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https://www.readbyqxmd.com/read/28819080/a-survey-on-selection-use-maintenance-and-management-of-chemical-protective-gloves-at-workplaces-in-japan
#1
Isamu Kabe, Hiroko Tsuruoka, Takeshi Kochi, Yasuo Koga, Masafumi Eguchi, Tomomi Matsui, Rie Ito, Yoko Tokujitani, Hiroyuki Miyauchi, Shigeru Tanaka
OBJECTIVES: The aim of this study was to survey the selection, use, and maintenance of chemical protective gloves (CPGs) at real workplaces. METHODS: Subjects comprised 817 workers using CPGs at seven domestic manufacturing plants in Japan. We administered an anonymous questionnaire survey comprising the following aspect related to CPGs: environment of use, conditions of use, method of selection, knowledge/awareness pertaining to their use, method of use, precautionary measures associated with their use, maximum time of use, and maintenance...
August 17, 2017: Sangyō Eiseigaku Zasshi, Journal of Occupational Health
https://www.readbyqxmd.com/read/28810687/the-characterization-of-polycyclic-aromatic-hydrocarbons-in-northeastern-us-trucking-terminals
#2
Erica D Walker, Jaime E Hart, Eric Garshick, Jennifer M Cavallari, Mary E Davis, Thomas J Smith, Francine Laden
In recent years, significant attention has been given to polycyclic aromatic hydrocarbons (PAHs) exposures given their mutagenic and carcinogenic properties. However, levels of exposure and the key determinants of exposure are not well defined for the trucking industry. We measured ultrafine particle characteristics at 10 trucking terminals of varying operating size and location in the Northeast region of the United States using particle concentration counter and a surface area analyzer. Multivariate mixed-effects linear regression models were used to assess determinants of the concentration of total bound PAHs (tPAH), the total aerosol active surface area (AS), and the ratio tPAH/AS overall and individually within docks, trucking cabs, and administrative offices...
August 1, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28810150/occurrence-of-carbazoles-in-dust-and-air-samples-from-different-locations-in-germany
#3
Hermann Fromme, Wenying Mi, Thomas Lahrz, Martin Kraft, Bettina Aschenbrenner, Bianca Bruessow, Ralf Ebinghaus, Zhiyong Xie, Ludwig Fembacher
9H-carbazole is generated from incomplete combustion of diverse fossil fuels and biomass, in tobacco smoke and from industrial processes, while halogenated carbazoles have natural and anthropogenic sources. We analyzed 9H-carbazole and 14 halogenated carbazoles in dust samples from 14 schools, 13 daycare centers, and 13 residences, as well as 5 indoor air samples from residences in Munich, Germany. Overall, we present first data of various carbazoles in different indoor environments without visible combustion sources...
August 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28801706/seasonal-distribution-source-identification-and-toxicological-risk-assessment-of-polycyclic-aromatic-hydrocarbons-pahs-in-sediments-from-wadi-el-bey-watershed-in-tunisia
#4
Imen Gdara, Ines Zrafi, Catia Balducci, Angelo Cecinato, Ahmed Ghrabi
Surface sediments were collected from the Watershed of Wadi El Bey in Tunisia to evaluate the degree of polycyclic aromatic hydrocarbons (PAHs) contamination. Sediments were collected during different seasons in 14 sites that received wastes from domestic effluent, industrial discharge, and agricultural drainage wastes. Twenty-six individual PAHs were analyzed. The total PAH contents (Σ PAHs) in surface sediments showed wide variability, ranging from 6.89 ± 0.05 to 340 ± 0.1 ng g(-1). The 4-, 5-, and 6-ring compounds were the most abundant PAHs detected at the majority of sites...
August 11, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28799745/a-two-distinctly-separated-emission-colorimetric-nir-fluorescent-probe-for-fast-hydrazine-detection-in-living-cells-and-mice-upon-independent-excitations
#5
Zhengliang Lu, Wenlong Fan, Xiaomin Shi, Yanan Lu, Chunhua Fan
Hydrazine is carcinogenic and highly toxic so that it can lead to serious environmental contamination and serious health risks although it has been extensively used as an effective propellant and an important reactive base in industry. Thus, the development of two-emission NIR fluorescent probes for rapid detection of hydrazine with high selectivity and sensitivity is of significance and of great challenge in both biological and environmental sciences. Here, we report a two-emission colori-metric fluorescent probe for the specific detection of hydrazine based on hydrazinolysis reaction under physiological condi-tions...
