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[PMID]:29424990
[Au] Autor:Loskutov DV; Khamitova RY
[Ti] Título:[The genetic component of chronic respiratory diseases in workers of foundry productions].
[So] Source:Gig Sanit;95(7):623-6, 2016.
[Is] ISSN:0016-9900
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:Review of the literature shows that currently there is an accumulation of data on the genetic determination of individual susceptibility to adverse industrial factors. Material of the research were high molecular DNA samples isolated from epithelial mouth scrapings in 99 foundry workers. Study of polymorphic variants of interleukin genes was performed by means of the analysis ofproducts of amplification of specific regions of the genome. Homozygous genotype TNF-a (-308A/G) was established to increase the relative risk of shaping of chronic respiratory diseases: with AA alleles - by 6.4 times and GG alleles - by 2.4 times, while the heterozygous genotype (AG) decreases - by 1. 9 times. Polymorphism of gene IL-1ß (+3953 T / C) had no significance for the development of respiratory disease. Genotyping interleukins, involved in the inflammatory responses of the bronchopulmonary tract, can be considered as an element ofprimary prevention in industries with a high risk for shaping of respiratory diseases.
[Mh] Termos MeSH primário: Metalurgia
Doenças Profissionais
Doenças Respiratórias
Fator de Necrose Tumoral alfa/genética
[Mh] Termos MeSH secundário: Adulto
Predisposição Genética para Doença
Seres Humanos
Hipersensibilidade/genética
Interleucina-1beta/genética
Masculino
Doenças Profissionais/epidemiologia
Doenças Profissionais/etiologia
Doenças Profissionais/genética
Polimorfismo Genético
Doenças Respiratórias/epidemiologia
Doenças Respiratórias/etiologia
Doenças Respiratórias/genética
Federação Russa/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (IL1B protein, human); 0 (Interleukin-1beta); 0 (Tumor Necrosis Factor-alpha)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180210
[St] Status:MEDLINE


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[PMID]:29424495
[Au] Autor:Bekmuhambetov EZ; Mamyrbaev AA; Dzharkenov TA
[Ti] Título:[Hygienic assessment of working conditions in the production of ferro-alloys].
[So] Source:Gig Sanit;95(6):545-8, 2016.
[Is] ISSN:0016-9900
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:This work is devoted to the study of conditions of the work of employees of the modern ferro-alloy production, which was performed in the framework of the evaluation of working places at the Open Joint-Stock Company «Ferrokhrom¼, which is part of Joint-Stock Transnational Company "Kazchrom". The studies were performed with account of the full range of the list of working places, both in the main and auxiliary shops. The work activity of the workers from leading professional groups was established to be conjugate of the impact of the complex of unfavorable factors of occupational environment and labor process. There are given comprehensive measures to improve working conditions and health maintenance in workers from leading professional groups.
[Mh] Termos MeSH primário: Ligas de Cromo
Compostos Ferrosos
Metalurgia
Doenças Profissionais
Saúde Pública/métodos
Local de Trabalho
[Mh] Termos MeSH secundário: Indicadores Básicos de Saúde
Seres Humanos
Cazaquistão/epidemiologia
Metalurgia/métodos
Metalurgia/organização & administração
Metalurgia/normas
Doenças Profissionais/epidemiologia
Doenças Profissionais/etiologia
Doenças Profissionais/prevenção & controle
Exposição Ocupacional/efeitos adversos
Exposição Ocupacional/prevenção & controle
Exposição Ocupacional/estatística & dados numéricos
Saúde da População/estatística & dados numéricos
Medição de Risco
Local de Trabalho/normas
Local de Trabalho/estatística & dados numéricos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chromium Alloys); 0 (Ferrous Compounds)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180210
[St] Status:MEDLINE


