tailieunhanh - PM2.5-bound pahs in the indoor and outdoor air of nursery schools in Ha Noi, Viet Nam and health implication

Thirty two daily indoor and outdoor samples at sixteen nursery schools in Ha Noi were taken from March to April 2018. 15 individual PAHs were analyzed by GC/MS. Mutagenic potential (MP) and carcinogenic potential (CP) were used to evaluate carcinogenic and mutagenic risk contribution. The average concentrations were μg/m3 for indoor air and μg/m 3 for outdoor one, which exceeded WHO Air quality guideline (2004) for ambient air. The mean concentrations of indoor and outdoor 15PAHs were ng/m3 and ng/m3 , respectively. There was a good correlation between indoors and outdoors for both and PAHs. Indoor MEQ 7PAHs was ng/m3 , whilst outdoor MEQ 7PAHs was ng/m3 . The mean level of indoor TEQ 15PAH was ng/m3 , whereas the outdoor TEQ 15PAH was ng/m3 . Dibenz(a,h)anthracene (DahA) and benzo(a)pyrene (BaP) were the most contributors among indoor and outdoor PAHs to the carcinogenicity and mutagenity. | pahs in the indoor and outdoor air of nursery schools in Ha Noi Viet Nam and health implication

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