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1.
Use of reactive tracers to determine ambient OH radical concentrations: Application within the indoor environment
Dudley E. Shallcross, Keven C Clemitshaw, Guy C Lloyd-Jones, Graham Nickless, Stephen J Henshaw, Fredrik K Petersson, Maria Paz Muñoz, Damien Martin, Iain R White, 2010, izvirni znanstveni članek

Opis: The hydroxyl radical (OH) plays a key role in determining indoor air quality. However, its highly reactive nature and low concentration indoors impede direct analysis. This paper describes the techniques used to indirectly quantify indoor OH, including the development of a new method based on the instantaneous release of chemical tracers into the air. This method was used to detect ambient OH in two indoor seminar rooms following tracer detection by gas chromatography- mass spectrometry (GCMS). The results from these tests add to the small number of experiments that have measured indoor OH which are discussed with regard to future directions within air quality research.
Najdeno v: osebi
Ključne besede: Ozone, Indoor air pollution, Indoor ozone, chemical tracers
Objavljeno: 18.07.2019; Ogledov: 376; Prenosov: 0
.pdf Polno besedilo (153,74 KB)

2.
A feasibility study of the use of reactive tracers to determine outdoor daytime OH radical concentrations within the urban environment
Iain R White, Damien Martin, K Fredrik Petersson, Stephen J Henshaw, Graham Nickless, Guy C Lloyd-Jones, Kevin C Clemitshaw, Dudley E Shallcross, 2014, izvirni znanstveni članek

Opis: Using a specifically designed chemical tracer to indirectly measure local atmospheric hydroxyl radical (OH) concentrations is a very appealing concept. Such a tracer will provide information on the amount of OH a tracer encounters, as it moves through the urban environment and provide a stringent test of models. However, to date an outdoor experiment such as this has not been conducted. This article discusses the reasons why this is so and examines the feasibility of using tracers to measure integrated urban OH levels over short (≤1km) distances.
Najdeno v: osebi
Ključne besede: reactive tracers, OH radicals, NO3 radicals, oxidising rate, dispersion, urban
Objavljeno: 18.07.2019; Ogledov: 396; Prenosov: 0
.pdf Polno besedilo (748,36 KB)

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