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- Author:
- McLinden, Chris A.; Fioletov, Vitali; Krotkov, Nickolay
A.; Li, Can; Boersma, K. Folkert; Adams, Cristen
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 331-337
- ISSN:
- 1520-5851
- Subject:
- control methods; monitoring; nitrogen dioxide; oil sands; ozone; pollutants; pollution control; sulfur dioxide; surface mining; troposphere; Canada; North Dakota
- Abstract:
- ... A decade (2005–2014) of observations from the Ozone Monitoring Instrument (OMI) were used to examine trends in nitrogen dioxide (NO₂) and sulfur dioxide (SO₂) over a large region of western Canada and the northern United States, with a focus on the Canadian oil sands. In the oil sands, primarily over an area of intensive surface mining, NO₂ tropospheric vertical column densities (VCDs) are seen to ...
- DOI:
- 10.1021/acs.est.5b04985
-
http://dx.doi.org/10.1021%2Facs.est.5b04985
- Author:
- Lu, Zhijiang; MacFarlane, John K.; Gschwend, Philip M.
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 285-293
- ISSN:
- 1520-5851
- Subject:
- acidity; adsorption; bioavailability; chromatography; hydrogen; hydrogen bonding; hydrophobicity; polychlorinated biphenyls; polycyclic aromatic hydrocarbons; sediments; soil water; soot
- Abstract:
- ... Black carbons (BCs) dominate the sorption of many hydrophobic organic compounds (HOCs) in soils and sediments, thereby reducing the HOCs’ mobilities and bioavailabilities. However, we do not have data for diverse HOCs’ sorption to BC because it is time-consuming and labor-intensive to obtain isotherms on soot and other BCs. In this study, we developed a frontal analysis chromatographic method to i ...
- DOI:
- 10.1021/acs.est.5b03605
-
http://dx.doi.org/10.1021%2Facs.est.5b03605
- Author:
- Brauer, Michael; Freedman, Greg; Frostad, Joseph; van Donkelaar, Aaron; Martin, Randall V.; Dentener, Frank; Dingenen, Rita van; Estep, Kara; Amini, Heresh; Apte, Joshua S.; Balakrishnan, Kalpana; Barregard, Lars; Broday, David; Feigin, Valery; Ghosh, Santu; Hopke, Philip
K.; Knibbs, Luke D.; Kokubo, Yoshihiro; Liu, Yang; Ma, Stefan; Morawska, Lidia; Sangrador, José
Luis Texcalac; Shaddick, Gavin; Anderson, H. Ross; Vos, Theo; Forouzanfar, Mohammad
H.; Burnett, Richard T.; Cohen, Aaron
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 79-88
- ISSN:
- 1520-5851
- Subject:
- World Health Organization; air pollution; air quality; burden of disease; environmental exposure; guidelines; income; ozone; risk factors; satellites; simulation models; China; Europe; North America; South Asia; South East Asia
- Abstract:
- ... Exposure to ambient air pollution is a major risk factor for global disease. Assessment of the impacts of air pollution on population health and evaluation of trends relative to other major risk factors requires regularly updated, accurate, spatially resolved exposure estimates. We combined satellite-based estimates, chemical transport model simulations, and ground measurements from 79 different c ...
- DOI:
- 10.1021/acs.est.5b03709
-
http://dx.doi.org/10.1021%2Facs.est.5b03709
- Author:
- Li, Jie; Li, Chao; Sun, Hong-Jie; Juhasz, Albert
L.; Luo, Jun; Li, Hong-Bo; Ma, Lena Q.
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 453-461
- ISSN:
- 1520-5851
- Subject:
- animal models; arsenic; bioavailability; biomarkers; blood; diet; excretion; in vitro studies; kidneys; liver; mice; polluted soils; swine; urine
- Abstract:
- ... Different animals and biomarkers have been used to measure the relative bioavailability of arsenic (As-RBA) in contaminated soils. However, there is a lack of As-RBA comparison based on different animals (i.e., swine and mouse) and biomarkers [area under blood As concentration curve (AUC) after a single gavaged dose vs steady-state As urinary excretion (SSUE) and As accumulation in liver or kidney ...
- DOI:
- 10.1021/acs.est.5b04552
-
http://dx.doi.org/10.1021%2Facs.est.5b04552
- Author:
- Dong, Yan; Rosenbaum, Ralph
K.; Hauschild, Michael
Z.
