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nickel toxicity

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https://www.readbyqxmd.com/read/28433597/prediction-of-toxicity-of-zinc-and-nickel-mixtures-to-artemia-sp-at-various-salinities-from-additivity-to-antagonism
#1
Évila Pinheiro Damasceno, Lívia Pitombeira de Figuerêdo, Marcionília Fernandes Pimentel, Susana Loureiro, Letícia Veras Costa-Lotufo
Few studies have examined the toxicity of metal mixtures to marine organisms exposed to different salinities. The aim of the present study was to investigate the acute toxicity of zinc and nickel exposures singly and in combination to Artemia sp. under salinities of 10, 17, and 35 psu. The mixture concentrations were determined according to individual toxic units (TUs) to follow a fixed ratio design. Zinc was more toxic than nickel, and both their individual toxicities were higher at lower salinities. These changes in toxicity can be attributed to the Biotic Ligand Model (BLM) rather than to metal speciation...
April 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28412490/serpentine-soils-affect-heavy-metal-tolerance-but-not-genetic-diversity-in-a-common-mediterranean-ant
#2
Filippo Frizzi, Alberto Masoni, Mine Çelikkol, Enrico Palchetti, Claudio Ciofi, Guido Chelazzi, Giacomo Santini
Natural habitats with serpentine soils are rich in heavy metal ions, which may significantly affect ecological communities. Exposure to metal pollutants results, for instance, in a reduction of population genetic diversity and a diffused higher tolerance towards heavy metals. In this study, we investigated whether chronic exposure to metals in serpentine soils affect accumulation patterns, tolerance towards metal pollutants, and genetic diversity in ants. In particular, we studied colonies of the common Mediterranean ant, Crematogaster scutellaris, along a contamination gradient consisting of two differently contaminated forests and a reference soil with no geogenic contamination...
April 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/28412307/the-9th-conference-on-metal-toxicity-and-carcinogenesis-the-conference-overview
#3
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/28379009/general-and-mild-nickel-catalyzed-cyanation-of-aryl-heteroaryl-chlorides-with-zn-cn-2-key-roles-of-dmap
#4
Xingjie Zhang, Aiyou Xia, Haoyi Chen, Yuanhong Liu
A new and general nickel-catalyzed cyanation of hetero(aryl) chlorides using less toxic Zn(CN)2 as the cyanide source has been developed. The reaction relies on the use of inexpensive NiCl2·6H2O/dppf/Zn as the catalytic system and DMAP as the additive, allowing the cyanation to occur under mild reaction conditions (50-80 °C) with wide functional group tolerance. DMAP was found to be crucial for successful transformation, and the reaction likely proceeds via a Ni(0)/Ni(II) catalysis based on mechanistic studies...
April 5, 2017: Organic Letters
https://www.readbyqxmd.com/read/28372752/ultrasensitive-and-selective-4-aminophenol-chemical-sensor-development-based-on-nickel-oxide-nanoparticles-decorated-carbon-nanotube-nanocomposites-for-green-environment
#5
Mohammad Musarraf Hussain, Mohammed M Rahman, Abdullah M Asiri
Nickel oxide nanoparticles decorated carbon nanotube nanocomposites (NiO·CNT NCs) were prepared in a basic medium by using facile wet-chemical routes. The optical, morphological, and structural properties of NiO·CNT NCs were characterized using Fourier transformed infra-red (FT-IR), Ultra-violet visible (UV/Vis) spectroscopy, field-emission scanning electron microscopy (FESEM), X-ray energy dispersed spectroscopy (XEDS), X-ray photoelectron spectroscopy (XPS), and powder X-ray diffraction (XRD) methods. Selective 4-aminophenol (4-AP) chemical sensor was developed by a flat glassy carbon electrode (GCE, surface area: 0...
March 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28371710/redox-chemistry-of-nickel-in-soils-and-sediments-a-review
#6
Jörg Rinklebe, Sabry M Shaheen
Knowledge on the redox geochemistry of Ni is behind in comparison to other heavy metals. Hence, this article reviews the direct and indirect impact of redox potential (EH) on mobilization and release dynamics of Ni in soils and sediments across the world. Nickel can show a different behavior in response to EH. Mobilization of Ni increased at low EH in various soils; however, oxic conditions can lead to an increased mobilization of Ni in other soils. Those differences occur because the mobilization of Ni is often indirectly affected by EH, e...
