z A Ansari, S G Ansari
With an increasing focus on applied research, series of single/composite materials are being investigated for device development to detect several hazardous, dangerous, and toxic molecules. Here, we report a preliminary attempt of an electrochemical sensor fabricated using pristine Ni and Cr-doped nano tin oxide material (SnO2) as a tool to detect agro-hazardous material, i.e. Organophosphate (OP, chlorpyrifos). The nanomaterial was synthesized using the solution method. Nickel and chromium were used as dopant during synthesis...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28153528/incorporating-toxcast-and-tox21-datasets-to-rank-biological-activity-of-chemicals-at-superfund-sites-in-north-carolina
#7
Sloane K Tilley, David M Reif, Rebecca C Fry
BACKGROUND: The Superfund program of the Environmental Protection Agency (EPA) was established in 1980 to address public health concerns posed by toxic substances released into the environment in the United States. Forty-two of the 1328 hazardous waste sites that remain on the Superfund National Priority List are located in the state of North Carolina. METHODS: We set out to develop a database that contained information on both the prevalence and biological activity of chemicals present at Superfund sites in North Carolina...
April 2017: Environment International
https://www.readbyqxmd.com/read/28127691/toxic-metals-in-tissues-of-fishes-from-the-black-sea-and-associated-human-health-risk-exposure
#8
Gabriel Plavan, Oana Jitar, Carmen Teodosiu, Mircea Nicoara, Dragos Micu, Stefan-Adrian Strungaru
The anthropogenic activities in the Black Sea area are responsible for toxic metal contamination of sea food products. In this study, several toxic metals: cadmium, lead, nickel, chromium, and copper were quantified in different tissues (digestive tract, muscle, skeleton, skin) of nine fish species (Neogobius melanostomus, Belone belone, Solea solea, Trachurus mediterraneus ponticus, Sardina pilchardus, Engraulis encrasicolus, Pomatomus saltatrix, Sprattus sprattus, Scorpaena porcus) by using atomic absorption spectrometer with a high-resolution continuum source and graphite furnace technique (HR-CS GF-AAS), and the risk of fish meat consumption by the young human population was evaluated...
March 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28094156/removal-of-toxic-metals-during-biological-treatment-of-landfill-leachates
#9
T Robinson
Progressive implementation of the European Water Framework Directive has resulted in substantial changes in limits for discharges of heavy metals both to watercourses, and to sewer. The objective of this paper is to provide original, real, full-scale data obtained for removal of metals during aerobic biological leachate treatment, and also to report on studies carried out to look at further trace metal removal. Polishing technologies examined and investigated include; the incorporation of ultrafiltration (UF) membranes into biological treatment systems, the use of ion exchange, and of activated carbon polishing processes...
May 2017: Waste Management
https://www.readbyqxmd.com/read/28019706/acute-sensitivity-of-the-vernal-pool-fairy-shrimp-branchinecta-lynchi-anostraca-branchinectidae-and-surrogate-species-to-10-chemicals
#10
Chris D Ivey, John M Besser, Chris G Ingersoll, Ning Wang, D Christopher Rogers, Sandy Raimondo, Candice R Bauer, Edward J Hammer
Vernal pool fairy shrimp, Branchinecta lynchi, (Branchiopoda; Anostraca) and other fairy shrimp species have been listed as threatened or endangered under the US Endangered Species Act. Because few data exist about the sensitivity of Branchinecta spp. to toxic effects of contaminants, it is difficult to determine whether they are adequately protected by water quality criteria. A series of acute (24-h) lethality/immobilization tests was conducted with 3 species of fairy shrimp (B. lynchi, Branchinecta lindahli, and Thamnocephalus platyurus) and 10 chemicals with varying modes of toxic action: ammonia, potassium, chloride, sulfate, chromium(VI), copper, nickel, zinc, alachlor, and metolachlor...
