atmospheric deposition Articles | Environmental XPRT

Alkylphenols in atmospheric depositions and urban runoff

A sampling campaign was conducted in order to determine alkylphenol (AP) concentrations in stormwater as well as potential AP sources in suburban environments. An analytical procedure was developed to quantify APs in bulk atmospheric deposition, building runoff, road runoff and stormwater. Both nonylphenols and octylphenols could be quantified in each sample. Median stormwater concentrations ...

Feb. 1, 2011

By IWA Publishing

Contribution of trace metals from atmospheric deposition to stormwater runoff in a small impervious urban catchment

The contribution of atmospheric deposition to emissions of trace metals in stormwater runoff was investigated by quantifying wet and dry deposition fluxes and stormwater discharges within a small, highly impervious urban catchment in Los Angeles. At the beginning of the dry season in spring 2003, dry deposition measurements of chromium, copper, lead, nickel, and zinc were made monthly for 1 ...

Aug. 19, 2005

By Southern California Coastal Water Research Project Authority (SCCWRP)

Designing a relational database for tracking and analysis of atmospheric deposition of mercury and trace metals in the Pensacola (Florida) Bay Watershed

The need to track and analyse the atmospheric deposition of mercury and trace metals in the Pensacola (Florida) Bay Watershed in recent years has resulted in the need for a data management system that will allow data to be efficiently stored, checked for errors, manipulated, retrieved for analysis and shared within the research community. In this paper, we describe a relational database that was ...

Jun. 18, 2012

By Inderscience Publishers

The chemical fractionation and potential source identification of Cu, Zn and Cd on urban watershed

This study showcases the chemical fractionation and primary source identification of Cu, Zn and Cd in road-deposited sediment. Results show that Zn and Cd were identified as easily mobilised and biologically available metals that pose high risks to the receiving aquatic environments. However, Cu was released in substantial amounts only under relatively extreme conditions. With the assistance ...

Jul. 13, 2015

By IWA Publishing

Fate and spatial variations of polybrominated diphenyl ethers in the deposition within a heavily urbanized area: case of Paris (France)

In this paper, we present the first results on the geochemical cycle of PolyBrominated Diphenyl Ethers (or PBDE) in the Paris Region (France). In order to provide information about the distribution and mobility of eight PBDE congeners, we first determined the level of contamination of different environmental compartments: i.e. atmosphere, soils and waters. Atmospheric PBDE deposition was ...

Aug. 1, 2010

By IWA Publishing

A comparative study of atmospheric deposits and lichen populations in a protected alpine area in the Grenoble region (France)

The atmospheric mixture deposited on ash tree stems was studied in Les Seiglieres, an alpine station located at an altitude of 1100 m in the Belledonne Mountains and in the town of Grenoble (300,000 inhabitants, altitude 200 m). The composition of the mixture of elements was fairly similar in the two stations, although the soil particles deposited on the stems had not the same geological origin. ...

Jun. 30, 2010

By Inderscience Publishers

Development of a Dioxin TMDL for the Houston Ship Channel in Texas

Polychlorinated dibenzo-p-dioxins and dibenzofurans (dioxin) are extremely persistent in the environment, and can affect human health at low concentrations for many years. As a result of dioxin found in fish and crab tissue, a seafood consumption advisory was issued by the Texas Department of Health in September 1990 for the upper portion of Galveston Bay and the Houston Ship Channel System (HSC) ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Modelling the effect of atmospheric nitrogen deposition on marine phytoplankton in the Singapore Strait

Atmospheric deposition is an important source of nutrients to the ocean, potentially stimulating primary production, but its relative effect on coastal eutrophication remains largely unknown. This paper presents data generated by the 3-D modelling program NEUTRO to assess the proportion of atmospheric nutrient fluxes, allowing a quantification of the relative contribution of atmospheric and ocean ...

Feb. 1, 2010

By IWA Publishing

Characterizinig Precipitation Chemistry in Changhua, Central Taiwan Using Weather Conditions And Multivariate Analysis

Few studies of atmospheric deposition come from the fast growing region of Southeast Asia. Precipitation in Changhua City in central Taiwan was collected to examine its chemical composition and relationship with meteorological patterns. Fifty percent of the precipitation measurements had pH<5.0. Deposition fluxes of most ions were comparable to that reported for heavily industrialized temperate ...

Jul. 1, 2005

By Springer-Verlag GmbH

How lichens and mosses reflect atmospheric deposition of natural and artificial radionuclides

In a national survey in Slovenia, two biomonitors, the epiphytic lichen Hypogymnia physodes and the terrestrial moss Hypnum cupressiforme, were analysed for 210Pb and 137Cs. Further, the results for 210Pb were compared with outdoor 222Rn and with precipitation data. 210Pb activity concentrations in moss carpets and lichen thalli ranged between 180?2450 and 200?1990 Bq kg-1, respectively. 210Pb ...

