Estimating the concentration of indoor particles of outdoor origin: A review

Figures & data

Table 1. Mean values of the infiltration factor, penetration efficiency, and deposition rate for PM₁₀ and PM_2.5 (Ozkaynak et al., 1996)

	F INF	P	k
PM10	0.60	1.00	0.65
PM2.5	0.71	1.00	0.39

Figure 1. (a) and (b) Infiltration factor as a function of particle size (Abt et al., 2000).

Figure 2. (a) and (b) Deposition rate as a function of particle size (Abt et al., 2000).

Table 2. Infiltration factor, calculated as slope of the regression line of indoor or personal on outdoor concentration data (Ott et al., 2000)

	Phillipsburg	Phillipsburg	Riverside	Toronto
	(Indoor)	(Personal)	(Personal)	(Personal)
F INF	0.53	0.54	0.55	0.61

Table 3. Estimated values of F _INF, P, and k for PM_2.5 (Long et al., 2001a)

	P		k
F INF	Summer	Winter	Summer	Winter
0.75	1.11	0.54	0.15	0.10

Table 4. Application of different steady-state techniques (Meng et al., 2005b)

	RCS	MBM	EMM	MMM
F INF	0.35	0.40 (P = 1, k = 1.5 hr^−1)	0.54	0.69

Table 5. Mean values of penetration efficiency (P), deposition rate (k), and infiltration factor (F _INF) for PM₁₀, PM_2.5, and UFPs (Diapouli, 2008)

	PM10	PM2.5	PNC
P	0.76	0.85	0.80
k (hr^−1)	0.29	0.17	0.33
F INF	0.56	0.71	0.60

Table 6. Mean values of PM_2.5 infiltration factor (F _INF), calculated by the application of different methodologies (Diapouli, 2008)

Methodology	F INF
BC as surrogate	0.77
SO4 ^2− as surrogate	0.84
SO4 ^2− as surrogate with a correction factor	0.75
Dynamic model	0.75

Figure 3. Summary of results on deposition rate (k).

Figure 4. Summary of results on penetration efficiency (P).

Figure 5. Summary of results on infiltration factor (F _INF).

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