National Air and Radiation Environmental Laboratory : a leader in environmental radiation measurement.

Mode of access: Internet.

Respiratory health effects of passive smoking : lung cancer and other disorders.

"Jennifer Jinot and Steven Bayard were the scienfitic editors ... Major portions of this revised report were prepared by ICF Incorporated ... under EPA contract no. 68-00-0102"--P. xv.

High altitude pollution program stratospheric measurement system feasibility study /

Mode of access: Internet.

Concorde air sampling program : intercalibrations and collaborative measurements /

Mode of access: Internet.

The Investigation of atmospheric pollution /

Description based on: 26th (31st Mar. 1944).

Public health consultation, Diaz Chemical Corporation, January 5, 2002 air release : dioxins in residential soil, village of Holley, Orleans County, New York /

"CERCLIS No. NYD067532580."

Measurements of indoor toxic VOC concentrations attributed to the residential storage of household products /

"HWRIC RR-074."

Partners for clean air : clearing the air together.

Description based on: 1996.

Ozone pollution in Illinois /

"IIEQ project no. 10.063."

Remote sensing enhanced motor vehicle emissions control for pollution reduction in the Chicago metropolitan area : siting and issue analysis : final report /

"Project: 90/009."

Aerosol properties associated with air masses arriving into the North East Atlantic during the 2008 Mace Head EUCAARI intensive observing period: an overview

As part of the EUCAARI Intensive Observing Period, a 4-week campaign to measure aerosol physical, chemical and optical properties, atmospheric structure, and cloud microphysics was conducted from mid-May to mid-June, 2008 at the Mace Head Atmospheric Research Station, located at the interface of Western Europe and the N. E. Atlantic and centered on the west Irish coastline. During the campaign, continental air masses comprising both young and aged continental plumes were encountered, along with polar, Arctic and tropical air masses. Polluted-continental aerosol concentrations were of the order of 3000 cm(-3), while background marine air aerosol concentrations were between 400-600 cm(-3). The highest marine air concentrations occurred in polar air masses in which a 15 nm nucleation mode, with concentration of 1100 cm(-3), was observed and attributed to open ocean particle formation. Continental air submicron chemical composition (excluding refractory sea salt) was dominated by organic matter, closely followed by sulphate mass. Although the concentrations and size distribution spectral shape were almost identical for the young and aged continental cases, hygroscopic growth factors (GF) and cloud condensation nuclei (CCN) to total condensation nuclei (CN) concentration ratios were significantly less in the younger pollution plume, indicating a more oxidized organic component to the aged continental plume. The difference in chemical composition and hygroscopic growth factor appear to result in a 40-50% impact on aerosol scattering coefficients and Aerosol Optical Depth, despite almost identical aerosol microphysical properties in both cases, with the higher values been recorded for the more aged case. For the CCN/CN ratio, the highest ratios were seen in the more age plume. In marine air, sulphate mass dominated the sub-micron component, followed by water soluble organic carbon, which, in turn, was dominated by methanesulphonic acid (MSA). Sulphate concentrations were highest in marine tropical air - even higher than in continental air. MSA was present at twice the concentrations of previously-reported concentrations at the same location and the same season. Both continental and marine air exhibited aerosol GFs significantly less than ammonium sulphate aerosol pointing to a significant organic contribution to all air mass aerosol properties.

Avaliação do ciclo de vida de um pavimento flutuante de cortiça

A consciencialização ambiental vem assumindo um papel preponderante na construção civil. Nesse sentido, o desenvolvimento de materiais sustentáveis e ecológicos é essencial para a satisfação de fabricantes e consumidores, respeitando diversos requisitos: níveis reduzidos de poluição e toxicidade, durabilidade dos materiais, possibilidade de reutilização e/ou reciclagem, a proveniência das matérias-primas e a possibilidade de contaminação do ar no interior dos edifícios. As declarações ambientais de produto (DAP) permitem informar o consumidor do desempenho ambiental dos materiais dos produtos. Assim, ao longo de todo o processo de fabrico são registados os consumos de recursos e emissões ambientais e, através da metodologia de avaliação de ciclo de vida, é quantificada a contribuição resultante para impactes ambientais. Esta dissertação visa analisar os possíveis impactes ambientais no decurso do processo de produção de um pavimento flutuante de cortiça, constituído por cortiça, High Density Fibreboard (HDF) e acabamento de superfície, denominado Artcomfort Floating NPC e elaborar de um relatório de suporte, que servirá de base para a DAP do pavimento Artcomfort Floating NPC do sistema do Institut Bauen und Umwelt (IBU). Esta dissertação inclui um relatório de fundo, para a avaliação do ciclo de vida do pavimento flutuante Artcomfort Floating NPC da empresa Amorim Revestimentos, que servirá de base para a elaboração da declaração ambiental de produto (DAP) do mesmo. Para tal, recorreu-se ao software SimaPro para análise dos impactes ambientais das várias fases do processo de fabrico do pavimento em estudo, sendo as fases consideradas, a produção da camada base de cortiça aglomerada, camada backing de cortiça aglomerada, montagem da sanduiche, placa pintada, placa acabada e corte e embalagem. A fase que tem maior contribuição para os impactes ambientais do processo de fabrico do produto, em todas as categorias de impacte analisadas, com exceção da depleção dos recursos abióticos sem combustíveis fósseis, foi a fase de montagem da sanduiche.

Peat Bog Ecosystems: Atmospheric pollution

Peatlands can be damaged by deposition of pollutants from the atmosphere – often termed ‘ acid rain ’ . This results from the release of sulphur and nitrogen pollutants into the atmosphere . Originally associated with the Industrial Revolution, ‘acid rain’ was first described by Robert Angus Smith, a Manchester chemist of the 1800s , whose obser vations were made in close proximity to the peatlands of the South Pennines. Sulphur dioxide (SO 2 ) pollution, which is mainly emitted from coal burning power stations, peaked in the 1970s and has since decreased by over 90% due to emission controls and ch anges in energy supply. N itrogen ous air pollutants have decreased less . N itrogen oxide (NO x ) emissions , which are mainly from vehicle s , have decreased by two thirds since their peak in 1990 , but the decrease in ammonia ( NH 3 ) emissions , which are mainly from intensive livestock farming, is much less certain and may be only about 20%.

Qualidade do ar interior e conforto térmico : um estudo em espaços de estacionamento em Natal/RN

The recent tendency to utilize parking lots for other purposes has demonstrated that more time has been spent by visitors, mainly in great cities. Therefore, this paper investigates the thermal comfort and the air quality indoors in areas specifically used as parking lots by analyzing the direct relation between such environments and vehicular pollution. The thermal comfort and the quality of air indoors in parking lots with different architectonic typology (ground-floor and underground) are also studied, aiming to contribute to the proposition of suitable new areas designated to human usage. Field research was done, in two distinct periods within different weather conditions (January and July) in, two naturally cooled, parking lots located in Natal - RN. The internal environment agents were measured by using tools for air temperature, humidity, speed and direction; interviews with employees and visitors and chemical analysis through appropriate tools to analyze specific material, carbon monoxide and ozone. The results showed that chemical agents densely concentrate mostly in the closed parking space, aggravated by weather conditions, which dissatisfied the visitors. Still, it was shown that architectonic typology, alongside topographical aspects compromise internal environmental conditions, which increases the retention of pollution, leading to dissatisfactory thermal comfort levels and becoming less suitable for usage by visitors considering air and thermal comfort aspects. Consequently, they are not suitable for human stay due to the poor quality of the indoor air