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You searched for: Journal name Environmental Science & Technology Remove constraint Journal name: Environmental Science & Technology Publication year rev 7988-2012 Remove constraint Publication year rev: 7988-2012 Source 2012 v.46 no.1 Remove constraint Source: 2012 v.46 no.1
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1. 2-Ethylhexyl Tetrabromobenzoate and Bis(2-ethylhexyl) Tetrabromophthalate Flame Retardants in the Great Lakes Atmosphere

Author:
Ma Yuning; Venier Marta; Hites Ronald A.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 204-208
ISSN:
1520-5851
Subject:
air; dunes; flame retardants; markets; polybrominated diphenyl ethers; urban areas; Great Lakes
Abstract:
... Two relatively new flame retardants, 2-ethylhexyl-2,3,4,5-tetrabromobenzoate (TBB) and bis(2-ethylhexyl)-tetrabromophthalate (TBPH), were identified and quantitated in gas and particle-phase air samples collected from six sites near the shores of the Great Lakes. TBB and TBPH were detected in more than half of the samples collected from 2008 to 2010. Urban areas, such as Chicago and Cleveland, sho ...
DOI:
10.1021/es203251f

2. An Investigation of Strong Sodium Retention Mechanisms in Nanopore Environments Using Nuclear Magnetic Resonance Spectroscopy

Author:
Ferreira Daniel R.; Schulthess Cristian P.; Giotto Marcus V.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 300-306
ISSN:
1520-5851
Subject:
nanopores; nuclear magnetic resonance spectroscopy; models; cations; zeolites; sodium; prediction; adsorption
Abstract:
... Recent experimental research into the adsorption of various cations on zeolite minerals has shown that nanopore channels of approximately 0.5 nm or less can create an effect whereby the adsorption of ions, especially those that are weakly hydrated, can be significantly enhanced. This enhanced adsorption occurs due to the removal of hydrating water molecules which in turn is caused by the nanopore ...
DOI:
10.1021/es2033394

3. Assessment of Chemical Mixtures and Groundwater Effects on Daphnia magna Transcriptomics

Author:
Garcia-Reyero Natàlia; Escalon B. Lynn; Loh Po−Ru; Laird Jennifer G.; Kennedy Alan J.; Berger Bonnie; Perkins Edward J.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 42-50
ISSN:
1520-5851
Subject:
Daphnia magna; environmental monitoring; gene expression; genes; groundwater; groundwater contamination; microarray technology; models; polymerase chain reaction; prediction; transcriptomics; trinitrotoluene
Abstract:
... Small organisms can be used as biomonitoring tools to assess chemicals in the environment. Chemical stressors are especially hard to assess and monitor when present as complex mixtures. Here, fifteen polymerase chain reaction assays targeting Daphnia magna genes were calibrated to responses elicited in D. magna exposed for 24 h to five different doses each of the munitions constituents 2,4,6-trini ...
DOI:
10.1021/es201245b

4. Building Quantitative Prediction Models for Tissue Residue of Two Explosives Compounds in Earthworms from Microarray Gene Expression Data

Author:
Gong Ping; Loh Po−Ru; Barker Natalie D.; Tucker George; Wang Nan; Zhang Chenhua; Escalon B. Lynn; Berger Bonnie; Perkins Edward J.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 19-26
ISSN:
1520-5851
Subject:
Eisenia fetida; chemical residues; data collection; earthworms; explosives; gene expression; genes; microarray technology; models; prediction; soil pollution; trinitrotoluene
Abstract:
... Soil contamination near munitions plants and testing grounds is a serious environmental concern that can result in the formation of tissue chemical residue in exposed animals. Quantitative prediction of tissue residue still represents a challenging task despite long-term interest and pursuit, as tissue residue formation is the result of many dynamic processes including uptake, transformation, and ...
DOI:
10.1021/es201187u

5. Chemical Speciation of Vanadium in Particulate Matter Emitted from Diesel Vehicles and Urban Atmospheric Aerosols

Author:
Shafer Martin M.; Toner Brandy M.; Overdier Joel T.; Schauer James J.; Fakra Sirine C.; Hu Shaohua; Herner Jorn D.; Ayala Alberto
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 189-195
ISSN:
1520-5851
Subject:
X-ray absorption spectroscopy; aerosols; chemical speciation; diesel engines; oxidation; particulate emissions; particulates; vanadium
Abstract:
... We report on the development and application of an integrated set of analytical tools that enable accurate measurement of total, extractable, and, importantly, the oxidation state of vanadium in sub-milligram masses of environmental aerosols and solids. Through rigorous control of blanks, application of magnetic-sector-ICPMS, and miniaturization of the extraction/separation methods we have substan ...
DOI:
10.1021/es200463c

