Concentrations of Formic Acid, Acetic Acid, and Ammonia in Newly Constructed Houses.
Int J Environ Res Public Health
; 17(6)2020 03 16.
Article
em En
| MEDLINE
| ID: mdl-32188069
ABSTRACT
Herein, the concentrations of formic acid, acetic acid, and ammonia in samples of indoor air for 47 new houses were measured two weeks after completion. The houses were fabricated with light-gauge steel structures. The measurements were performed in living rooms and bedrooms without furniture and outdoors. Air samples were analyzed using ion chromatography. The mean values were 28 (living room), 30 (bedroom), and 20 µg m-3 (outdoor air) for formic acid; 166 (living room), 151 (bedroom), and 51 µg m-3 (outdoor air) for acetic acid; and 73 (living room), 76 (bedroom), and 21 µg m-3 (outdoor air) for ammonia. The total values of the three substances accounted for 39.4-40.7% of the sum of chemical compound values. The analyzed compounds were indicated by two principal components (PC), PC1 (30.1%) and PC2 (9%), with 39.1% total variance. Formic acid, acetic acid, and ammonia were positively aligned with PC1 and negatively aligned with PC2. Factors such as room temperature, aldehydes, and phthalates were positively aligned with PC1 and negatively aligned with PC2. Furthermore, concentrations of formic acid, acetic acid, and ammonia were significantly and positively correlated with room temperature (p < 0.05).
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Base de dados:
MEDLINE
Assunto principal:
Poluição do Ar em Ambientes Fechados
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Poluentes Atmosféricos
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Amônia
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article