Jun. 30, 2010

By Inderscience Publishers

Modeling Monomethylmercury and Tributyltin Speciation with EPA’s Geochemical Speciation Model MINTEQA2

Monomethylmercury (MMHg) is the compound responsible for the majority of fish consumption advisories in forty eight states in the United States of America. These widespread low level (but toxicologically significant) ecological exposures to MMHg result from microbial methylation of atmospherically deposited inorganic mercury in our national waterbodies. Tributyltin (TBT) is an industrially ...

May 1, 2005

By US EPA - Environmental Protection Agency

Regional inhibition of cholinesterase in free‐ranging western pond turtles (Emys marmorata) occupying California mountain streams

The present study investigated the potential effects of cholinesterase (ChE)‐inhibiting pesticides on western pond turtles (Emys marmorata) occupying streams in two regions of California, USA. The southern region was suspected of having increased exposure to atmospheric deposition of contaminants originating from Central Valley agriculture. The northern region represented reference ChE ...

Dec. 11, 2012

By John Wiley & Sons, Ltd.

Apply appropriate models in the study of dry deposition fluxes of particulate matter and polycyclic aromatic hydrocarbons (PAHs) in Tsukuba, Japan

In this study, plates for downward flux and upward flux were used to measure atmospheric dry deposition fluxes for particulate mass and polycyclic aromatic hydrocarbons (PAHs) in TERC (Tsukuba), Japan. Ambient particles concentrations were also collected using a high-volume air sampler, and ambient particle size distributions between 0.01 μm and 13.1 μm were measured using a low-pressure cascade ...

Apr. 8, 2009

By Inderscience Publishers

Evaluation of an operational method for the estimation of emissions of nitrogen compounds for a group of farms

The aim of this article is to evaluate a practical method for estimating nitrogen emissions on the scale of a group of farms, to be used in Life Cycle Assessment (LCA). The method rests on the estimation of nitrogen inputs and outputs to calculate the surplus of the annual nitrogen balance on the scale of a farm. The different gaseous nitrogen losses (NH3, NO, N2O, N3) are then estimated for each ...

Mar. 8, 2006

By Inderscience Publishers

Estimation and Mapping of Wet and Dry Mercury Deposition Across Northeastern North America

Whereas many ecosystem characteristics and processes influence mercury accumulation in higher trophic-level organisms, the mercury flux from the atmosphere to a lake and its watershed is a likely factor in potential risk to biota. Atmospheric deposition clearly affects mercury accumulation in soils and lake sediments. Thus, knowledge of spatial patterns in atmospheric deposition may provide ...

Mar. 1, 2005

By Springer-Verlag GmbH

Nitrogen deposition effects on carbon storage and fungal:bacterial ratios in coastal sage scrub soils of Southern California

Received for publication August 25, 2008. The effects of nitrogen (N) across a deposition gradient on bacterial and fungal degradation pathways were studied in southern California coastal sage scrub soils to determine whether elevated N levels alter microbial community structure and organic matter accumulation. Three sites across an N deposition gradient having low, intermediate, and high levels ...

Dec. 1, 2009

By Soil Science Society of America (SSSA)

Deconstruction of Historic Mercury Accumulation in Lake Sediments, Northeastern United States

Total atmospheric contribution of mercury (HgT) to lake sediment was estimated using 210Pb-dated sediment cores. Algorithms based on estimates of lake and watershed processes were applied to more accurately assess anthropogenic contributions of Hg to the environment and HgT. Factors addressed include: lake-specific background accumulation rates of Hg (HgB), variability of sediment accumulation ...

Mar. 1, 2005

By Springer-Verlag GmbH

Estimation of potential impact on Copenhagen, Denmark due to accidental releases at Nuclear Risk Sites

This paper is focused on the testing of a methodology developed for nuclear risk and vulnerability assessment, and probabilistic evaluation of the long-term atmospheric transport and deposition patterns for radioactive pollutants from selected nuclear risk sites in the Euro-Arctic region. A combination of models (3-D trajectory, DERMA, and HIRLAM) was used to simulate such transport, dispersion, ...

Aug. 13, 2009

By Inderscience Publishers

Use of mosses to study atmospheric deposition of trace elements: contributions from investigations in Norway

This paper presents essential features of biomonitoring work carried out in the author's laboratory during more than 25 years using various analytical techniques for the determination of over 50 elements. A substantial part of this work concerns large-scale deposition surveys in Norway using the moss Hylocomium splendens, where five nationwide surveys have been carried out since 1977. ...

May 22, 2008

By Inderscience Publishers

FATE AND EFFECTS OF POLY‐ AND PERFLUOROALKYL SUBSTANCES IN THE AQUATIC ENVIRONMENT – A REVIEW

Poly‐ and perfluoroalkyl substances (PFASs) are distributed ubiquitously in the aquatic environment which raises concern for the flora and fauna in hydrosystems. This critical review focuses on the fate and adverse effects of PFASs in the aquatic environment. PFASs are continuously emitted into the environment from point and nonpoint sources such as sewage treatment plants (STPs) and ...

Jun. 12, 2014

By John Wiley & Sons, Ltd.