March 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28018787/heavy-metal-accumulation-during-the-last-30%C3%A2-years-in-the-karnaphuli-river-estuary-chittagong-bangladesh
#11
Ai-Jun Wang, Ahmed Kawser, Yong-Hang Xu, Xiang Ye, Seema Rani, Ke-Liang Chen
Heavy metal contamination of aquatic environment has attracted global attention owing to its abundance, persistence, and environmental toxicity, especially in developing countries like Bangladesh. Five heavy metals, namely chromium (Cr), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) were investigated in surface and core sediments of the Karnaphuli River (KR) estuary in Chittagong, Bangladesh, in order to reveal the heavy metal contamination history in estuarine sediments and its response to catastrophic events and human activities...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27931767/blood-and-urinary-levels-of-metals-and-metalloids-in-the-general-adult-population-of-northern-france-the-imepoge-study-2008-2010
#12
Catherine Nisse, Romuald Tagne-Fotso, Mike Howsam, Camille Richeval, Laurence Labat, Ariane Leroyer
BACKGROUND: The assessment of human chemical risks related to occupational or environmental exposure to pollutants requires the use of both accurate exposure indicators and reference values. The objective of this study was to evaluate the blood and urinary levels of various metals and metalloids in a sample of adults aged 20-59 years of the general population of Northern France, a formerly heavily industrialised area that retains some industrial activity. METHODS: A cross-sectional study was conducted between 2008 and 2010, enrolling 2000 residents of Northern France...
October 3, 2016: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/27901646/the-time-dependent-health-and-biochemical-effects-in-rats-exposed-to-stainless-steel-welding-dust-and-its-soluble-form
#13
Tadeusz Halatek, Magdalena Stanislawska, Irena Kaminska, Malgorzata Cieslak, Radoslaw Swiercz, Wojciech Wasowicz
Welding processes that generate fumes containing toxic metals, such as hexavalent chromium (Cr(VI)), manganese (Mn), and nickel (Ni), have been implicated in lung injury, inflammation, and lung tumor promotion in animal models. The principal objective of this study was to determine the dynamics of toxic effects of inhalation exposure to morphologically rated welding dust from stainless steel welding and its soluble form in TSE System with a dynamic airflow. We assessed the pulmonary toxicity of welding dust in Wistar rats exposed to 60...
February 23, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/27858271/pilot-study-on-the-internal-exposure-to-heavy-metals-of-informal-level-electronic-waste-workers-in-agbogbloshie-accra-ghana
#14
Jürgen Wittsiepe, Torsten Feldt, Holger Till, Gerd Burchard, Michael Wilhelm, Julius N Fobil
Informal-level electronic waste (e-waste)-processing activities are performed at hotspots in developing countries such as India, China, and Ghana. These activities increase the ambient burden of heavy metals and contribute to the toxic exposure of the general population. However, few data exist on the internal exposure of populations involved in these informal activities and in close contact with fumes from the direct combustion of electronic waste products in these countries. Therefore, in a cross-sectional study design, we analyzed blood, urine, and hair samples from 75 e-waste workers residing in and/or working on a large e-waste recycling site in Agbogbloshie, Accra, Ghana, and compared the results against those of 40 individuals living in a suburb of Accra without direct exposure to e-waste recycling activities...
November 17, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27810679/e-cigarettes-as-a-source-of-toxic-and-potentially-carcinogenic-metals
#15
Catherine Ann Hess, Pablo Olmedo, Ana Navas-Acien, Walter Goessler, Joanna E Cohen, Ana Maria Rule
BACKGROUND AND AIMS: The popularity of electronic cigarette devices is growing worldwide. The health impact of e-cigarette use, however, remains unclear. E-cigarettes are marketed as a safer alternative to cigarettes. The aim of this research was the characterization and quantification of toxic metal concentrations in five, nationally popular brands of cig-a-like e-cigarettes. METHODS: We analyzed the cartomizer liquid in 10 cartomizer refills for each of five brands by Inductively Coupled Plasma Mass Spectrometry (ICP-MS)...