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[PMID]:29253825
[Au] Autor:Schinkel L; Lehner S; Knobloch M; Lienemann P; Bogdal C; McNeill K; Heeb NV
[Ad] Endereço:Empa, Swiss Federal Laboratories for Materials Testing and Research, Laboratory for Advanced Analytical Technologies, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland; ETH, Swiss Federal Institute of Technology, Institute of Biogeochemistry and Pollutant Dynamic, Universitätsstrasse 16, CH-8092 Z
[Ti] Título:Transformation of chlorinated paraffins to olefins during metal work and thermal exposure - Deconvolution of mass spectra and kinetics.
[So] Source:Chemosphere;194:803-811, 2018 Mar.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Chlorinated paraffins (CPs) are high production volume chemicals widely used as additives in metal working fluids. Thereby, CPs are exposed to hot metal surfaces which may induce degradation processes. We hypothesized that the elimination of hydrochloric acid would transform CPs into chlorinated olefins (COs). Mass spectrometry is widely used to detect CPs, mostly in the selected ion monitoring mode (SIM) evaluating 2-3 ions at mass resolutions R < 20'000. This approach is not suited to detected COs, because their mass spectra strongly overlap with CPs. We applied a mathematical deconvolution method based on full-scan MS data to separate interfered CP/CO spectra. Metal drilling indeed induced HCl-losses. CO proportions in exposed mixtures of chlorotridecanes increased. Thermal exposure of chlorotridecanes at 160, 180, 200 and 220 °C also induced dehydrohalogenation reactions and CO proportions also increased. Deconvolution of respective mass spectra is needed to study the CP transformation kinetics without bias from CO interferences. Apparent first-order rate constants (k ) increased up to 0.17, 0.29 and 0.46 h for penta-, hexa- and heptachloro-tridecanes exposed at 220 °C. Respective half-life times (τ ) decreased from 4.0 to 2.4 and 1.5 h. Thus, higher chlorinated paraffins degrade faster than lower chlorinated ones. In conclusion, exposure of CPs during metal drilling and thermal treatment induced HCl losses and CO formation. It is expected that CPs and COs are co-released from such processes. Full-scan mass spectra and subsequent deconvolution of interfered signals is a promising approach to tackle the CP/CO problem, in case of insufficient mass resolution.
[Mh] Termos MeSH primário: Alcenos/síntese química
Hidrocarbonetos Clorados/química
Parafina/química
[Mh] Termos MeSH secundário: Monitoramento Ambiental/métodos
Temperatura Alta
Hidrocarbonetos Clorados/análise
Cinética
Espectrometria de Massas/métodos
Metalurgia
Parafina/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alkenes); 0 (Hydrocarbons, Chlorinated); 8002-74-2 (Paraffin)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180228
[Lr] Data última revisão:
180228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171219
[St] Status:MEDLINE


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[PMID]:28858759
[Au] Autor:Mercorio R; Bonzini M; Angelici L; Iodice S; Delbue S; Mariani J; Apostoli P; Pesatori AC; Bollati V
[Ad] Endereço:EPIGET LAB, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Via san Barnaba 8, 20122 Milan, Italy.
[Ti] Título:Effects of metal-rich particulate matter exposure on exogenous and endogenous viral sequence methylation in healthy steel-workers.
[So] Source:Environ Res;159:452-457, 2017 11.
[Is] ISSN:1096-0953
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Inhaled particles have been shown to produce systemic changes in DNA methylation. Global hypomethylation has been associated to viral sequence reactivation, possibly linked to the activation of pro-inflammatory pathways occurring after exposure. This observation provides a rationale to investigate viral sequence (both exogenous and endogenous) methylation in association to metal-rich particulate matter exposure. To verify this hypothesis, we chose the Wp promoter of the Epstein-Barr Virus (EBV-Wp) and the promoter of the human-endogenous-retrovirus w (HERV-w), respectively as a paradigm of an exogenous and an endogenous retroviral sequence, to be investigated by bisulfite PCR Pyrosequencing. We enrolled 63 male workers in an electric furnace steel plant, exposed to high level of metal-rich particulate matter. RESULTS: Comparing samples obtained in the first day of a work week (time 0-baseline, after 2 days off work) and the samples obtained after 3 days of work (time 1-post exposure), the mean methylation of EBV-Wp was significantly higher at baseline compared to post-exposure (mean = 56.7%5mC; mean = 47.9%5mC; p-value = 0.009), whereas the mean methylation of HERV-w did not significantly differ. Individual exposure to inhalable particles and metals was estimated based on measures in all working areas and time spent by the study subjects in each area. In a regression model adjusted for age, body mass index and smoking, PM and metal components had a positive association with EBV-Wp methylation (i.e. PM10: ß = 5.99, p-value < 0.038; nickel: ß = 17.82, p-value = 0.02; arsenic: ß = 13.59, p-value < 0.015). CONCLUSIONS: The difference observed comparing baseline and post-exposure samples may be suggestive of a rapid change in EBV methylation induced by air particles, while correlation between EBV methylation and PM/metal exposure may represent a more stable adaptive mechanism. Future studies investigating a larger panel of viral sequences could better elucidate possible mechanisms and their role in pro-inflammatory pathways leading to systemic health effects.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/toxicidade
Metilação de DNA/efeitos dos fármacos
Metalurgia
Metais/toxicidade
Exposição Ocupacional
Material Particulado/toxicidade
[Mh] Termos MeSH secundário: Adulto
DNA Viral/metabolismo
Retrovirus Endógenos/efeitos dos fármacos
Retrovirus Endógenos/metabolismo
Herpesvirus Humano 4/efeitos dos fármacos
Herpesvirus Humano 4/metabolismo
Seres Humanos
Itália
Masculino
Meia-Idade
Reação em Cadeia da Polimerase
Regiões Promotoras Genéticas
Aço
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Air Pollutants); 0 (DNA, Viral); 0 (Metals); 0 (Particulate Matter); 12597-69-2 (Steel)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171120
[Lr] Data última revisão:
171120
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170901
[St] Status:MEDLINE