July 2017: Chemosphere
https://www.readbyqxmd.com/read/28342047/blood-toxic-metals-and-hemoglobin-levels-in-mexican-children
#7
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/28340386/constructed-ils-coated-porous-magnetic-nickel-cobaltate-hexagonal-nanoplates-sensing-materials-for-the-simultaneous-detection-of-cumulative-toxic-metals
#8
Yuanyuan Dong, Lei Zhang
The different morphologies of magnetic nickel cobaltate (NiCo2O4) electrocatalysts, consisting of nanoparticles (NiCo2O4-N), nanoplates (NiCo2O4-P) and microspheres (NiCo2O4-S) were fabricated. It was found that the electrocatalytic properties of the sensing materials were strongly dependent on morphology and specific surface area. The porous NiCo2O4 hexagonal nanoplates coupled with ILs as modified materials (ILs@NiCo2O4-P) for the simultaneous determination of thallium (Tl(+)), lead (Pb(2+)) and copper (Cu(2+)), exhibited high sensitivity, long-time stability and good repeatability...
March 18, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28332950/spatiotemporal-trend-analysis-of-metal-concentrations-in-sediments-of-a-residential-california-stream-with-toxicity-and-regulatory-implications
#9
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/28316774/glutathione-metabolism-in-the-prefrontal-brain-of-adults-with-high-functioning-autism-spectrum-disorder-an-mrs-study
#10
Dominique Endres, Ludger Tebartz van Elst, Simon A Meyer, Bernd Feige, Kathrin Nickel, Anna Bubl, Andreas Riedel, Dieter Ebert, Thomas Lange, Volkmar Glauche, Monica Biscaldi, Alexandra Philipsen, Simon J Maier, Evgeniy Perlov
BACKGROUND: Autism spectrum disorder (ASD) is a neurodevelopmental disease characterized by difficulties in social communication, unusually restricted, repetitive behavior and interests, and specific abnormalities in language and perception. The precise etiology of ASD is still unknown and probably heterogeneous. In a subgroup of patients, toxic environmental exposure might lead to an imbalance between oxidative stress and anti-oxidant systems. Previous serum and postmortem studies measuring levels of glutathione (GSH), the main cellular free radical scavenger in the brain, have supported the hypothesis that this compound might play a role in the pathophysiology of autism...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28316474/determination-of-aflatoxin-m1-and-heavy-metals-in-infant-formula-milk-brands-available-in-pakistani-markets
#11
Saeed Akhtar, Muhammad Arif Shahzad, Sang-Ho Yoo, Amir Ismail, Aneela Hameed, Tariq Ismail, Muhammad Riaz
Aflatoxin M1 (AFM1) after its bioconversion from aflatoxin B1 in animal liver becomes the part of milk while heavy metals get entry into milk and milk products during handling in the supply chain. Aflatoxin M1 and heavy metals being toxic compounds are needed to be monitored continuously to avoid any ailments among consumers of foods contaminated with such toxicants. Thirteen commercially available infant formula milk (IFM) brands available in Pakistani markets were analyzed for the quantitative determination of AFM1 and heavy metals through ELISA and atomic absorption spectrophotometer, respectively...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28314195/treatment-of-contaminated-greywater-using-pelletised-mine-water-sludge
#12
Suhail N Abed, Suhad A Almuktar, Miklas Scholz
Precipitated sludge (ochre) obtained from a mine water treatment plant was considered as an adsorbent substance for pollutants, since ochre is relatively free from problematic levels of toxic elements, which could impair on the quality of water to be treated. Artificially created ochre pellets from mixing Portland cement with raw ochre sludge were utilised to remediate either high (HC) or low (LC) contaminated synthetic greywater (SGW) in mesocosm-scale stabilisation ponds at 2-day and 7-day contact times under real weather conditions in Salford...
March 14, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28300623/derivation-of-an-oral-toxicity-reference-value-for-nickel
#13
Lynne T Haber, Hudson K Bates, Bruce C Allen, Melissa J Vincent, Adriana R Oller
Nickel (Ni) is in the earth's crust and can be found in environmental compartments such as water, soil, and air, as well as food. This paper presents an assessment of the oral nickel toxicity data in support of non-cancer health-based oral exposure limits or toxicity reference values (TRVs). This paper derives TRVs for three populations of interest: adults, toddlers, and people who have been dermally sensitized to nickel. The adult/lifetime TRV of 20 μg Ni/kg-day is based on post-implantation loss/perinatal mortality in a 2-generation reproductive study in rats...
