journal
MENU ▼
Read by QxMD icon Read
search

Archives of Environmental Contamination and Toxicology

journal
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
#1
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/28710502/indicators-of-marine-pollution-in-the-north-pacific-ocean
#2
Tanya M Brown, Hideshige Takada
The complex nature of ocean pollution underscores the utility in identifying and characterizing a limited number of "indicators" that enables scientists and managers to track trends over space and time. This paper introduces a special issue on indicators of marine pollution in the North Pacific Ocean and builds on a scientific session that was held at the North Pacific Marine Science Organization. The special issue highlights studies using a variety of indicators to provide insight into the identification of legacy and emerging contaminants, the ranking of priority pollutants from various sources, and the effects of contaminants on ecosystem health in the North Pacific Ocean...
July 14, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28710501/polycyclic-aromatic-hydrocarbons-pahs-and-hopanes-in-plastic-resin-pellets-as-markers-of-oil-pollution-via-international-pellet-watch-monitoring
#3
Bee Geok Yeo, Hideshige Takada, Junki Hosoda, Atsuko Kondo, Rei Yamashita, Mahua Saha, Thomas Maes
Oil pollution in the marine environment is an unavoidable problem due to chronic input from local sources, particularly in urban areas and oil spills. Oil pollution not only causes immediate physical damages to surrounding wildlife but also some components, including higher molecular weight PAHs, can persist in the environment for many years and pose insidious threats to the ecosystem. Long-term and nontargeted monitoring of oil pollution is important. This paper examines the ability of International Pellet Watch (IPW) for initial identification and monitoring of oil pollution by analysing PAHs and hopanes in plastic pellet samples collected globally by volunteers...
July 14, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28698978/concentration-of-12-metals-and-metalloids-in-the-blood-of-white-stork-ciconia-ciconia-basal-values-and-influence-of-age-and-gender
#4
Ana Raquel Maia, Francisco Soler-Rodriguez, Marcos Pérez-López
The white stork (Ciconia ciconia) is being increasingly used in biomonitoring programmes of environmental contaminants due to its growing population in Europe; however, studies on inorganic elements are scarce. The blood of 70 white storks was collected and analysed by inductively coupled plasma mass spectroscopy (ICP-MS) to determine the presence of the following elements: lead (Pb), mercury (Hg), arsenic (As), nickel (Ni), iron (Fe), zinc (Zn), copper (Cu), selenium (Se), manganese (Mn), chromium (Cr), cobalt (Co), and cadmium (Cd)...
July 11, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28689326/occurrence-and-distribution-of-organophosphate-esters-in-surface-soil-and-street-dust-from-chongqing-china-implications-for-human-exposure
#5
Ming-Jing He, Ting Yang, Zhi-Hao Yang, Qi Li, Shi-Qiang Wei
In the present study, the occurrence, concentrations, and distribution of organophosphate esters (OPEs) were studied in surface soil and street dust samples collected from different sites of Chongqing, a metropolitan city in western China. Furthermore, nondietary daily intakes (DIs) of OPEs only through dust ingestion absorption were assessed between toddlers and adults. The ∑OPEs contents ranged from 10.1 to 315 ng/g dw and from 348 to 1369 ng/g dw in surface soil and street dust samples, respectively, with tris (2-butoxyethyl) phosphate (TBOEP), the predominant OPEs in surface soil, whereas tris (chloroethyl) phosphate (TCEP) occupied a relatively high proportion in street dust samples...
July 8, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28687868/comparative-toxicity-of-two-chemical-dispersants-and-dispersed-oil-in-estuarine-organisms
#6
M E DeLorenzo, P B Key, K W Chung, E Pisarski, B Shaddrix, E F Wirth, P L Pennington, J Wade, M Franco, M H Fulton
Chemical dispersants can be a useful tool to mitigate oil spills. This study examined potential risks to sensitive estuarine species by comparing the toxicity of two dispersants (Corexit(®) EC9500A and Finasol(®) OSR 52) individually and in chemically enhanced water-accommodated fractions (CEWAFs) of Louisiana Sweet Crude oil. Acute toxicity thresholds and sublethal biomarker responses were determined in seven species (sheepshead minnow, grass shrimp, mysid, amphipod, polychaete, hard clam, mud snail). Comparing median lethal (LC50) values for the dispersants, Finasol was generally more toxic than Corexit and had greater sublethal toxicity (impaired embryonic hatching, increased lipid peroxidation, decreased acetylcholinesterase activity)...