January 2017: Environmental Research
https://www.readbyqxmd.com/read/27778338/preliminary-investigation-of-mineral-content-of-pollen-collected-from-different-serbian-maize-hybrids-is-there-any-potential-nutritional-value
#16
Aleksandar Ž Kostić, Lazar M Kaluđerović, Biljana P Dojčinović, Miroljub B Barać, Vojka B Babić, Marina P Mačukanović-Jocić
BACKGROUND: Bee pollen has already proved to be a good supplement rich in content of iron and zinc. Studies about application of flower pollen in food industry and medicine have been started. Bearing in mind prevalence of maize as crop culture its pollen will be easily available. The mineral composition of pollen of seven Serbian maize hybrids was analyzed in order to establish its nutritional value and benefits of its implementation in the human diet using ICP method. RESULTS: Presence of twenty four different macro- (nine) and micronutrients (fifteen) was detected...
October 24, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27699830/acute-sensitivity-of-a-broad-range-of-freshwater-mussels-to-chemicals-with-different-modes-of-toxic-action
#17
Ning Wang, Christopher D Ivey, Christopher G Ingersoll, William G Brumbaugh, David Alvarez, Edward J Hammer, Candice R Bauer, Tom Augspurger, Sandy Raimondo, M Christopher Barnhart
Freshwater mussels, one of the most imperiled groups of animals in the world, are generally underrepresented in toxicity databases used for the development of ambient water quality criteria and other environmental guidance values. Acute 96-h toxicity tests were conducted to evaluate the sensitivity of 5 species of juvenile mussels from 2 families and 4 tribes to 10 chemicals (ammonia, metals, major ions, and organic compounds) and to screen 10 additional chemicals (mainly organic compounds) with a commonly tested mussel species, fatmucket (Lampsilis siliquoidea)...
March 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/27680988/contracaecum-sp-parasitizing-acestrorhynchus-lacustris-as-a-bioindicator-for-metal-pollution-in-the-batalha-river-southeast-brazil
#18
Lucas A R Leite, Natacha H O Pedro, Rodney K de Azevedo, Angela Kinoshita, Roseli F Gennari, Shigueo Watanabe, Vanessa D Abdallah
Pollution in aquatic ecosystems due to negative human activities remains a problem in both freshwater and marine environments and is an ongoing subject of research. Several studies have shown that some fish parasites can be used as a tool for biomonitoring because they demonstrate higher metal accumulation capacity compared to their host tissues. However, compared to acanthocephalans, information regarding the absorption mechanisms and accumulation rates in nematodes is relatively limited. Here, we evaluated the potential of larvae Contracaecum sp...
January 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27619645/uranium-in-well-drinking-water-of-kabul-afghanistan-and-its-effective-low-cost-depuration-using-mg-fe-based-hydrotalcite-like-compounds
#19
Masashi Kato, Mohammad Daud Azimi, Said Hafizullah Fayaz, Muhammad Dawood Shah, Md Zahirul Hoque, Nobuyuki Hamajima, Shoko Ohnuma, Tomomi Ohtsuka, Masao Maeda, Masafumi Yoshinaga
Toxic elements in drinking water have great effects on human health. However, there is very limited information about toxic elements in drinking water in Afghanistan. In this study, levels of 10 elements (chromium, nickel, copper, arsenic, cadmium, antimony, barium, mercury, lead and uranium) in 227 well drinking water samples in Kabul, Afghanistan were examined for the first time. Chromium (in 0.9% of the 227 samples), arsenic (7.0%) and uranium (19.4%) exceeded the values in WHO health-based guidelines for drinking-water quality...
December 2016: Chemosphere
https://www.readbyqxmd.com/read/27585269/performance-of-electroremediation-in-real-contaminated-sediments-using-a-big-cell-periodic-voltage-and-innovative-surfactants
#20
John N Hahladakis, Antonis Latsos, Evangelos Gidarakos
The present work focused on evaluating the electrokinetic (EK) treatment of real contaminated sediments with toxic metals and polycyclic aromatic hydrocarbons (PAHs), using a big laboratory EK cell, periodic voltage and recently tested non-ionic surfactants. The results indicated that the "day on-night off" application mode of voltage, in conjunction with the selected solubilising agents, favoured the overall EK process. Arsenic, nickel and chromium exhibited the highest removal percentages, obtaining 83%, 67% and 63%, respectively, while zinc and lead attained 54% and 41% at the maximum...
December 15, 2016: Journal of Hazardous Materials
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