August 11, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28798007/industrial-pollutants-and-nasopharyngeal-cancer-an-open-question
#6
Roberto Menicagli, Gianni Bolla, Laura Menicagli, Anastassia Esseiridou
INTRODUCTION AND OBJECTIVES: Nasopharyngeal Carcinoma represents 0.7% of the total cancer cases in the world with an ASR index of 1.7 and is widely associated with Epstein-Barr virus. It is not common in Italy (ASR index of 0.5) while in China (ASR 1.9), one third of the clinical cases are observed in Guangdong (ASR index 11.3). It is also quite common in Malaysia and Indonesia. The activation of the cancerogenesis process happens after the exposure to some environmental parameters that epidemiological studies have indicated with various dietary habits, mainly for salted fish consumption...
May 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28792740/selective-removal-of-nitrosamines-from-a-model-amine-carbon-capture-waterwash-using-low-cost-activated-carbon-sorbents
#7
Leland R Widger, Megan Combs, Amit R Lohe, Cameron A Lippert, Jesse G Thompson, Kunlei Liu
Nitrosamines generated in the amine solvent loop of post combustion carbon capture systems are potent carcinogens, and their emission could pose a serious threat to the environment or human health. Nitrosamine emission control strategies are critical for the success of amine-based carbon capture as the technology approaches industrial-scale deployment. Waterwash systems have been used to control volatile and aerosol emissions, including nitrosamines, from carbon capture plants, but it is still necessary to remove or destroy nitrosamines in the circulating waterwash to prevent their subsequent emission into the environment...
August 9, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28778112/-soft-tissue-fillers-state-of-the-art-and-future-perspectives
#8
Matthias M Aitzetmüller, Inesa Sukhova, Georg M Huemer, Hans-Guenther Machens, Jan-Thorsten Schantz, Dominik Duscher
In addition to cosmetic use, filler materials are frequently employed for reconstruction of contour defects. Scars and tissue defects after accidents, surgery and irradiation are also ideal indications for injectables. The ideal filler should be easy to inject, easy to form, and should remain in the body as long as possible. It should neither be allergenic or carcinogenic nor susceptible to infections or biofilms, but still potentially reversible, temperature-stable, and cheap. There is still no augmentation material that fulfils all of these criteria...
August 4, 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28776190/human-health-risks-assessment-associated-with-polychlorinated-biphenyls-pcbs-in-soil-from-different-contaminated-areas-of-mexico
#9
Iván N Pérez-Maldonado, Ángeles C Ochoa Martínez, Tania Ruíz-Vera, Sandra T Orta-García, José A Varela-Silva
Recent studies have documented environmental contamination by PCBs in soil from different areas in Mexico (industrial, mining, and urban sites). However, the real significance of that soil contamination has not been established. Therefore, the aim of this study was to perform a human health risk assessment (Monte Carlos simulation) to evaluate the probable toxic effects of soils contaminated with PCBs on children in four sites in Mexico. A high non-carcinogenic risk (total nHQ = 1.1E+01; if nHQ ≥1, hazardous health effects cannot be ruled out) was found in Alpuyeca, Morelos, Mexico...
August 3, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28774830/a-physiologically-based-toxicokinetic-model-for-inhaled-ethylene-and-ethylene-oxide-in-mouse-rat-and-human
#10
Johannes Georg Filser, Dominik Klein
The olefin ethylene (ET) is the largest volume organic chemical. Mammals metabolize ET to ethylene oxide (EO), another important industrial chemical. The epoxide alkylates hemoglobin (Hb) and DNA and has mutagenic and carcinogenic properties. In order to estimate the EO burden in mice, rats, and humans resulting from inhalation exposure to gaseous ET or EO, a physiological toxicokinetic model was developed. It consists of the compartments lung, richly perfused tissues, kidneys, muscle, fat, arterial blood, venous blood, and liver containing the sub-compartment endoplasmic reticulum...
