Indoor air quality analysis of residential buildings in northeast China based on field measurements and longtime monitoring

Huang, Kailiang; Song, Jiasen; Guo, Feng; Chang, Qunpeng; Bian, Jiang; Wang, Jun; Sun, Wei; Li, Huixing; Wang, Jinming; Fang, Xianshi

doi:10.1016/j.buildenv.2018.08.022

Cited by 89 publications

(49 citation statements)

References 30 publications

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“…Associations between 1st or 4th quarter births in northern China and lower school test scores have several possible explanations. First, related to the question posed in this study, our findings could be at least partially explained by the lower natural ventilation rates (fresh air change rate) during the severe cold quarters compared with the warm quarters of the year . High carbon dioxide (CO 2 ) concentrations in the birth residence could damage brain development during gestation and infancy and lead to neural and learning disabilities in the subsequent lifetime .…”

Section: Discussionmentioning

confidence: 88%

“…However, cold outdoor temperatures in winter mean that household ventilation can be very low, because not only do people tend to close windows to maintain indoor thermal comfort, but also building envelopes are well‐sealed so as to save energy in residential heating . In recent studies, residences in northern China were found to have significantly lower household ventilation in winter than in summer . Air change rate in 214 bedrooms in Harbin (a typical city in north China) was averaged in 0.29 hour −1 (range: 0.02‐0.70 hour −1 ; 75% bedrooms <0.38 hour −1 ) when windows were closed during winter .…”

Section: Introductionmentioning

confidence: 99%

“…14,20 In northeast China, ambient climate and household ventilation levels are notably different in different seasons. [28][29][30][31] Outdoor temperature is not so high in summer and people often open windows.…”

Section: Introductionmentioning

confidence: 99%

“…[30][31][32] In recent studies, residences in northern China were found to have significantly lower household ventilation in winter than in summer. 29,31 Air change rate in 214 bedrooms in Harbin (a typical city in north China) was averaged in 0.29 hour −1 (range: 0.02-0.70 hour −1 ; 75% bedrooms <0.38 hour −1 ) when windows were closed during winter. 31 In another study in Tianjin and Cangzhou of China, ventilation rates during sleeping time in night were measured in 399 homes and were significantly lower in winter than in summer (0.30 vs 1.11 hour −1 ).…”

Section: Introductionmentioning

confidence: 99%

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Birth month is associated with learning capacity in childhood in Northeast China

Liu

Chen

et al. 2019

Indoor Air

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It is difficult to evaluate long‐term ventilation and indoor‐outdoor temperature variation on‐site in the birth residence so as to investigate their associations with learning capacity from childhood through adolescence. Here, we conducted a questionnaire‐based retrospective cohort study in ten schools from two northeast China cities with warm summers and severe cold winters when residences had very low air exchange rates. Scores for Chinese, Mathematics, and English in the final exams of the summer semester in June 2018 were collected to evaluate learning capacity. We surveyed 6238 students aged 14.7 (SD: 2.1) years old. Using the 2nd quarter (April‐May‐June) birth as reference, 4th quarter (October‐November‐December) birth consistently was significantly associated with lower scores in Chinese in bivariate (β, 95%CI: −3.2, −4.3 to −2.0) and multivariate (−1.8, −2.4 to −0.8) linear regression analyses. Stratified sub‐analyses showed significant associations for male (−2.4, −3.7 to −1.1), urban (−2.4, −3.4 to −1.4), and primary students (−2.9, −4.5 to −1.4). Since household ventilation and indoor‐outdoor temperature variation had great differences between the 2nd and 4th quarter of year, our results suggest that these two factors in the birth residence could be associated with learning capacity in childhood, especially for male and primary students in northeast China.

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Section: Discussionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Birth month is associated with learning capacity in childhood in Northeast China

Liu

Chen

et al. 2019

Indoor Air

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“…Moreover, there were a lack of mechanical ventilation systems in most residential buildings of Northeast China. Furthermore, burning coal was still the main source of central heating, leading to indoor and outdoor environmental pollution [44]. Figure 4 shows the structural equation modeling results inferred from field measurement data.…”

Section: Model Evaluationmentioning

confidence: 99%

The Combined Effect of Indoor Air Quality and Socioeconomic Factors on Health in Northeast China

Chen

2020

Applied Sciences

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Research has increasingly demonstrated that complex relationships exist between residential indoor air quality, health and socioeconomic factors. However, few studies have provided a comprehensive understanding of these relationships. The purpose of this paper, therefore, was to use structural equation modeling to identify the combined effect of residential indoor air quality and socioeconomic factors on occupants’ health, based on field measurement data in Northeast China. The results showed that socioeconomic status had a direct impact on the occupants’ health with the path coefficient of 0.413, whereas the effect from indoor air quality was 0.105. Socioeconomic status posed the direct effect on indoor air quality with path coefficients of 0.381. The weights of PM2.5, CO2, TVOC (Total Volatile Organic Compounds), and formaldehyde concentration to the indoor air quality were 0.813, 0.385, 0.218, and 0.142, respectively. Relative contributions of Income level, education level, and occupation prestige to socioeconomic status were 0.595, 0.551, and 0.508, respectively. Relationships between indoor air quality, socioeconomic factors and health were further confirmed based on multiple group analysis. The study defines and quantifies complex relationships between residential indoor air quality, socioeconomic status and health, which will help improve knowledge of the impacts of the residential indoor environment on health.

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Study on Optimization of Winter Ventilation Strategy for Newly Decorated Kitchen in Severe Cold Region

Huang

Wang

Guo

et al. 2020

Environmental Science and Engineering

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Indoor air quality analysis of residential buildings in northeast China based on field measurements and longtime monitoring

Cited by 89 publications

References 30 publications

Birth month is associated with learning capacity in childhood in Northeast China

Birth month is associated with learning capacity in childhood in Northeast China

The Combined Effect of Indoor Air Quality and Socioeconomic Factors on Health in Northeast China

Study on Optimization of Winter Ventilation Strategy for Newly Decorated Kitchen in Severe Cold Region

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