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 269-278
- ISSN:
- 1520-5851
- Subject:
- bioavailability; cadmium; chromium; coastal water; cobalt; copper; ecotoxicology; iron; lead; life cycle assessment; manganese; marine ecosystems; nickel; seawater; toxicity; zinc
- Abstract:
- ... This study is a first attempt to develop globally applicable and spatially differentiated marine comparative toxicity potentials (CTPs) or ecotoxicity characterization factors for metals in coastal seawater for use in life cycle assessment. The toxicity potentials are based exclusively on marine ecotoxicity data and take account of metal speciation and bioavailability. CTPs were developed for nine ...
- DOI:
- 10.1021/acs.est.5b01625
-
http://dx.doi.org/10.1021%2Facs.est.5b01625
- Author:
- Hills, Thomas; Leeson, Duncan; Florin, Nicholas; Fennell, Paul
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 368-377
- ISSN:
- 1520-5851
- Subject:
- calcium; carbon; carbon dioxide; cement; combustion; commercialization; cost effectiveness; electricity; industry; infrastructure; pollution control
- Abstract:
- ... Several different carbon-capture technologies have been proposed for use in the cement industry. This paper reviews their attributes, the progress that has been made toward their commercialization, and the major challenges facing their retrofitting to existing cement plants. A technology readiness level (TRL) scale for carbon capture in the cement industry is developed. For application at cement p ...
- DOI:
- 10.1021/acs.est.5b03508
-
http://dx.doi.org/10.1021%2Facs.est.5b03508
- Author:
- Adadevoh, Joanna
S. T.; Triolo, Sarah; Ramsburg, C. Andrew; Ford, Roseanne M.
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 181-187
- ISSN:
- 1520-5851
- Subject:
- Pseudomonas putida; bacteria; bioremediation; biotransformation; chemoattractants; chemotaxis; crystals; groundwater flow; mutants; naphthalene
- Abstract:
- ... The use of chemotactic bacteria in bioremediation has the potential to increase access to, and the biotransformation of, contaminant mass within the subsurface. This laboratory-scale study aimed to understand and quantify the influence of chemotaxis on the residence times of pollutant-degrading bacteria within homogeneous treatment zones. Focus was placed on a continuous-flow sand-packed column in ...
- DOI:
- 10.1021/acs.est.5b03956
-
http://dx.doi.org/10.1021%2Facs.est.5b03956
- Author:
- Falter, Christoph; Batteiger, Valentin; Sizmann, Andreas
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 470-477
- ISSN:
- 1520-5851
- Subject:
- air; byproducts; carbon dioxide; climate; economic feasibility; economic performance; energy conversion; fuel production; greenhouse gas emissions; greenhouse gases; natural gas; oxygen; power plants; production costs; solar energy; solar radiation
- Abstract:
- ... Solar thermochemistry presents a promising option for the efficient conversion of H₂O and CO₂ into liquid hydrocarbon fuels using concentrated solar energy. To explore the potential of this fuel production pathway, the climate impact and economic performance are analyzed. Key drivers for the economic and ecological performance are thermochemical energy conversion efficiency, the level of solar irr ...
- DOI:
- 10.1021/acs.est.5b03515
-
http://dx.doi.org/10.1021%2Facs.est.5b03515
- Author:
- Hakk, Heldur
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 89-96
- ISSN:
- 1520-5851
- Subject:
- dehydrogenation; diastereomers; excretion; feces; hexabromocyclododecane; males; metabolism; metabolites; oxidation; rats; stereoisomerism; tissues; urine
- Abstract:
- ... Male Sprague–Dawley rats were dosed orally with 3 mg/kg of one of three hexabromocyclododecane (HBCD) diastereomers. Each diastereomer was well absorbed (73–83%), and distributed preferentially to lipophilic tissues. Feces were the major route of excretion; cumulatively accounting for 42% of dose for α-HBCD, 59% for ß-HBCD, and 53% for γ-HBCD. Urine was also an important route of HBCD excretion, a ...
- Handle:
- 10113/5363094
- DOI:
- 10.1021/acs.est.5b04510
-
https://dx.doi.org/10.1021/acs.est.5b04510
- Author:
- Fairbairn, David J.; Arnold, William A.; Barber, Brian
L.; Kaufenberg, Elizabeth F.; Koskinen, William C.; Novak, Paige
J.; Rice, Pamela J.; Swackhamer, Deborah L.
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 36-45
- ISSN:
- 1520-5851
- Subject:
- carbaryl; daidzein; drugs; hydrology; mecoprop; monitoring; personal care products; risk; spatial variation; temporal variation; trimethoprim; wastewater; wastewater treatment; watersheds; Minnesota
- Abstract:
- ... Understanding the sources, transport, and spatiotemporal variability of contaminants of emerging concern (CECs) is important for understanding risks and developing monitoring and mitigation strategies. This study used mass balances to compare wastewater treatment plant (WWTP) and upstream sources of 16 CECs to a mixed-use watershed in Minnesota, under different seasonal and hydrological conditions ...
