atmospheric deposition Articles

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 ...

Jan. 31, 2011

By IWA Publishing

The United States Environmental Protection Agency's Community Multiscale Air Quality (CMAQ) regional-scale model is used to study concentrations and dry deposition of nitrogen species in North Carolina (NC) during the summer season. Each modelled and measured species featured a similar diurnal trend. A process budget analysis (production and removal evaluation) of NO, NO2, and ...

Jun. 25, 2006

By Inderscience Publishers

Section 112(m) of the 1990 Clean Air Act Amendments, referred to as the Great Waters Program, mandated an assessment of atmospheric deposition of hazardous air pollutants (HAPs) to Lake Champlain. Mercury (Hg) was listed as a priority HAP and has continued to be a high priority for a number of national and international programs. An assessment of the magnitude and seasonal variation of ...

Feb. 28, 2005

By Springer

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. 29, 2010

By Inderscience Publishers

Understanding the sources of chemical components in roof runoff can help to prevent water quality problems in rooftop rainwater harvesting. To identify the contribution of wet deposition to the mass of components in roof runoff, the samples from air, rainwater, dust buildup and roof runoff were collected from an urban site in Shenzhen of China in 2011–2012. The results indicate that: (1) wet ...

Mar. 4, 2015

By IWA Publishing

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 ...

Jan. 31, 2010

By IWA Publishing

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 21, 2008

By Inderscience Publishers

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. 29, 2010

By Inderscience Publishers

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 year. ...

Aug. 18, 2005

By Southern California Coastal Water Research Project Authority (SCCWRP)

The wet deposition for particulate matter (PM) and polycyclic aromatic hydrocarbons (PAHs) was modelled from the consecutive measurements of atmospheric concentration and wet deposition for particulate matter and PAHs in Higashi-Hiroshima city, Japan. In order to estimate the model in detail, the wet deposition was classified with that from gaseous and PM phase. The gaseous PAHs assumed to be ...

Sep. 30, 2010

By IWA Publishing

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. 17, 2012

By Inderscience Publishers

Contaminants used at low elevation, such as pesticides on crops, can be transported tens of kilometers and deposited in adjacent mountains in many parts of the world. Atmospherically deposited organic contaminants in the Sierra Nevada Mountains of California, USA, have exceeded some thresholds of concern, but the spatial and temporal distributions of contaminants in the mountains are not well ...

Dec. 10, 2012

By John Wiley & Sons, Ltd.

Mercury (Hg) is considered a priority pollutant because of its toxicity and potential for strong bioaccumulation.There are many serious environmental and human health concerns associated with elevated levels of Hg linked to industrial ...

Apr. 30, 2005

By Air & Waste Management Association (A&WMA)

The deposition of atmospheric nitrogen (N) to surface waters of de la Plata River downwind of Buenos Aires city has been estimated using atmospheric dispersion-deposition models. The CALPUFF model has been applied to point source emissions and the DAUMOD-RD model has been developed to evaluate the area source emission contributions. Annual N dry deposition is 31,763 kg-N yr−1 (≈ 18 kg-N km−2 ...

Mar. 9, 2009

By Inderscience Publishers

The effects of acidic depositions and sulphur and nitrogen gaseous concentrations on living organisms are mostly of a chronic nature. Effects occur at the individual, population and ecosystem level and affect both structural and functional attributes. Knowledge of the relationship between dose and effect (response) enables critical loads of depositions and critical levels of concentrations to be ...

Sep. 17, 2009

By Inderscience Publishers

Revisions to the dry deposition scheme in the Lagrangian dispersion model, NAME, are described. Improvements are made for situations where material is not well mixed within the boundary layer and for sedimenting heavy particles. The revised scheme overcomes problems of computational noise, common in Lagrangian dispersion models, with a manageable or no increase to the computational cost. The ...

Jun. 17, 2012

By Inderscience Publishers

For the past few years, a strong and intensive combined study by analytical scientists and biologists on bioindication and biomonitoring has developed. To achieve a more public-related prophylactic healthcare feature derived from these biotechniques in the future, the collaboration between analytical scientists, ecotoxicologists and especially human toxicologists has to be strongly intensified ...

May 21, 2008

By Inderscience Publishers

The aim of this paper was to calculate natural and anthropogenic emission of Na+ and to estimate, with the FRAME model, annual air concentration and deposition of Na+ for the domain covering Poland. Calculations of natural emissions included marine emission and wind blown dust from land. Anthropogenic emission was calculated for both ...

Dec. 27, 2012

By Inderscience Publishers

A 3-D Eulerian acid deposition model has been developed at MSC-W. The model has approximately 50 km horizontal resolution with 20 vertical layers, of which 10 are below 2 km. Meteorological input, from a dedicated weather prediction model, is updated at six-hour intervals. Emission inventories for SO2, NOx (NO + NO2) and ...

Jan. 25, 2004

By Inderscience Publishers

Aerosols samplings by bulk filtration and by use of a high volume cascade impactor were performed taking into account wind directions simultaneously at an urban and a rural site in Northern France. Fifteen major and trace species were considered to study characteristics of the particles collected. Evolution of the Weighted Mean Diameter vs. the wind direction, profiles of the Mass Size Function ...

Sep. 23, 2009

By Inderscience Publishers