July 7, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28687867/effect-of-multi-walled-carbon-nanotubes-on-metabolism-and-morphology-of-filamentous-green-microalgae
#7
Michele Munk, Humberto M Brandão, Claude Yéprémian, Alain Couté, Luiz O Ladeira, Nádia R B Raposo, Roberta Brayner
Multi-walled carbon nanotubes (MWCNTs) have potential applications in the industrial, agricultural, pharmaceutical, medical, and environmental remediation fields. However, many uncertainties exist regarding the environmental implications of engineered nanomaterials. This study examined the effect of the MWCNTs on metabolic status and morphology of filamentous green microalgae Klebsormidium flaccidum. Appropriate concentrations of MWCNT (1, 50, and 100 μg mL(-1)) were added to a microalgal culture in the exponential growth phase and incubated for 24, 48, 72, and 96 h...
July 7, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28668997/chemical-constituents-of-carbonaceous-and-nitrogen-aerosols-over-thumba-region-trivandrum-india
#8
Prashant Hegde, Kimitaka Kawamura
Aerosol filter samples collected at a tropical coastal site Thumba over Indian region were analysed for water-soluble ions, total carbon and nitrogen, organic carbon (OC), elemental carbon (EC), and water-soluble organic carbon/nitrogen and their sources for different seasons of the year. For the entire study period, the order of abundance of ions showed the dominance of secondary ions, such as SO4(2-), NO3(-), and NH4(+). On average, Mg(2+) (56%), K(+) (11%), SO4(2-) (8.8%), and Ca(2+) (8.1%) contributions were from maritime influence...
July 1, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28667423/endosulfan-short-chain-chlorinated-paraffins-sccps-and-octachlorostyrene-in-wildlife-from-greenland-levels-trends-and-methodological-challenges
#9
Katrin Vorkamp, Frank F Rigét, Rossana Bossi, Christian Sonne, Rune Dietz
Besides globally banned "legacy" persistent organic pollutants, other compounds might be present in Arctic wildlife, for which regulation was introduced recently (the insecticide endosulfan), is considered (short-chain chlorinated paraffins, SCCPs) or does not exist (octachlorostyrene, OCS, a byproduct of manufacturing and combustion processes involving chlorine). The purpose of this study was to analyze the time trend of endosulfan (1986-2012) in ringed seals and to address the levels of SCCPs and OCS in wildlife species from Greenland (black guillemot, glaucous gull, ringed seal, polar bear), while taking a critical standpoint to analytical methods typically applied...
June 30, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28664382/direct-determination-of-nimesulide-in-natural-waters-and-wastewater-by-cathodic-stripping-voltammetry
#10
Luciane Miranda, Vanessa C Pereira, Christiane S Machado, Yohandra R Torres, Vanessa E Dos Anjos, Sueli P Quináia
Pharmaceuticals are included in a group of compounds considered as contaminants of emerging concern (CECs) in environmental matrices. The quantification of CECs is typically accomplished using chromatographic methods that require several sample pretreatment steps. The current study proposes a voltammetric method to quantify directly nimesulide (NIM) in aqueous samples. The voltammetric parameters were optimized and chosen based on the profile of the voltammograms and peak current intensity. The adequacy of the analytical method was evaluated using validation criteria, such as accuracy, selectivity, linearity, detection, and quantification limits...