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[PMID]:28678801
[Au] Autor:Artioli G; Angelini I; Kaufmann G; Canovaro C; Dal Sasso G; Villa IM
[Ad] Endereço:Department of Geosciences, Università di Padova, Padova, Italy.
[Ti] Título:Long-distance connections in the Copper Age: New evidence from the Alpine Iceman's copper axe.
[So] Source:PLoS One;12(7):e0179263, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:25 years after the discovery in the Ötztal Italian Alps, the 5,300-year-old mummy keeps providing key information on human biological and medical conditions, aspects of everyday life and societal organization in the Copper Age. The hand axe found with the body of the Alpine Iceman is one of the rare copper objects that is firmly dated to the early Copper Age because of the radiocarbon dating of the axe wooden shaft. Here we report the measurement of the lead isotope ratios of the copper blade. The results unambiguously indicate that the source of the metal is the ore-rich area of Southern Tuscany, despite ample evidence that Alpine copper ore sources were known and exploited at the time. The experimental results are discussed within the framework of all the available coeval archaeometallurgical data in Central-Southern Europe: they show that the Alps were a neat cultural barrier separating distinct metal circuits. The direct evidence of raw metal or object movement between Central Italy and the Alps is surprising and provides a new perspective on long-distance relocation of goods and relationships between the early Copper Age cultures in the area. The result is in line with the recent investigations re-evaluating the timing and extent of copper production in Central Italy in the 4th millennium BC.
[Mh] Termos MeSH primário: Cobre/análise
Múmias
Datação Radiométrica/métodos
Armas
[Mh] Termos MeSH secundário: Altitude
Áustria
Cobre/química
Seres Humanos
Gelo
Itália
Metalurgia/métodos
Paleontologia/métodos
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ice); 789U1901C5 (Copper)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171006
[Lr] Data última revisão:
171006
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170706
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0179263


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[PMID]:28674757
[Au] Autor:Zhao L; Sun W; Li X; Ye Z; Huang J; Zhang G; Cai J
[Ad] Endereço:State Environmental Protection Key Laboratory of Eco-Industry, Northeastern University, Shenyang, Liaoning, 110819, China.
[Ti] Título:Assessment of particulate emissions from a sinter plant in steelmaking works in China.
[So] Source:Environ Monit Assess;189(8):368, 2017 Aug.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:In this paper, five particulate emission points from a sinter plant in China, including anthracite crusher, raw material blender, sinter strand, screener, and circular cooler, were selected for particle sampling. The particle size distribution, the toxic element content (As, Cd, Co, Cr, Cu, Ni, Pb, Ti, and Zn), and the morphology of the samples were determined by the gravimetric method, the ICP-OES, and the SEM-EDS, respectively. In addition, the gray relational analysis method was used to evaluate the rank of the particulate emission points in the sinter plant. The results show that the emission factor of PM , PM , and PM of the whole sintering process is 0.121, 0.075, and 0.039 kg/t-sinter, respectively. Furthermore, the total toxic element emission factor is 5282.49 mg/t-sinter. The sinter strand is the most important emitter and contributes 43.8% of PM , 53.3% of PM , 56.4% of PM , and 81.1% of total toxic element in the sinter plant. Nevertheless, particles emitted from the post-sintering process are non-negligible and contribute 48.8% of PM , 41.3% of PM , 38.5% of PM , and 15.5% of total toxic element in the sinter plant.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Monitoramento Ambiental
Metalurgia
Material Particulado/análise
[Mh] Termos MeSH secundário: China
Carvão Mineral/análise
Tamanho da Partícula
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Coal); 0 (Particulate Matter)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170705
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6053-9