July 31, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28764111/spatial-distribution-ecological-and-health-risk-assessment-of-heavy-metals-in-marine-surface-sediments-and-coastal-seawaters-of-fringing-coral-reefs-of-the-persian-gulf-iran
#11
Ali Ranjbar Jafarabadi, Alireza Riyahi Bakhtiyari, Amirhossein Shadmehri Toosi, Catherine Jadot
Concentrations of 13 heavy metals (Al, Fe, Mn, Zn, Cu, Cr, Co, Ni, V, As, Cd, Hg, Pb) in 360 reef surface sediments (0-5 cm) and coastal seawater samples from ten coral Islands in the Persian Gulf were analyzed to determine their spatial distribution and potential ecological risks. Different sediment quality indices were applied to assess the surface sediment quality. The mean concentrations of metals in studied sediments followed the order: Al > Fe > Ni > V > Mn > Zn > Cu > Cr > Co > As > Cd > Pb > As...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28723190/in-search-of-the-ultimate-benzene-sensor-the-etqxbox-solution
#12
Jakub W Trzciński, Roberta Pinalli, Nicolò Riboni, Alessandro Pedrini, Federica Bianchi, Stefano Zampolli, Ivan Elmi, Chiara Massera, Franco Ugozzoli, Enrico Dalcanale
In this work we report a comprehensive study leading to the fabrication of a prototype sensor for environmental benzene monitoring. The required high selectivity and ppb-level sensitivity are obtained by coupling a silicon-integrated concentration unit containing the specifically designed EtQxBox cavitand to a miniaturized PID detector. In the resulting stand-alone sensor, the EtQxBox receptor acts at the same time as highly sensitive preconcentrator for BTEX and GC-like separation phase, allowing for the selective desorption of benzene over TEX...
April 28, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28718158/the-extent-of-heavy-metal-pollution-and-their-potential-health-risk-in-topsoils-of-the-massively-urbanized-district-of-shanghai
#13
Syed Taseer Abbas Jaffar, Long-Zhu Chen, Hassan Younas
Urbanization and industrialization increase the concentrations of heavy metals in soils, which affect human health. A total of 127 topsoil samples were collected from the massively urbanized and industrialized district of Shanghai: Baoshan District. The sampling sites were isolated based on the land-use practice: industrial area, roadside area, residential area, and agricultural area. The absolute concentrations of heavy metals (Zn, Cr, Ni, Mn, Cu, Pb, and Cd) were determined using atomic absorption spectrometry and compared with Shanghai and the National soil background values...
July 17, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28718094/distribution-source-analysis-and-ecological-risk-assessment-of-polycyclic-aromatic-hydrocarbons-in-the-typical-topsoil-of-the-issyk-kul-lake-basin
#14
Wen Liu, Long Ma, Jilili Abuduwaili, Yaoming Li
The concentration, distribution, compositional characteristics, and pollution sources of 16 polycyclic aromatic hydrocarbons (PAHs) in the topsoil of Issyk-Kul Lake Basin were studied, and their ecological risks were evaluated in this paper. The total concentration of the 16 PAHs was 68.58-475.95 ng g(-1), with an average of 134.45 ng g(-1). Four-ring PAHs accounted for 43.2% of the total PAHs, two- and three-ring PAHs accounted for 39.4%, and five- and six-ring PAHs accounted for 15.8%. The total concentration of the seven carcinogenic PAHs was 7...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28710990/biomarkers-of-oxidative-stress-and-health-risk-assessment-of-heavy-metal-contaminated-aquatic-and-terrestrial-organisms-by-oil-extraction-industry-in-ogale-nigeria
#15
Sunny O Abarikwu, Eka B Essien, Oreva-Oghene Iyede, Kingsley John, Chidimma Mgbudom-Okah
Ogale community in Rivers State, Nigeria is characterized by crude-oil contamination of its land resources. The present study aimed to evaluate the health risk and metal (Cd, Pb, Zn, Cr, and Ni) contamination level of the vegetable (Telfairia occidentalis), snail (Achatina achatina) and the catfish (Clarias gariepinus) collected from Ogale community. Samples collected from Elele Alimini community, a less polluted area was used as control. Oxidative damage was evaluated in tissues of snail and in the liver of catfish...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28703960/antioxidative-properties-of-milk-protein-preparations-fermented-by-polish-strains-of-lactobacillus-helveticus
#16
Katarzyna W Skrzypczak, Waldemar Z Gustaw, Ewa D Jabłońska-Ryś, Monika Michalak-Majewska, Aneta Sławińska, Wojciech P Radzki, Klaudia M Gustaw, Adam D Waśko
BACKGROUND: The increasing significance of food products containing substances with antioxidative activi- ties is currently being observed. This is mainly due to the fact that pathogenic changes underlying some diseases are related to the carcinogenic effects of free radicals. Antioxidative compounds play an important role in supporting and enhancing the body’s defense mechanisms, which is useful in preventing some civili- zation diseases. Unfortunately, it has been already proved that some synthetic antioxidants pose a potential risk in vivo...