June 29, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28660298/standardize-or-diversify-experimental-conditions-in-ecotoxicology-a-case-study-on-herbicide-toxicity-to-larvae-of-two-anuran-amphibians
#11
Zsanett Mikó, János Ujszegi, Zoltán Gál, Attila Hettyey
Despite a steeply increasing number of ecotoxicological studies on the effects of pesticides on nontarget organisms, studies assessing the adequacy and reliability of different experimental approaches have remained scarce. We scrutinized effects of a glyphosate-based herbicide on larvae of two European anuran amphibians by estimating species-specific LC50 values, assessing how an additional stress factor may influence outcomes, and investigating whether replicate experiments yielded qualitatively the same results...
June 28, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28631032/occurrence-and-fate-of-organic-and-organometallic-pollutants-in-municipal-wastewater-treatment-plants-and-their-impact-on-receiving-waters-adour-estuary-france
#12
J Cavalheiro, O Zuloaga, A Prieto, H Preudhomme, D Amouroux, M Monperrus
To achieve a "Good Environmental Status by 2015," as demanded by the water framework directive, monitoring programs are needed to furnish data on target compounds. In this study, a first evaluation of influents and main emissions of 3 local wastewater treatment plants (WWTP) in the Adour estuary (southwest of France) was performed for 23 pollutants (10 musk fragrances, 5 alkylphenols, and 8 organometallics), as well as receiving estuarine water from the same area. High frequency of occurrence of these compounds was found in influents samples (musks: 22-100%; alkylphenols 11-100%; organometallics 0-100%) and effluents (musks: 0-100%; alkylphenols 0-100%; organometallics 0-100%)...
June 19, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28631031/metals-in-blood-and-eggs-of-green-sea-turtles-chelonia-mydas-from-nesting-colonies-of-the-northern-coast-of-the-sea-of-oman
#13
Mahmood Sinaei, Mehdi Bolouki
The green sea turtle (Chelonia mydas) has been a species of global concern for decades. In this study, heavy metals (mercury: Hg; Cadmium: Cd; Lead: Pb; Copper: Cu; and Zinc: Zn) were measured in blood and three egg fraction of green sea turtles nesting on the northern coast of Sea of Oman. Heavy metals concentrations in blood, yolk, albumen, and egg shell ranged between 0.16-36.78, 0.006-33.88, 0.003-4.02, and 0.002-6.85 μg/g (ww), respectively. According to the results, all heavy metals found in blood samples (n = 12) also were detected in the various parts of the eggs (n = 48)...
June 19, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28631030/the-impact-of-impoundment-on-mercury-bioaccumulation-in-fish-downstream-from-a-newly-constructed-reservoir-wujiang-river-southwest-china
#14
Sixin Li, Lianfeng Zhou, Jianbo Chang, Zhi Yang, Juxiang Hu, Wang Hongjun
Mercury concentrations in fish were investigated downstream from a newly impounded subtropical reservoir in August 2008. After 6-7 months of reservoir impoundment, mean mercury concentration in fish from downstream is significantly increased by 1.9 times. Not only carnivorous fish but also benthic fish had significantly higher total mercury concentrations than others. No significant correlation was found between total mercury concentrations and body length or weight of 13 fish species. Compared with the pre-impoundment, total mercury in fish from downstream is significantly increased by reservoir impoundment, but the increased rate is lower than those in subarctic and temperate areas...
June 19, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28601932/the-value-of-using-multiple-metrics-to-evaluate-pcb-exposure
#15
Megan C Archer, Amanda D Harwood, Samuel A Nutile, Kara E Huff Hartz, Marc A Mills, Jim E Garvey, Michael J Lydy
Current methods for evaluating exposure in ecosystems contaminated with hydrophobic organic contaminants typically focus on sediment exposure. However, a comprehensive environmental assessment requires a more holistic approach that not only estimates sediment concentrations, but also accounts for exposure by quantifying other pathways, such as bioavailability, bioaccumulation, trophic transfer potential, and transport of hydrophobic organic contaminants within and outside of the aquatic system. The current study evaluated the ability of multiple metrics to estimate exposure in an aquatic ecosystem...