6. Comparative Floc-Bed Sediment Trace Element Partitioning Across Variably Contaminated Aquatic Ecosystems

Author:
Elliott Amy V. C.; Plach Janina M.; Droppo Ian G.; Warren Lesley A.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 209-216
ISSN:
1520-5851
Subject:
aquatic ecosystems; aquatic environment; arsenic; cobalt; copper; geochemistry; iron oxyhydroxides; nickel; sediments; silver
Abstract:
... Significantly higher concentrations of Ag, As, Cu, Ni and Co are found in floc compared to bed sediments across six variably impacted aquatic ecosystems. In contrast to the observed element and site-specific bed sediment trace element (TE) partitioning patterns, floc TE sequestration is consistently dominated by amorphous oxyhydroxides (FeOOH), which account for 30–79% of floc total TE concentrati ...
DOI:
10.1021/es202221u

7. Correlation of Community Dynamics and Process Parameters As a Tool for the Prediction of the Stability of Wastewater Treatment

Author:
Günther Susanne; Koch Christin; Hübschmann Thomas; Röske Isolde; Müller Roland Arno; Bley Thomas; Harms Hauke; Müller Susann
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 84-92
ISSN:
1520-5851
Subject:
DNA; activated sludge; basins; brewing industry; community structure; correlation; denitrification; disease diagnosis; flow cytometry; microbial communities; microorganisms; municipal wastewater; nitrates; phosphates; phosphorus; phylogeny; polymerase chain reaction; prediction; process monitoring; wastewater treatment; water quality
Abstract:
... Wastewater treatment often suffers from instabilities and the failure of specific functions such as biological phosphorus removal by polyphosphate accumulating organisms. Since most of the microorganisms involved in water clarification are unknown it is challenging to operate the process accounting for the permanent varying abiotic parameters and the complex composition and unrevealed metabolic ca ...
DOI:
10.1021/es2010682

8. Differential Display System with Vertebrate-Common Degenerate Oligonucleotide Primers: Uncovering Genes Responsive to Dioxin in Avian Embryonic Liver

Author:
Teraoka Hiroki; Ito Shino; Ikeda Haruki; Kubota Akira; Elmagd M. M. Abou; Kitazawa Takio; Kim Eun-Young; Iwata Hisato; Endoh Daiji
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 27-33
ISSN:
1520-5851
Subject:
DNA primers; Gallus gallus; Phalacrocorax carbo; Primates; chickens; complementary DNA; cytochrome P-450; fish; gene expression; genes; liver; messenger RNA; pollutants; quantitative polymerase chain reaction; reverse transcriptase polymerase chain reaction; tetrachlorodibenzo-p-dioxin; transcriptome
Abstract:
... To assess possible impacts of environmental pollutants on gene expression profiles in a variety of organisms, we developed a novel differential display system with primer sets that are common in seven vertebrate species, based on degenerate oligonucleotide-primed PCR (DOP-PCR). An 8-mer inverse repeat motif was found in most transcripts from the seven vertebrates including fish to primates with de ...
DOI:
10.1021/es201085m

9. Effectiveness of Ozonation Treatment in Eliminating Toxicity of Oil Sands Process-Affected Water to Chironomus dilutus

Author:
Anderson J. C.; Wiseman S. B.; Wang N.; Moustafa A.; Perez-Estrada L.; Gamal El-Din M.; Martin J. W.; Liber K.; Giesy J. P.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 486-493
ISSN:
1520-5851
Subject:
Chironomus dilutus; bitumen; chronic exposure; larvae; naphthenates; oil sands; ozonation; ozone; pupation; toxicity; Alberta
Abstract:
... Water soluble organic compounds (OCs), including naphthenic acids (NAs), are potentially toxic constituents of oil sands process-affected water (OSPW) that is generated during extraction of bitumen from Alberta oil sands. Ozonation can decrease concentrations of OCs in OSPW. However, effects of ozonated-OSPW on multicellular organisms are unknown. A 10-day and a chronic exposure of Chironomus dilu ...
DOI:
10.1021/es202415g

10. Emission Changes Resulting from the San Pedro Bay, California Ports Truck Retirement Program

Author:
Bishop Gary A.; Schuchmann Brent G.; Stedman Donald H.; Lawson Douglas R.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 551-558
ISSN:
1520-5851
Subject:
United States Environmental Protection Agency; ammonia; carbon monoxide; emissions; filters; natural gas; nitrogen; nitrogen dioxide; opacity; particulates; trucks; California
Abstract:
... Recent U.S. Environmental Protection Agency emissions regulations have resulted in lower emissions of particulate matter and oxides of nitrogen from heavy-duty diesel trucks. To accelerate fleet turnover the State of California in 2008 along with the Ports of Los Angeles and Long Beach (San Pedro Bay Ports) in 2006 passed regulations establishing timelines forcing the retirement of older diesel tr ...
DOI:
10.1021/es202392g