April 2017: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28693886/investigation-of-the-presence-in-human-urine-of-mercapturic-acids-derived-from-phenanthrene-a-representative-polycyclic-aromatic-hydrocarbon
#17
Guang Cheng, Adam T Zarth, Pramod Upadhyaya, Peter W Villalta, Silvia Balbo, Stephen S Hecht
Polycyclic aromatic hydrocarbons (PAH) are environmental carcinogens implicated as causes of cancer in certain industrial settings and in cigarette smokers. PAH require metabolic activation to exert their carcinogenic effects. One widely accepted pathway of metabolic activation proceeds through formation of "bay region" diol epoxides which are highly reactive with DNA and can cause mutations. Phenanthrene (Phe) is the simplest PAH with a bay region and an excellent model for the study of PAH metabolism. In previous studies in which [D10]Phe was administered to smokers, we observed higher levels of [D10]Phe-tetraols derived from [D10]Phe-diol epoxides in subjects who were null for the glutathione-S-transferase M1 (GSTM1) gene...
July 8, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28693106/polycyclic-aromatic-hydrocarbons-contamination-in-surface-soil-of-china-a-review
#18
REVIEW
Pei Zhang, Yinguang Chen
This paper reviews the concentration, distribution, source, and potential risk of polycyclic aromatic hydrocarbons (PAHs) in surface soils of China through analysis of data from >6000 surface soil samples in nearly 100 references. The mean value of total 16 PAHs was 730ng·g(-1) in surface soil in China, a relatively lower or moderate level than other countries. Based on the Maliszewska-Kordybach classification criteria, the proportions of heavily contaminated, contaminated, weakly contaminated, and non-contaminated soil samples were 21...
July 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28685341/assessment-of-the-potential-health-risks-of-heavy-metals-in-soils-in-a-coastal-industrial-region-of-the-yangtze-river-delta
#19
Bifeng Hu, Jiayu Wang, Bin Jin, Yan Li, Zhou Shi
Soil heavy metal contamination is a serious environmental problem. Human beings may be directly exposed to heavy metals in soils through the inhalation of soil particles, dermal contact, and oral ingestion, which can seriously threaten health. This study assesses the health risks associated with heavy metals in soils by determining the concentrations of eight heavy metals (Cr, Pb, Cd, Hg, As, Cu, Zn, and Ni) based on 2051 surface-soil samples collected from the southern Yangtze River Delta of China. The mean concentrations were higher than the corresponding background values in Zhejiang Province and China as a whole, indicating an accumulation of heavy metals...
July 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28685330/occurrence-and-risk-assessment-of-phthalate-esters-paes-in-agricultural-soils-of-the-sanjiang-plain-northeast-china
#20
He Wang, Hong Liang, Da-Wen Gao
This study looks at the pollution status of six priority control phthalate esters (PAEs) under different cultivation of agricultural soils in the Sanjiang Plain, northeast China. Results show the total concentration of PAEs ranged from 162.9 to 946.9 μg kg(-1) with an average value of 369.5 μg kg(-1). PAE concentrations in three types of cultivated soils exhibited decreasing order paddy field (532.1 ± 198.1 μg kg(-1)) > vegetable field (308.2 ± 87.5 μg kg(-1)) > bean field (268.2 ± 48...
July 6, 2017: Environmental Science and Pollution Research International
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