June 10, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28550340/heat-and-bleach-a-cost-efficient-method-for-extracting-microplastics-from-return-activated-sludge
#16
Surya Sujathan, Ann-Kathrin Kniggendorf, Arun Kumar, Bernhard Roth, Karl-Heinz Rosenwinkel, Regina Nogueira
The extraction of plastic microparticles, so-called microplastics, from sludge is a challenging task due to the complex, highly organic material often interspersed with other benign microparticles. The current procedures for microplastic extraction from sludge are time consuming and require expensive reagents for density separation as well as large volumes of oxidizing agents for organic removal, often resulting in tiny sample sizes and thus a disproportional risk of sample bias. In this work, we present an improved extraction method tested on return activated sludge (RAS)...
May 26, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28534067/microplastics-in-sediment-cores-from-asia-and-africa-as-indicators-of-temporal-trends-in-plastic-pollution
#17
Yukari Matsuguma, Hideshige Takada, Hidetoshi Kumata, Hirohide Kanke, Shigeaki Sakurai, Tokuma Suzuki, Maki Itoh, Yohei Okazaki, Ruchaya Boonyatumanond, Mohamad Pauzi Zakaria, Steven Weerts, Brent Newman
Microplastics (<5 mm) were extracted from sediment cores collected in Japan, Thailand, Malaysia, and South Africa by density separation after hydrogen peroxide treatment to remove biofilms were and identified using FTIR. Carbonyl and vinyl indices were used to avoid counting biopolymers as plastics. Microplastics composed of variety of polymers, including polyethylene (PE), polypropylene (PP), polystyrene (PS), polyethyleneterphthalates (PET), polyethylene-polypropylene copolymer (PEP), and polyacrylates (PAK), were identified in the sediment...
May 22, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28528420/soil-or-dust-for-health-risk-assessment-studies-in-urban-environment
#18
M Gabarrón, A Faz, J A Acosta
To identify the best material (soil or dust) to be selected for health-risk assessment studies, road dust and urban soil from three cities with different population densities were collected, and size fractions were analysed for metal content (Pb, Zn, Cu, Cd, Cr, Co, and Ni). Results showed similar distribution of the size particles among cities, predominating fractions between 75 and 2000 μm in road dust and particles below 75 μm in soil. Metals were mainly bound to PM10 in both soil and road dust increasing the risk of adverse health effects, overall through inhalation exposure...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28528419/a-risk-based-characterization-of-sediment-contamination-by-legacy-and-emergent-contaminants-of-concern-in-coastal-british-columbia-canada
#19
Carmen Morales-Caselles, Jean-Pierre W Desforges, Neil Dangerfield, Peter S Ross
Sediments have long been used to help describe pollution sources, contaminated sites, trends over time, and habitat quality for marine life. We collected surficial sediments from 12 sites at an average seawater depth of 25 m in three near-urban areas of the Salish Sea (British Columbia, Canada) to investigate habitat quality for marine life, including heavily contaminated killer whales. Samples were analyzed using high-resolution instrumentation for a wide variety of congeners of polychlorinated biphenyls (PCBs), polybrominated diphenylethers (PBDEs), hexabromocyclododecane (HBCDD), polybrominated biphenyls, polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans, organochlorine pesticides, and polychlorinated naphthalenes (PCNs)...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28528418/spatial-distribution-and-temporal-trend-of-anthropogenic-organic-compounds-derived-from-the-2011-east-japan-earthquake
#20
Kaoruko Mizukawa, Yasuko Hirai, Hiroyuki Sakakibara, Satoshi Endo, Keiji Okuda, Hideshige Takada, Naoko Murakami-Sugihara, Kotaro Shirai, Hiroshi Ogawa
The tsunami caused by the Great East Japan Earthquake on March 11, 2011 disturbed coastal environments in the eastern Tohoku region in Japan. Numerous terrestrial materials, including anthropogenic organic compounds, were deposited in the coastal zone. To evaluate the impacts of the disaster, we analyzed PCBs, LABs, PAHs, and hopanes in mussels collected from 12 locations in the east of Tohoku during 2011-2015 (series A) by GC-ECD or GC-MS and compared them with results from mussels collected from 22 locations around Japan during 2001-2004 (series B)...
May 20, 2017: Archives of Environmental Contamination and Toxicology
journal
journal
23055
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"