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[PMID]:28647270
[Au] Autor:Liu W; Wang Y; Chen Y; Tao S; Liu W
[Ad] Endereço:Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China. Electronic address: wjliu0817@gmail.com.
[Ti] Título:Polycyclic aromatic hydrocarbons in ambient air, surface soil and wheat grain near a large steel-smelting manufacturer in northern China.
[So] Source:J Environ Sci (China);57:93-103, 2017 Jul.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The total concentrations and component profiles of polycyclic aromatic hydrocarbons (PAHs) in ambient air, surface soil and wheat grain collected from wheat fields near a large steel-smelting manufacturer in Northern China were determined. Based on the specific isomeric ratios of paired species in ambient air, principle component analysis and multivariate linear regression, the main emission source of local PAHs was identified as a mixture of industrial and domestic coal combustion, biomass burning and traffic exhaust. The total organic carbon (TOC) fraction was considerably correlated with the total and individual PAH concentrations in surface soil. The total concentrations of PAHs in wheat grain were relatively low, with dominant low molecular weight constituents, and the compositional profile was more similar to that in ambient air than in topsoil. Combined with more significant results from partial correlation and linear regression models, the contribution from air PAHs to grain PAHs may be greater than that from soil PAHs.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Monitoramento Ambiental
Hidrocarbonetos Aromáticos Policíclicos/análise
Poluentes do Solo/análise
[Mh] Termos MeSH secundário: China
Modelos Lineares
Metalurgia
Análise de Componente Principal
Solo/química
Aço
Triticum/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Polycyclic Aromatic Hydrocarbons); 0 (Soil); 0 (Soil Pollutants); 12597-69-2 (Steel)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170626
[St] Status:MEDLINE


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[PMID]:28623831
[Au] Autor:Wang J; Liu G; Liu H; Lam PKS
[Ad] Endereço:CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an 7100
[Ti] Título:Tracking historical mobility behavior and sources of lead in the 59-year sediment core from the Huaihe River using lead isotopic compositions.
[So] Source:Chemosphere;184:584-593, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A historical perspective of past 59 years (1955-2014) for contamination and isotopic composition of Pb in sediment core system of the Huaihe River, Huainan City, Anhui Province of China is presented. Detailed investigation regarding changes in Pb sources, enrichment factor, sequential extraction and isotopic analysis revealed that high Pb concentrations were detected along the core, especially during the first two decades (1955-1974). Large variations in Pb isotopic compositions were observed, with Pb/ Pb and Pb/ Pb values ranging from 1.1504-1.1694, and 2.0817-2.1380, respectively. Diverse Pb sources were identified for sediment contamination over the time. Among anthropogenic sources, metallurgic dust and leaded petrol were on top during 1955-1974, especially when the Great Leap Forward Movement (1958-1960) was in progress in China, the time numerous small industries were established without wastewater treatment facility. However, coal and coal combustion were recognized as the primary sources of Pb emissions for the recent four decades (1974-2014) due to tremendous increase of coal consumption for power and heat generation. Unleaded vehicle exhaust, waste incineration and industrial emission were also sources of Pb during the years 1974-2014. Our estimates based on geochemical and lead isotopic approaches have shown that anthropogenic Pb contributions varied from 4.35 to 92.01%, and 13.28-99.06%, respectively. Assessment of lead speciation indicated an overwhelming presence of reducible fraction (Fe-Mn hydro-(oxides)) in the sediment core, except during 1995-1997, which was thought to be affected by water pollution accidents caused by heavy rainfall.
[Mh] Termos MeSH primário: Sedimentos Geológicos/química
Chumbo/análise
Rios/química
[Mh] Termos MeSH secundário: China
Carvão Mineral/análise
Poeira/análise
Monitoramento Ambiental/métodos
Isótopos/análise
Metalurgia
Óxidos/análise
Emissões de Veículos/análise
Águas Residuais/análise
Poluição da Água/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coal); 0 (Dust); 0 (Isotopes); 0 (Oxides); 0 (Vehicle Emissions); 0 (Waste Water); 2P299V784P (Lead)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170618
[St] Status:MEDLINE


