Investigating ozone-induced decomposition of surface-bound permethrin for conditions in aircraft cabins

Coleman, Bernard D.; Wells, J. R.; Nazaroff, William W.

doi:10.1111/j.1600-0668.2009.00627.x

Cited by 5 publications

(4 citation statements)

References 29 publications

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“…However, the method has not been established in ambient air analytics due to the calibration effort required. For special compounds, such as phosgene, elaborate derivatization, and analysis procedures are necessary (Coleman et al., ).…”

Section: Analysis Of Vvocs In Indoor Airmentioning

confidence: 99%

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Very volatile organic compounds: an understudied class of indoor air pollutants

Salthammer

2014

Indoor Air

130

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Very volatile organic compounds (VVOCs), as categorized by the WHO, are an important subgroup of indoor pollutants and cover a wide spectrum of chemical substances. Some VVOCs are components of products commonly used indoors, some result from chemical reactions and some are reactive precursors of secondary products. Nevertheless, there is still no clear and internationally accepted definition of VVOCs. Current approaches are based on the boiling point, and the saturation vapor pressure or refer to analytical procedures. A significant problem is that many airborne VVOCs cannot be routinely analyzed by the usually applied technique of sampling on Tenax TA â followed by thermal desorption GC/MS or by DNPH-sampling/ HPLC/UV. Some VVOCs are therefore often neglected in indoor-related studies. However, VVOCs are of high significance for indoor air quality assessment and there is need for their broader consideration in measurement campaigns and material emission testing. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. T. SalthammerThe copyright line for this article was changed on 8th January 2015 after original online publication.Received for review 28 September 2014. Accepted for publication 26 November 2014. Practical ImplicationsSo far, many very volatile organic compounds (VVOCs) are insufficiently considered, although they are of importance for the evaluation of indoor air quality and building product emissions. Moreover, an appropriate definition of VVOCs does not exist. Therefore, it is the purpose of this publication to shift VVOCs more into the focus of indoorrelated research. Potential VVOCs, their sources, indoor air concentrations, and analytical procedures are critically discussed.

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Section: Analysis Of Vvocs In Indoor Airmentioning

confidence: 99%

“…() whereby, in addition to formaldehyde, particularly formic acid and acetic acid occurred as the main products. Also, noteworthy is the detection of phosgene (COCl 2 ) through the reaction of the insecticide permethrin, which is commonly used in indoor areas, with ozone (Coleman et al., ).…”

Section: Sources Of Vvocsmentioning

confidence: 99%

Very volatile organic compounds: an understudied class of indoor air pollutants

Salthammer

2014

Indoor Air

130

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“…People in industrialized countries, on average, spend 80–90% of their time indoors where concentrations of some pollutants are often much greater than those outdoors . Lately, research in ozone interaction with myriads of organic compounds at indoor interfaces has garnered increasing attention, − for many pervasive household chemicals such as detergents, disinfectants, and air-refreshers, once applied, they can be adhered to various indoor surfaces for an extended period of time and interact with ozone. The indoor interfacial chemistry is markedly important because compared to outdoor settings, the available surface area relative to the building volume is extremely large, and their heterogeneous reaction probabilities can be greatly enhanced by several orders of magnitude relative to the counterparts in gas phase .…”

Section: Introductionmentioning

confidence: 99%

ATR-IR Study of Ozone Initiated Heterogeneous Oxidation of Squalene in an Indoor Environment

Leng²,

Kelley³

et al. 2013

Environ. Sci. Technol.

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There has been a surge of interest in interfacial ozone chemistry for its application in indoor air quality and public health. Squalene, one of the most abundant ozone reactive constituents in an indoor environment, has received increasing attention lately, and a number of studies have been devoted to its heterogeneous interaction with ozone in actual and simulated settings. At present, there is still a large discrepancy in the measurement of the reactive uptake coefficient of ozone onto a squalene surface, and knowledge about this system remains incomplete. In this work, we investigated the ozone initiated heterogeneous oxidation of squalene using attenuated total reflection infrared spectroscopy (ATR-IR). We measured pseudo-first-order rate constants and uptake coefficients based on time dependent absorbance changes in C═C (1668 cm(-1)) and C═O (1730 cm(-1)) vibration bands. The uptake coefficients are (1.7 ± 0.2) × 10(-4) from the C═C band and (5.1 ± 0.7) × 10(-4) from the C═O band. The latter is likely an upper limit of reaction probability for ozone uptake onto squalene. Studies of temperature (5-32 °C) and relative humidity (0 and 80% RH) dependence revealed that indoor temperatures and RHs did not affect reaction kinetics. The insignificant RH effect is probably due to the weak interaction between water and squalene molecules. We quantitatively characterized the hydrophilicity and redox activity of squalene before and after exposure to ozone for the first time, and observed considerable enhancements in both hydrophilicity and redox activity during reaction. This may imply that ozone initiated heterogeneous oxidation could pose a higher public health risk in an indoor environment, and it may help explain some of the adverse health effects associated with elevated indoor pollutants.

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“…The study of ozone in aircraft has recently been the focus of active scientific investigation Coleman et al, 2010;Rai et al, 2013Rai et al, , 2014aRai et al, , 2014bRai, Lin, & Chen, 2015;Spengler, Ludwig, & Weker, 2004; Strøm-Tejsen, Weschler, Table 4 Some evidences showing consequences of ozone reactions with organic chemicals emitted from consumer products.…”

Section: Mechanics In Special Indoor Environment: Aircraftsmentioning

confidence: 97%