Quantitative Assessment of the Effect of Surface Deposition and Coagulation on the Dynamics of Submicrometer Particles Indoors

Jamriska, Milan; Morawska, Lidia

doi:10.1080/02786820300975

Cited by 25 publications

(20 citation statements)

References 10 publications

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“…These results are in agreement with those that are reported by Nazaroff and Cass (1986) and Grøntoft and Raychaudhuri (2004). The estimation of deposition rates and velocities from experimental data employing methods similar to the methodology presented in Appendix 1 is common in the international literature (Thatcher and Layton 1995;Jamriska and Morawska 2003;Howard-Reed et al 2003). It should be noted that deviation of the k τ parameter, as was estimated here, from the actual deposition rate, would become higher as consumption through chemical reactions becomes more intense.…”

Section: Model Applicationsupporting

confidence: 92%

Temporal evolution of the main processes that control indoor pollution in an office microenvironment: a case study

Halios

Helmis

2009

Environ Monit Assess

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The aim of this study is to examine the relative contribution of the outdoor concentration, the ventilation rate, the geometric characteristics of the indoor environment (i.e., extent of indoor surfaces and indoor volume), the deposition, and chemical reactions to the indoor air quality of the office microenvironment. For this case study, the NO, NO2, and O3 concentrations indoors and outdoors and TVOCs and CO2 concentrations indoors were measured in an office microenvironment in Athens, Greece, that was ventilated both naturally and mechanically. The calculated ventilation and loss rates and the measured outdoor concentrations of NO, NO2, and O3 were set as input to Multi-chamber Indoor Air Quality Model in order to study the temporal variation of the indoor NO, NO2, and O3 concentrations. Results showed that when the ventilation rate and outdoor concentration are high, the relative contribution of the transport process contributes significantly, while the chemical process depends on the contemporary interplay between the indoor O3, NO, and NO2 concentrations and lighting levels. The significance of each process was further examined by performing sensitivity tests, and it was found that the most important parameters were the deposition velocities, the UV infiltration rates (which determines the indoor chemical reaction rates), the ventilation rates, and the filtration (when a mechanical ventilation system is used). The effect of the hydrocarbon chemistry was not significant.

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Section: Model Applicationsupporting

confidence: 92%

Temporal evolution of the main processes that control indoor pollution in an office microenvironment: a case study

Halios

Helmis

2009

Environ Monit Assess

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“…The parameter (m 3 s −1 ) represents the coagulation coefficient for the entire size distribution. The deposition rate is considered constant in agreement with experimental results of previous works on deposition (Jamriska & Morawska (2003); Lai, 2002;Nazaroff, 2004;Nomura, Hopke, Fitzgerald, & Mesbah, 1997;Okuyama et al, 1986). The coagulation coefficient depends on particle size.…”

Section: Assessment Of Simultaneous Coagulation and Depositionmentioning

confidence: 93%

“…The decay of the total number of particles in a chamber has been used in some studies to obtain the coagulation coefficient rate (Chen, Namenyi, Yeh, Mauderly, & Cuddihy, 1990;Keith & Derrick, 1960;Kim et al, 2003;Robinson & Yu, 1999) and in some studies to derive the deposition loss rates (Jamriska & Morawska, 2003;Ligocki, Liu, Cass, & John, 1990;Mosley et al, 2001;Okuyama et al, 1986). When the initial number concentration is sufficiently high simultaneous deposition and coagulation affects the development of the size distribution.…”

Section: Assessment Of Simultaneous Coagulation and Depositionmentioning

confidence: 99%

“…The deposition of polydisperse suspensions of solid sodium chloride particles and liquid oleic acid droplets was investigated in Park, Kim, Han, Kwon, and Lee (2001) and Kim, Park, Song, Kim, and Lee (2003). The deposition of combustion particles was investigated by Mosley et al (2001) on polydisperse incense particles, and by Jamriska and Morawska (2003) on polydisperse cigarette smoke and petrol smoke.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the coagulation and deposition of combustion particles in an enclosed chamber with and without stirring

Schnell¹,

Cheung²,

Leung³

2006

Journal of Aerosol Science

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“…UFP, PAH). Particle number and mass deposition in the chamber was assessed by measuring number and volume concentration decay rates (see Jamriska and Morawska, 2003) with tobacco smoke and with condensation-generated diethylhexylsebecate (DEHS) test aerosol of size characteristics similar to tobacco smoke. For UFP number emissions, number deposition was inferred from waterpipe smoke decay measurements following removal of the waterpipe from the dilution tunnel or following the end of DEHS injection.…”

Section: Methodsmentioning

confidence: 99%

Comparison of carcinogen, carbon monoxide, and ultrafine particle emissions from narghile waterpipe and cigarette smoking: Sidestream smoke measurements and assessment of second-hand smoke emission factors

Daher

Saleh

Jaroudi

et al. 2010

Atmospheric Environment

196

133

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The lack of scientific evidence on the constituents, properties, and health effects of second-hand waterpipe smoke has fueled controversy over whether public smoking bans should include the waterpipe. The purpose of this study was to investigate and compare emissions of ultrafine particles (UFP, <100 nm), carcinogenic polyaromatic hydrocarbons (PAH), volatile aldehydes, and carbon monoxide (CO) for cigarettes and narghile (shisha, hookah) waterpipes. These smoke constituents are associated with a variety of cancers, and heart and pulmonary diseases, and span the volatility range found in tobacco smoke. Sidestream cigarette and waterpipe smoke was captured and aged in a 1 m3 Teflon-coated chamber operating at 1.5 air changes per hour (ACH). The chamber was characterized for particle mass and number surface deposition rates. UFP and CO concentrations were measured online using a fast particle spectrometer (TSI 3090 Engine Exhaust Particle Sizer), and an indoor air quality monitor. Particulate PAH and gaseous volatile aldehydes were captured on glass fiber filters and DNPH-coated SPE cartridges, respectively, and analyzed off-line using GC–MS and HPLC–MS. PAH compounds quantified were the 5- and 6-ring compounds of the EPA priority list. Measured aldehydes consisted of formaldehyde, acetaldehyde, acrolein, methacrolein, and propionaldehyde. We found that a single waterpipe use session emits in the sidestream smoke approximately four times the carcinogenic PAH, four times the volatile aldehydes, and 30 times the CO of a single cigarette. Accounting for exhaled mainstream smoke, and given a habitual smoker smoking rate of 2 cigarettes per hour, during a typical one-hour waterpipe use session a waterpipe smoker likely generates ambient carcinogens and toxicants equivalent to 2–10 cigarette smokers, depending on the compound in question. There is therefore good reason to include waterpipe tobacco smoking in public smoking bans.

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Quantitative Assessment of the Effect of Surface Deposition and Coagulation on the Dynamics of Submicrometer Particles Indoors

Cited by 25 publications

References 10 publications

Temporal evolution of the main processes that control indoor pollution in an office microenvironment: a case study

Temporal evolution of the main processes that control indoor pollution in an office microenvironment: a case study

Investigation on the coagulation and deposition of combustion particles in an enclosed chamber with and without stirring

Comparison of carcinogen, carbon monoxide, and ultrafine particle emissions from narghile waterpipe and cigarette smoking: Sidestream smoke measurements and assessment of second-hand smoke emission factors

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