Nitrous acid, nitrogen dioxide, and ozone concentrations in residential environments.

Lee, Ki-Young; Xue, Jianping; Geyh, Alison S.; Özkaynak, Halûk; Leaderer, Brian P.; Weschler, Charles J.; Spengler, John D.

doi:10.1289/ehp.02110145

Cited by 121 publications

(98 citation statements)

References 25 publications

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“…Without indoor sources, the population exposure to NO 2 is dominated primarily by NO 2 of ambient origin and secondarily by commuting exposure. Ambient NO 2 policies affect from 50% (with gas appliances) to 100% (no gas appliances) of the NO 2 exposures and reduce the exposure by 50-80% (depending on region and season) of the reduction in the ambient concentration (Monn, 2001;Kousa et al, 2001;Lee et al, 2002;Lai et al, 2004;Baxter et al, 2007;Kornartit et al, 2010).…”

Section: Nomentioning

confidence: 99%

A rapid assessment of the impact of hazard reduction burning around Sydney, May 2016

Broome¹,

Johnston

Horsley

et al. 2016

Medical Journal of Australia

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This document presents answers to 24 questions relevant to reviewing European policies on air pollution and to addressing health aspects of these policies. The answers were developed by a large group of scientists engaged in the WHO project "Review of evidence on health aspects of air pollution -REVIHAAP". The experts reviewed and discussed the newly accumulated scientific evidence on the adverse effects on health of air pollution, formulating science-based answers to the 24 questions. Extensive rationales for the answers, including the list of key references, are provided. The review concludes that a considerable amount of new scientific information on the adverse effects on health of particulate matter, ozone and nitrogen dioxide, observed at levels commonly present in Europe, has been published in recent years. This new evidence supports the scientific conclusions of the WHO air quality guidelines, last updated in 2005, and indicates that the effects in some cases occur at air pollution concentrations lower than those serving to establish these guidelines. It also provides scientific arguments for taking decisive actions to improve air quality and reduce the burden of disease associated with air pollution in Europe.This publication arises from the project REVIHAAP and has been co-funded by the European Union. Keywords AIR POLLUTANTS AIR POLLUTION -ADVERSE EFFECTS ENVIRONMENT AND PUBLIC HEALTH EVIDENCE BASED PRACTICE GUIDELINES HEALTH POLICYAddress requests about publications of the WHO Regional Office for Europe to: Publications WHO Regional Office for Europe Scherfigsvej 8 DK-2100 Copenhagen Ø, Denmark Alternatively, complete an online request form for documentation, health information, or for permission to quote or translate, on the Regional Office web site (http://www.euro.who.int/pubrequest). © World Health Organization 2013All rights reserved. The Regional Office for Europe of the World Health Organization welcomes requests for permission to reproduce or translate its publications, in part or in full.The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate borderlines for which there may not yet be full agreement.The mention of specific companies or of certain manufacturers products does not imply that they are endorsed or recommended by the World Health Organization in preference to others of a similar nature that are not mentioned. Errors and omissions excepted, the names of proprietary products are distinguished by initial capital letters.All reasonable precautions have been taken by the World Health Organization to verify the information contained in this publication. However, the published material is being distributed without warranty of any kind, either express or implied. ...

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Section: Nomentioning

confidence: 99%

A rapid assessment of the impact of hazard reduction burning around Sydney, May 2016

Broome¹,

Johnston

Horsley

et al. 2016

Medical Journal of Australia

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“…As condições de chama oxidantes resultam em altas temperaturas e propiciam a oxidação de N 2 para a formação de NO. 23 A oxidação de NO para formação de NO 2 em ambientes internos ocorre de forma similar ao meio externo e os possíveis mecanismos de são as reações com O 3 (Equação 5) e COVs (Equação 6). 7,16 Fontes comuns de O 3 em ambientes internos são máquinas fotocopiadoras e impressoras a laser.…”

Section: Variação Dos Níveis De No 2 Durante a Queima De Glp Em Uma Cunclassified

“…25,26 Na Califórnia, residências que não possuem fogões apresentaram concentrações médias de NO 2 similares aos seus ambientes externos (razão interno/externo de 1,22). 23 A extensão das evidências epidemiológicas relacionadas aos efeitos da exposição ao NO 2 decorrente da utilização de gás de cozinha na saúde humana ainda é inconsistente. Alguns estudos têm mostrado um pequeno, mas significante efeito da exposição ao NO 2 sobre o sistema respiratório e a função pulmonar, enquanto outros não confirmam esta associação.…”

Section: Variação Dos Níveis De No 2 Durante a Queima De Glp Em Uma Cunclassified

Avaliação de NO2 na atmosfera de ambientes externos e internos na cidade de Araraquara, São Paulo