- DOI:
- 10.1021/acs.est.5b03109
-
http://dx.doi.org/10.1021%2Facs.est.5b03109
- Author:
- Chu, Wenhai; Krasner, Stuart W.; Gao, Naiyun; Templeton, Michael R.; Yin, Daqiang
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 388-396
- ISSN:
- 1520-5851
- Subject:
- amino acids; byproducts; chlorination; disinfection; drinking water; effluents; florfenicol; oxidation; wastewater treatment
- Abstract:
- ... Dichloroacetamide (DCAcAm), a disinfection byproduct, has been detected in drinking water. Previous research showed that amino acids may be DCAcAm precursors. However, other precursors may be present. This study explored the contribution of the antibiotic chloramphenicol (CAP) and two of its analogues (thiamphenicol, TAP; florfenicol, FF) (referred to collectively as CAPs), which occur in wastewat ...
- DOI:
- 10.1021/acs.est.5b04856
-
http://dx.doi.org/10.1021%2Facs.est.5b04856
- Author:
- Schaefer, Charles E.; White, Erin B.; Lavorgna, Graig
M.; Annable, Michael D.
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 207-213
- ISSN:
- 1520-5851
- Subject:
- bedrock; dense nonaqueous phase liquids; groundwater; longevity; models; tetrachloroethylene; tracer techniques
- Abstract:
- ... Partitioning tracer testing was performed in discrete intervals within a fractured bedrock tetrachloroethene (PCE) dense nonaqueous-phase liquid (DNAPL) source area to assess the fracture flow field and DNAPL architecture. Results confirmed that the partitioning tracer testing was able to identify and quantify low levels of residual DNAPL along flow paths in hydraulically conductive fractures. DNA ...
- DOI:
- 10.1021/acs.est.5b04150
-
http://dx.doi.org/10.1021%2Facs.est.5b04150
- Author:
- Banitalebi, Ehsan; Hosseini, Vahid
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 279-284
- ISSN:
- 1520-5851
- Subject:
- air pollution; emissions; emissions factor; energy use and consumption; highways; models; traffic
- Abstract:
- ... Emission factors (EFs) are fundamental, necessary data for air pollution research and scenario implementation. With the vision of generating national EFs of the Iranian transportation system, a portable emission measurement system (PEMS) was used to develop the basic EFs for a statistically significant sample of Iranian gasoline-fueled privately owned light duty vehicles (LDVs) operated in Tehran. ...
- DOI:
- 10.1021/acs.est.5b05611
-
http://dx.doi.org/10.1021%2Facs.est.5b05611
- Author:
- Laycock, Adam; Diez-Ortiz, Maria; Larner, Fiona; Dybowska, Agnieszka; Spurgeon, David; Valsami-Jones, Eugenia; Rehkämper, Mark; Svendsen, Claus
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 412-419
- ISSN:
- 1520-5851
- Subject:
- Lumbricus rubellus; atomic absorption spectrometry; dermal exposure; earthworms; isotope labeling; mouthparts; nanoparticles; soil; stable isotopes; zinc; zinc oxide
- Abstract:
- ... The environmental behavior of ZnO nanoparticles (NPs), their availability to, uptake pathways by, and biokinetics in the earthworm Lumbricus rubellus were investigated using stable isotope labeling. Zinc isotopically enriched to 99.5% in ⁶⁸Zn (⁶⁸Zn-E) was used to prepare ⁶⁸ZnO NPs and a dissolved phase of ⁶⁸Zn for comparison. These materials enabled tracing of environmentally relevant (below backg ...
- DOI:
- 10.1021/acs.est.5b03413
-
http://dx.doi.org/10.1021%2Facs.est.5b03413
- Author:
- Bates, Matthew E.; Grieger, Khara D.; Trump, Benjamin
D.; Keisler, Jeffrey M.; Plourde, Kenton J.; Linkov, Igor
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 349-358
- ISSN:
- 1520-5851
- Subject:
- expert opinion; experts; governance; industry; multi-criteria decision making; nanotechnology; professionals; remediation; researchers; risk; risk assessment; stakeholders; synthetic biology
- Abstract:
- ... Emerging technologies present significant challenges to researchers, decision-makers, industry professionals, and other stakeholder groups due to the lack of quantitative risk, benefit, and cost data associated with their use. Multi-criteria decision analysis (MCDA) can support early decisions for emerging technologies when data is too sparse or uncertain for traditional risk assessment. It does t ...