11. European Emissions of Halogenated Greenhouse Gases Inferred from Atmospheric Measurements

Author:
Keller Christoph A.; Hill Matthias; Vollmer Martin K.; Henne Stephan; Brunner Dominik; Reimann Stefan; O’Doherty Simon; Arduini Jgor; Maione Michela; Ferenczi Zita; Haszpra Laszlo; Manning Alistair J.; Peter Thomas
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 217-225
ISSN:
1520-5851
Subject:
carbon dioxide; chlorofluorocarbons; emissions; greenhouse gases; hydrofluorocarbons; least squares; models; Central European region; China; Eastern European region; Hungary; Ireland; Italy; Switzerland; United States; Western European region
Abstract:
... European emissions of nine representative halocarbons (CFC-11, CFC-12, Halon 1211, HCFC-141b, HCFC-142b, HCFC-22, HFC-125, HFC-134a, HFC-152a) are derived for the year 2009 by combining long-term observations in Switzerland, Italy, and Ireland with campaign measurements from Hungary. For the first time, halocarbon emissions over Eastern Europe are assessed by top-down methods, and these results ar ...
DOI:
10.1021/es202453j

12. Evaluating Remedial Alternatives for an Acid Mine Drainage Stream: A Model Post Audit

Author:
Runkel Robert L.; Kimball Briant A.; Walton-Day Katherine; Verplanck Philip L.; Broshears Robert E.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 340-347
ISSN:
1520-5851
Subject:
acid mine drainage; aluminum; arsenic; cadmium; copper; hydrogeochemistry; iron; lead; models; pH; prediction; protons; sorbents; sorption; streams; water quality standards; zinc
Abstract:
... A post audit for a reactive transport model used to evaluate acid mine drainage treatment systems is presented herein. The post audit is based on a paired synoptic approach in which hydrogeochemical data are collected at low (existing conditions) and elevated (following treatment) pH. Data obtained under existing, low-pH conditions are used for calibration, and the resultant model is used to predi ...
DOI:
10.1021/es2038504

13. Evaluating the Transcriptomic and Metabolic Profile of Mice Exposed to Source Drinking Water

Author:
Zhang Yan; Zhang Xuxiang; Wu Bing; Cheng Shupei
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 78-83
ISSN:
1520-5851
Subject:
acetates; blood serum; choline; creatine; drinking; drinking water; gene expression; gene expression regulation; genes; glutamine; lipids; lysine; metabolites; metabolomics; mice; microarray technology; nuclear magnetic resonance spectroscopy; pyruvic acid; risk; taurine; transcriptome; transcriptomics; trimethylamine
Abstract:
... Transcriptomic and metabonomic methods were used to investigate mice’s responses to drinking source water (DSW) exposure. After mice were fed with DSW for 90 days, hepatic transcriptome was characterized by microarray and serum metabonome were determined by ¹H nuclear magnetic resonance (NMR) spectroscopy. A total of 243 differentially expressed genes (DEGs) were identified, among which 141 genes ...
DOI:
10.1021/es201369x

14. Exploration of Oxidative Stress and Inflammatory Markers in Relation to Urinary Phthalate Metabolites: NHANES 1999–2006

Author:
Ferguson Kelly K.; Loch-Caruso Rita; Meeker John D.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 477-485
ISSN:
1520-5851
Subject:
National Health and Nutrition Examination Survey; alkaline phosphatase; antioxidants; bilirubin; dibutyl phthalate; epidemiological studies; ferritin; fibrinogen; inflammation; iron; metabolites; neutrophils; oxidative stress; pollution
Abstract:
... Phthalate exposure has been associated with a wide range of adverse health outcomes in limited epidemiologic studies, and inflammation and oxidative stress have been hypothesized as potential mechanisms involved. In the present study we investigated associations between urinary concentrations of phthalate metabolites and potential blood markers of oxidative stress (bilirubin) and inflammation (alk ...
DOI:
10.1021/es202340b
PubMed:
22085025
PubMed Central:
PMC3258337

15. Influence of Agro-Ecosystem Modeling Approach on the Greenhouse Gas Profiles of Wheat-Derived Biopolymer Products

Author:
Guo Miao; Li ChangSheng; Bell J. Nigel B.; Murphy Richard J.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 320-330
ISSN:
1520-5851
Subject:
agroecosystems; biopolymers; climate change; greenhouse gas emissions; greenhouse gases; inventories; life cycle assessment; models; nitrogen; nitrous oxide; uncertainty; uncertainty analysis
Abstract:
... An approach is presented to include a wider range of factors involved in the nitrogen and carbon cycles in agro-ecosystems than is typical of many Life Cycle Assessments (LCAs) of agriculture-based products. This use results from the process-oriented Denitrification–Decomposition (DNDC, modified version) model. Here we evaluate the effects of using site-specific N₂O emissions derived from the DNDC ...
DOI:
10.1021/es2030388