Ugucione¹,

Machado²,

Cardoso³

2009

Quím. Nova

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Recebido em 30/9/08; aceito em 3/4/09; publicado na web em 31/8/09 EVALUATION OF NO 2 IN THE OUTDOOR AND INDOOR ATMOSPHERES AT ARARAQUARA, SÃO PAULO. The seasonal behavior of NO 2 concentration shows a maximum occurring during sugarcane crop and this suggests that the biomass burning is significant source of emission at this time of the year. Along the day, the variation of the NO 2 showed a decrease during the increased sunlight and an increase thereafter, caused by occurrence of photochemical reactions. Measurements of NO 2 were done inside of residential and industrial kitchens and also inside of a parking garage located in the underground of a supermarket building. The indoor concentrations of NO 2 were significantly higher than the concentrations of the external atmosphere and it shows the importance of the sources of internal emissions.Keywords: nitrogen dioxide concentration; nitrogen dioxide indoor; nitrogen dioxide outdoor. INTRODUÇÃOA quantidade das espécies nitrogenadas que compõem o ciclo do nitrogênio é incerta, devido principalmente à intervenção do homem. As maiores perturbações no ciclo do nitrogênio são provenientes de processos não intencionais que geram nitrogênio ativo, os quais possuem potencial para modificar as propriedades do ambiente ou da biota. 1,2 No período entre 1860 e 1990, enquanto a população mundial cresceu cerca de 4 vezes, a produção de nitrogênio reativo por atividades antrópicas foi 10 vezes maior, atingindo 156 Tg ano -1 . 3 Desse total, a produção de alimentos, as atividades industriais e a fixação biológica de nitrogênio são responsáveis por 84% e a produção de energia é responsável pelo restante. Atividades antrópicas são as principais responsáveis pela emissão de nitrogênio reativo para a atmosfera, especialmente óxidos de nitrogênio (NO x = NO + NO 2 ) e amônia (NH 3 ).2,4 Dentre os óxidos de nitrogênio, o principal composto emitido é o NO, o qual é rapidamente oxidado a NO 2 . Processos diversos de combustão são as principais fontes de NO x para a atmosfera, contribuindo com cerca de 31 Tg N ano -1 . 5 Em áreas urbanas isso se deve ao grande e crescente número de veículos de transporte individual, enquanto em áreas rurais se destaca a queima de biomassa com emissão de cerca de 6 Tg N ano Há uma relação direta entre o crescimento das fontes de emissão, o aumento da introdução de formas de nitrogênio ativo na atmosfera e as consequências resultantes no ambiente. Os óxidos de nitrogênio na atmosfera participam de uma série de reações complexas que envolvem outros compostos também presentes na atmosfera. Eles estão envolvidos na formação de material particulado e de compostos secundários como ácido nítrico (HNO 3 ), pentóxido de dinitrogênio (N 2 O 5 ), aldeídos e compostos orgânicos nitrogenados e também alteram a disponibilidade de radicais na atmosfera.6,7 Além disso, os óxidos de nitrogênio desempenham papel fundamental no controle da concentração de ozônio (O 3 ) troposférico, participando tanto da sua formação quanto da sua remoção da atmosfera. 6,7 O NO 2 é um dos ...

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“…The National Library of Medicine's (NLM) Household Products Database (HHS/NIH, 2015) lists 166 consumer products that contain d-limonene as an ingredient. Also there can be substantial concentrations of NO x in indoor air arising from combustion appliances such as gas stoves (Lee et al, 2002) and increase of vehicle population. However, limonene ozonolysis with nitric oxide (NO) present has received relatively little consideration even though NO x would react with other peroxy radicals and change the SOA formation pathways.…”

Section: Introductionmentioning

confidence: 99%

A Chamber Study of Secondary Organic Aerosol (SOA) Formed by Ozonolysis of d-Limonene in the Presence of NO

Chen

Zhou

Gao

et al. 2017

Aerosol Air Qual. Res.

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Experiments were conducted in a dynamic chamber system to measure the formation of secondary organic aerosol (SOA) and particle-bound reactive oxygen species (ROS) produced from limonene ozonolysis in the presence of NO by varying the ratio of O 3 to NO. A diffusion cell system was used to produce the constant input of limonene in to the chamber, and six sets of experiments were conducted. The concentration of SOA mass and ROS produced were measured at steady-state. ROS, including peroxides, peroxy radicals and ions, was determined using dichlorofluorescin (DCFH) and converted to equivalent H 2 O 2 concentration. The particle mass was measured using a tapered element oscillating microbalance (TEOM) and a scanning mobility particle sizer (SMPS) was used to obtain particle volume distributions. The results showed that the SOA mass concentration ranged from 30. . The highest SOA density (1.48 g cm -3) occurred with the lowest concentration ratio of [O 3 ]/[NO]. Compared with other monoterpene and linalool where each has one unsaturated carbon bond in other studies, limonene which has two unsaturated carbon bonds. Thus, it is the most efficient in generating the SOA and ROS concentrations in prior experiments without NO present.

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Nitrous acid, nitrogen dioxide, and ozone concentrations in residential environments.

Cited by 121 publications

References 25 publications

A rapid assessment of the impact of hazard reduction burning around Sydney, May 2016

A rapid assessment of the impact of hazard reduction burning around Sydney, May 2016

Avaliação de NO2 na atmosfera de ambientes externos e internos na cidade de Araraquara, São Paulo

A Chamber Study of Secondary Organic Aerosol (SOA) Formed by Ozonolysis of d-Limonene in the Presence of NO

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