March 11, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28295556/core-chemistry-influences-the-toxicity-of-multi-component-metal-oxide-nanomaterials-lithium-nickel-manganese-cobalt-oxide-and-lithium-cobalt-oxide-to-daphnia-magna
#14
Jared Bozich, Mimi Hang, Robert Hamers, Rebecca Klaper
Lithium intercalation compounds such as lithium nickel manganese cobalt oxide (NMC) and lithium cobalt oxide (LCO) are used extensively in lithium batteries. Because there is currently little economic incentive for recycling, chances are greater that batteries will end up in landfills or waste in the environment. In addition, the toxicity of these battery materials has not been traditionally part of the design process. Therefore, to determine the environmental impact and the possibility of alternative battery materials, representative complex battery nanomaterials, LCO and NMC, were synthesized and toxicity was assessed in Daphnia magna...
March 11, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28285048/green-reduction-of-reduced-graphene-oxide-with-nickel-tetraphenyl-porphyrin-nanocomposite-modified-electrode-for-enhanced-electrochemical-determination-of-environmentally-pollutant-nitrobenzene
#15
Subbiramaniyan Kubendhiran, Subramanian Sakthinathan, Shen-Ming Chen, P Tamizhdurai, K Shanthi, Chelladurai Karuppiah
Nitrobenzene (NB) is widely used in the manufacturing of different types of products and other aromatic chemicals. Moreover, it is highly toxic and environmental pollutant compound. Therefore, the detection of nitro aromatic compounds (NACs) has gained more attention in the field of sensor. This article describes the green reduction utilized to preparation of green reduced graphene oxide/nickel tetraphenyl porphyrin (GRGO/Ni-TPP) nanocomposite modified electrode for the determination of nitrobenzene (NB). The GRGO was prepared by environmentally friendly method and using caffeic acid (CA) as a reducing agent...
July 1, 2017: Journal of Colloid and Interface Science
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
#16
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/28238459/linking-sources-to-early-effects-by-profiling-urine-metabolome-of-residents-living-near-oil-refineries-and-coal-fired-power-plants
#17
Chi-Hsin Sally Chen, Tzu-Hsuen Yuan, Ruei-Hao Shie, Kuen-Yuh Wu, Chang-Chuan Chan
BACKGROUND: This study aims at identifying metabolic changes linking external exposure to industrial air toxics with oxidative stress biomarkers. METHODS: We classified 252 study subjects as 111 high vs. 141 low exposure subjects by the distance from their homes to the two main emission sources, oil refineries and coal-fired power plants. We estimated individual's external exposure to heavy metals and polycyclic aromatic hydrocarbons (PAHs) by dispersion and kriging models, respectively...
February 23, 2017: Environment International
https://www.readbyqxmd.com/read/28237220/impacts-of-iron-and-steelmaking-facilities-on-soil-quality
#18
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/28229018/-genomic-data-mining-of-the-marine-actinobacteria-streptomyces-sp-h-kf8-unveils-insights-into-multi-stress-related-genes-and-metabolic-pathways-involved-in-antimicrobial-synthesis
#19
Agustina Undabarrena, Juan A Ugalde, Michael Seeger, Beatriz Cámara
Streptomyces sp. H-KF8 is an actinobacterial strain isolated from marine sediments of a Chilean Patagonian fjord. Morphological characterization together with antibacterial activity was assessed in various culture media, revealing a carbon-source dependent activity mainly against Gram-positive bacteria (S. aureus and L. monocytogenes). Genome mining of this antibacterial-producing bacterium revealed the presence of 26 biosynthetic gene clusters (BGCs) for secondary metabolites, where among them, 81% have low similarities with known BGCs...
2017: PeerJ
https://www.readbyqxmd.com/read/28224666/refinement-and-cross-validation-of-nickel-bioavailability-in-pnec-pro-a-regulatory-tool-for-site-specific-risk-assessment-of-metals-in-surface-water
#20
Anja J Verschoor, Martina G Vijver, Jos P M Vink
The European Water Framework Directive prescribes that the environmental quality standards for nickel in surface waters should be based on bioavailable concentrations. Biotic ligand models (BLMs) are powerful tools to account for site-specific bioavailability within risk assessments. Several BLMs and simplified tools are available. For nickel, most of them are based on the same toxicity dataset and chemical speciation methodology as laid down in the 2008 European Union Environmental Risk Assessment Report (RAR)...
February 22, 2017: Environmental Toxicology and Chemistry
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