16. Influence of Sampler Configuration on the Uptake Kinetics of a Passive Air Sampler

Author:
Zhang Xianming; Wong Cindy; Lei Ying D.; Wania Frank
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 397-403
ISSN:
1520-5851
Subject:
air; cost effectiveness; gels; polychlorinated biphenyls; samplers; shipping; silica; temperature; volatile organic compounds; water vapor; wind speed
Abstract:
... Passive air samplers (PAS) are simple and cost-effective tools to monitor semivolatile organic compounds in air. Chemical uptake occurs by molecular diffusion from ambient air to a passive sampling medium (PSM). Previous calibration studies indicate that even for the same type of PAS, passive air sampling rates (R, m³ₐᵢᵣ/d) can be highly variable due to the influence of a number of factors. Earlie ...
DOI:
10.1021/es203292x

17. Lack of Influence of Extracellular Polymeric Substances (EPS) Level on Hydroxyl Radical Mediated Disinfection of Escherichia coli

Author:
Gong Amy S.; Lanzl Caylyn A.; Cwiertny David M.; Walker Sharon L.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 241-249
ISSN:
1520-5851
Subject:
Escherichia coli; die-off; disinfection; hydroxyl radicals; models; nitrates; pathogens; photolysis; surface water; viability
Abstract:
... Photolysis of nitrate, a prevalent constituent in agriculturally impacted waters, may influence pathogen attenuation in such systems through production of hydroxyl radical (•OH). This study focuses on the efficacy of •OH generated during nitrate photolysis in promoting E. coli die-off as a function of extracellular polymeric substances (EPS) coverage. EPS levels of four E. coli isolates were syste ...
DOI:
10.1021/es202541r

18. Manganese Oxidation Induced by Water Table Fluctuations in a Sand Column.

Author:
Farnsworth Claire E.; Voegelin Andreas; Hering Janet G.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 277-284
ISSN:
1520-5851
Subject:
Pseudomonas putida; X-ray absorption spectroscopy; dissolved oxygen; filtration; groundwater; manganese; oxidation; quartz; sand; water table; wells; zinc
Abstract:
... On–off cycles of production wells, especially in bank filtration settings, cause oscillations in the local water table, which can deliver significant amounts of dissolved oxygen (DO) to the shallow groundwater. The potential for DO introduced in this manner to oxidize manganese(II) (Mn(II)), mediated by the obligate aerobe Pseudomonas putida GB-1, was tested in a column of quartz sand fed with ano ...
DOI:
10.1021/es2027828

19. Measuring In Vitro Biotransformation Rates of Super Hydrophobic Chemicals in Rat Liver S9 Fractions Using Thin-Film Sorbent-Phase Dosing

Author:
Lee Yung-Shan; Otton S. Victoria; Campbell David A.; Moore Margo M.; Kennedy Chris J.; Gobas Frank A.P.C.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 410-418
ISSN:
1520-5851
Subject:
biotransformation; chemical analysis; hydrophobicity; liver; males; rats; vinyl acetate
Abstract:
... Methods for rapid and cost-effective assessment of the biotransformation potential of very hydrophobic and potentially bioaccumulative chemicals in mammals are urgently needed for the ongoing global evaluation of the environmental behavior of commercial chemicals. We developed and tested a novel solvent-free, thin-film sorbent-phase in vitro dosing system to measure the in vitro biotransformation ...
DOI:
10.1021/es203338h

20. Mobilization of Manufactured Gas Plant Tar with Alkaline Flushing Solutions

Author:
Hauswirth Scott C.; Birak Pamela Schultz; Rylander Seth C.; Miller Cass T.
Source:
Environmental Science & Technology 2012 v.46 no.1 pp. 426-433
ISSN:
1520-5851
Subject:
contact angle; sodium hydroxide; surface tension; viscosity; xanthan gum
Abstract:
... This experimental study investigates the use of alkaline and alkaline–polymer solutions for the mobilization of former manufactured gas plant (FMGP) tars. Tar–aqueous interfacial tensions (IFTs) and contact angles were measured, and column flushing experiments were conducted. NaOH solutions (0.01–1 wt.%) were found to significantly reduce tar–aqueous IFT. Contact angles indicated a shift to strong ...
DOI:
10.1021/es202278s
PubMed:
22091957
PubMed Central:
PMC3258375