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[PMID]:28604767
[Au] Autor:Mirmohammadi S; Moghaddasi Y; Yazdani J; Yousefinejad R; Esfandyari Y; Gorgani M; Habibpour M
[Ad] Endereço:Mazandaran University of Medical Sciences, Sari, Iran (Molecular and Cellular Biology Research Center). seyedtaghim@gmail.com.
[Ti] Título:Correlation between airborne manganese concentration at the workstations in the iron foundry and manganese concentration in workers' blood.
[Ti] Título:Correlation between airborne manganese concentration at the workstations in the iron foundry and manganese concentration in workers' blood..
[So] Source:Med Pr;68(4):449-458, 2017 Jun 27.
[Is] ISSN:0465-5893
[Cp] País de publicação:Poland
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Manganese (Mn) used as raw material for melting process in the ferrous foundry is considered as hazardous neurotoxic substance because it accumulates in the central nervous system and may cause neurological disorders. The furnace-men and melting department workers are potentially exposed to manganese particles or fume in the workplace. The objective of the research has been to investigate the sources and levels of manganese exposure in the foundry by correlation of blood-manganese (B-Mn) and air-manganese (air-Mn) measurement. MATERIAL AND METHODS: Air-Mn and Mn of blood serum were measured involving workers who worked in a big-sized foundry during 1 year. The standard method of the Occupational Safety and Health Administration (OSHA) ID-121 was used for air and blood assessment and atomic absorption spectroscopy (AAS) was carried out for air and blood sample analysis. RESULTS: The air sampling results have revealed that there is a high exposure to manganese (4.5 mg/m3) in the workplace as compared to the National Institute for Occupational Safety and Health's (NIOSH) time weighted average (the reference time-weighted average (TWA) = 1 mg/m3). The average blood serum Mn concentration was 2.745 µg/l for subjects working for shorter than 3 months and 274.85 µg/l for subjects working 3-12 months. CONCLUSIONS: Against the research hypothesis there was no correlation between the air-Mn concentration and the B-Mn (serum) level of manganese in the serum of the exposed subjects. It may be due to short time of air sampling of manganese airborne particles, and a real-time monitoring of airborne manganese particles is suggested for any future study. Med Pr 2017;68(4):449-458.
[Mh] Termos MeSH primário: Poluentes Ocupacionais do Ar/sangue
Ferro
Manganês/toxicidade
Metalurgia
[Mh] Termos MeSH secundário: Adulto
Seres Humanos
Masculino
Manganês/sangue
Meia-Idade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants, Occupational); 42Z2K6ZL8P (Manganese); E1UOL152H7 (Iron)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171030
[Lr] Data última revisão:
171030
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170613
[St] Status:MEDLINE


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[PMID]:28542007
[Au] Autor:Brown SH; Chambers DB
[Ad] Endereço:*SHB Inc., Centennial, CO, USA; †ARCADIS Canada Ltd., Richmond Hill, Ontario, Canada; ARACDIS Canada LTD, 121 Granton Drive, Richmond Hill, Ontario, Canada L4B 3N4.
[Ti] Título:Uranium Mining and Norm in North America-Some Perspectives on Occupational Radiation Exposure.
[So] Source:Health Phys;113(1):13-22, 2017 Jul.
[Is] ISSN:1538-5159
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:All soils and rocks contain naturally occurring radioactive materials (NORM). Many ores and raw materials contain relatively elevated levels of natural radionuclides, and processing such materials can further increase the concentrations of naturally occurring radionuclides. In the U.S., these materials are sometimes referred to as technologically-enhanced naturally occurring radioactive materials (TENORM). Examples of NORM minerals include uranium ores, monazite (a source of rare earth minerals), and phosphate rock used to produce phosphate fertilizer. The processing of these materials has the potential to result in above-background radiation exposure to workers. Following a brief review of the sources and potential for worker exposure from NORM in these varied industries, this paper will then present an overview of uranium mining and recovery in North America, including discussion on the mining methods currently being used for both conventional (underground, open pit) and in situ leach (ISL), also referred to as In Situ Recovery (ISR), and the production of NORM materials and wastes associated with these uranium recovery methods. The radiological composition of the NORM products and wastes produced and recent data on radiological exposures received by workers in the North American uranium recovery industry are then described. The paper also identifies the responsible government agencies in the U.S. and Canada assigned the authority to regulate and control occupational exposure from these NORM materials.
[Mh] Termos MeSH primário: Metalurgia/estatística & dados numéricos
Mineração/estatística & dados numéricos
Exposição Ocupacional/estatística & dados numéricos
Resíduos Radioativos/estatística & dados numéricos
Urânio/análise
[Mh] Termos MeSH secundário: Metalurgia/tendências
Mineração/tendências
América do Norte
Exposição Ocupacional/prevenção & controle
Dose de Radiação
Urânio/isolamento & purificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Radioactive Waste); 4OC371KSTK (Uranium)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170818
[Lr] Data última revisão:
170818
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170526
[St] Status:MEDLINE
[do] DOI:10.1097/HP.0000000000000673



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