Evaluation of indoor air quality by odor units (odor threshold ratio)

Indoor Air Quality

“…12 The chemicals which exceeded 10 odor threshold ratios were acetic acid, acetaldehyde, propanal, pentanal, hexanal, nonanal, decanal, pinene, para-cymene and limonene. 12 Odor threshold ratio is a useful indicator to evaluate the health effect of indoor air chemicals in addition to total volatile organic compounds. 12 Polymer filters treated by plasma-assisted graft polymerization, nonthermal plasma, and plasma-assisted graft polymerization followed by nonthermal plasma treatment were developed for use as multifunctional filters that can simultaneously remove odor and par-ticulate.…”

“…11 Odor has a strong relationship with symptoms of sick building syndrome. 12 Odor threshold ratio, which can be obtained by dividing the concentration level of each chemical by its odor threshold ratio value, was used to evaluate the health effect of 53 chemicals. 12 The total volatile organic chemicals concentrations in laboratories varied from 212 to 17,200 g/m 3 , and the major chemicals detected in indoor air were -pinene, limonene, camphene, paracymene, and 2-butanone.…”

“…12 Odor threshold ratio, which can be obtained by dividing the concentration level of each chemical by its odor threshold ratio value, was used to evaluate the health effect of 53 chemicals. 12 The total volatile organic chemicals concentrations in laboratories varied from 212 to 17,200 g/m 3 , and the major chemicals detected in indoor air were -pinene, limonene, camphene, paracymene, and 2-butanone. 12 The chemicals which exceeded 10 odor threshold ratios were acetic acid, acetaldehyde, propanal, pentanal, hexanal, nonanal, decanal, pinene, para-cymene and limonene.…”

“…12 The total volatile organic chemicals concentrations in laboratories varied from 212 to 17,200 g/m 3 , and the major chemicals detected in indoor air were -pinene, limonene, camphene, paracymene, and 2-butanone. 12 The chemicals which exceeded 10 odor threshold ratios were acetic acid, acetaldehyde, propanal, pentanal, hexanal, nonanal, decanal, pinene, para-cymene and limonene. 12 Odor threshold ratio is a useful indicator to evaluate the health effect of indoor air chemicals in addition to total volatile organic compounds.…”

“…12 Odor threshold ratio is a useful indicator to evaluate the health effect of indoor air chemicals in addition to total volatile organic compounds. 12 Polymer filters treated by plasma-assisted graft polymerization, nonthermal plasma, and plasma-assisted graft polymerization followed by nonthermal plasma treatment were developed for use as multifunctional filters that can simultaneously remove odor and par-ticulate. 13 A nonthermal plasma-treated filter can adsorb a large amount of ammonia, but its performance deteriorates after one month of use, whereas plasma-assisted graft polymerization followed by nonthermal plasma treatment offers filter which deteriorates only slightly.…”