Control of asthma triggers in indoor air with air cleaners: a modeling analysis

Table 2 Model Inputs for Contaminant Emission Rates and Filtration Removal Efficiency Rates

Contaminant /Particle size	Emission Rate	Deposition Rate (hr^-1)	1-inch (%)	5-inch (%)	High Efficiency (%)	Portable (%)
Cat Allergen^a
0.54	0.0688 μg/hr	0.052	2.5	29.2	90.7	71
0.875	0.0688 μg/hr	0.15	2.5	29.2	90.7	71
1.6	0.1376 μg/hr	0.35	20.7	47	91.8	71
2.7	0.5502 μg/hr	1	20.7	47	91.8	71
4	1.8895 μg/hr	2.2	55.3	77.8	96.5	72
5.25	2.0953 μg/hr	3.5	55.3	77.8	96.5	80
7.4	5.5885 μg/hr	6.5	74.3	86.9	98.4	80
9	10.899 μg/hr	10	74.3	86.9	98.4	80
ETS^b
0.0575	1.31 mg/cig	0.02	0	14.6	90.1	70
0.1475	2.84 mg/cig	0.005	0	14.6	90.1	70
0.31	2.84 mg/cig	0.018	0	14.6	90.1	70
0.71	1.31 mg/cig	0.08	2.5	29.2	90.7	71
Outdoor Fungal Spores
2.5	NA	0.9	14	47	91.8	71
Virus^c
2.1	35.3 q/hr	0.6	14	47	91.8	71
4.5	29.4 q/hr	2.8	55	77.8	96.5	72
7.3	1.8 q/hr	6.5	73	86.9	98.4	80
9.4	0.5 q/hr	10	74	86.9	98.4	80

^a Between the hours of 7 am – 10 pm, the cat allergen concentration increases for 33% from the intermittent allergen release. Emission rates based on Custovic et al. [76].
^b A total of 8 cigarettes per day. Per cigarette emission rates (mg/cigarette) based on Klepeis et al. [46].
^c Emission rate of infectious doses (or quanta) per hour (q/hr) based on Liao et al. [56].

ISSN: 1476-069X