- DOI:
- 10.1021/acs.est.5b03005
-
http://dx.doi.org/10.1021%2Facs.est.5b03005
- Author:
- Zhang, Jianyun; Zhang, Jing; Liu, Rui; Gan, Jay; Liu, Jing; Liu, Weiping
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 435-443
- ISSN:
- 1520-5851
- Subject:
- DDT (pesticide); agonists; antagonists; bifenthrin; cypermethrin; endocrine-disrupting chemicals; ethiofencarb; gene expression; glucocorticoid receptors; humans; lambda-cyhalothrin; luciferase; methoxychlor; molecular models; reporter genes; resmethrin; risk; screening; sex hormones; steroid hormone receptors; tolylfluanid
- Abstract:
- ... Many pesticides have been identified as endocrine-disrupting chemicals (EDCs) due to their ability to bind sex-steroid hormone receptors. However, little attention has been paid to the ability of pesticides to interfere with other steroid hormone receptors such as glucocorticoid receptor (GR) that plays a critical role in metabolic, endocrine, immune, and nervous systems. In this study, the glucoc ...
- DOI:
- 10.1021/acs.est.5b03731
-
http://dx.doi.org/10.1021%2Facs.est.5b03731
- Author:
- Wang, Xiaopu; Lanning, Larry M.; Ford, Roseanne M.
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 165-172
- ISSN:
- 1520-5851
- Subject:
- Pseudomonas putida; advection; aquifers; bacteria; bioremediation; chemotaxis; droplets; equations; groundwater; groundwater contamination; mixing; mutants; nonaqueous phase liquids; soil; toluene
- Abstract:
- ... Nonaqueous-phase liquid (NAPL) contaminants are difficult to eliminate from natural aquifers due, in part, to the heterogeneous structure of the soil. Chemotaxis enhances the mixing of bacteria with contaminant sources in low-permeability regions, which may not be readily accessible by advection and dispersion alone. A microfluidic device was designed to mimic heterogeneous features of a contamina ...
- DOI:
- 10.1021/acs.est.5b03872
-
http://dx.doi.org/10.1021%2Facs.est.5b03872
- Author:
- Zumstein, Michael
Thomas; Kohler, Hans-Peter E.; McNeill, Kristopher; Sander, Michael
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 197-206
- ISSN:
- 1520-5851
- Subject:
- Rhizopus oryzae; active sites; analytical methods; biodegradability; carboxylic ester hydrolases; enzymatic hydrolysis; hydrolysis; monitoring; pH; polyethylene terephthalates; polylactic acid; quartz; succinic acid
- Abstract:
- ... Cleavage of ester bonds by extracellular microbial hydrolases is considered a key step during the breakdown of biodegradable polyester materials in natural and engineered systems. Here we present a novel analytical approach for simultaneous detection of changes in the masses and rigidities of polyester thin films during enzymatic hydrolysis using a Quartz Crystal Microbalance with Dissipation moni ...
- DOI:
- 10.1021/acs.est.5b04103
-
http://dx.doi.org/10.1021%2Facs.est.5b04103
- Author:
- Kimbrough, Sue; Hays, Michael; Preston, Bill; Vallero, Daniel A.; Hagler, Gayle S.W.
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 18-24
- ISSN:
- 1520-5851
- Subject:
- air pollution; air quality; biomass; burning; carbon; carbon monoxide; emissions; highways; models; monitoring; particulates; remote sensing; smoke; summer; traffic; wildfires; wind direction; wind speed; California; Nevada
- Abstract:
- ... Air pollutant concentrations near major highways are usually attributed to a combination of nearby traffic emissions and regional background, and generally presumed to be additive in nature. During a near-road measurement study conducted in Las Vegas, NV, the effects of distant wildfires on regional air quality were indicated over a several day period in the summer of 2009. Area-wide elevated part ...
- DOI:
- 10.1021/acs.est.5b05038
-
http://dx.doi.org/10.1021%2Facs.est.5b05038
- Author:
- Chen, Yiling; Dong, Hao; Zhang, Huichun
- Source:
- Environmental Science & Technology 2016 v.50 no.1 pp. 249-258
- ISSN:
- 1520-5851
- Subject:
- chemical bonding; electrochemistry; electron transfer; isotopes; methodology; nitrogen; pyridines; quinoline; reducing agents; solvents
- Abstract:
- ... A combined experimental-theoretical approach was taken to elucidate the reduction mechanisms of five representative aromatic N-oxides (ANOs) by Feᴵᴵ–tiron complex and to identify the rate-limiting step. Based on the possible types of complexes formed with the reductant, three groups of ANOs were studied: type I refers to those forming 5-membered ring complexes through the N and O atoms on the side ...
- DOI:
- 10.1021/acs.est.5b04900
-
http://dx.doi.org/10.1021%2Facs.est.5b04900