Investigation of the Pollution Level and Affecting Factors of Formaldehyde in Typical Public Places in Guangxi, China

Hong, Wei; Meng, Mianwu; Xie, Junliang; Gao, Dingding; Zeng, Yibei; Ai, Huang; Chen, Chunqiang; Huang, Siyu; Zhou, Zhenming

doi:10.4209/aaqr.2017.08.0272

Cited by 8 publications

(3 citation statements)

References 36 publications

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“…The IAQ of stores in underground shopping centers might differ according to the merchandise sold in that store. Fabrics and leather merchandise can contain formaldehyde-based adhesives [24]. The fashion-accessory stores in the present study sold mainly leather products, including shoes, bags, wallets, and backpacks.…”

Section: Discussionmentioning

confidence: 99%

Perception of indoor air quality (IAQ) by workers in underground shopping centers in relation to sick-building syndrome (SBS) and store type: a cross-sectional study in Korea

et al. 2019

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Background We examined the indoor air quality (IAQ) perceptions of workers and their relationships with the symptoms of sick-building syndrome (SBS) and store types in underground shopping centers. Methods In 2017, 314 store workers in nine underground shopping centers in Seoul, Korea, were assessed. The all participants’ stores were partially opened onto a passage. Using questionnaires, they were asked about their demographics, job characteristics, 16 SBS symptoms, and seven IAQ perceptions. The SBS symptoms were categorized as skin, eye irritation, respiratory, or general. An IAQ perception score was calculated by adding the number of positive responses to each type of IAQ and categorized into three levels. Results The prevalence of SBS symptom groups in the previous month was 43.6% for skin symptoms, 62.4% for eye irritation symptoms, 65.6% for respiratory symptoms, and 64.7% for general symptoms. Participants who perceived IAQ were more likely to have SBS symptoms (odds ratio: 1.81–7.84). The type of store employing the workers was associated with several IAQ perceptions. Subjects who worked in clothing and fashion-accessory stores were more likely to have high IAQ perception scores than those who worked in food services. Conclusions About half of the store workers in underground shopping centers had experienced SBS symptom groups in the previous month. The SBS symptom groups were associated with almost all IAQ perceptions. Because IAQ perception was associated with store type, studies of IAQ in working areas might need to improve store workers’ health in underground shopping centers. Electronic supplementary material The online version of this article (10.1186/s12889-019-6988-6) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Perception of indoor air quality (IAQ) by workers in underground shopping centers in relation to sick-building syndrome (SBS) and store type: a cross-sectional study in Korea

et al. 2019

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“…A summary of CH 2 O levels for > 2000 residential buildings across 22 cities in China showed that at many locations, the CH 2 O level exceeded the average 30-min level of 100 μg/m 3 recommended by the World Health Organization 17 . Monitors of CH 2 O positioned at public places also showed that many sampling sites exceeded this level 18 . In our daily life, we perform ventilation to refresh indoor air.…”

Section: Introductionmentioning

confidence: 99%

Effect of formaldehyde exposure on bacterial communities in simulating indoor environments

Guo

Xiong

Kang

et al. 2021

Sci Rep

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Indoor formaldehyde (CH2O) exceeding the recommended level is a severe threat to human health. Few studies have investigated its effect on indoor surface bacterial communities, affecting habitants' health. This study used 20-L glass containers to mimic the indoor environment with bacterial inputs from human oral respiration. The behavior of bacterial communities responding to CH2O varied among the different CH2O levels. The bacterial community structure significantly changed over time in the 0.054 mg·m−3 CH2O group, which varied from the 0.1 mg·m−3 and 0.25 mg·m−3 CH2O groups. The Chao1 and Shannon index significantly increased in the 0.054 mg·m−3 CH2O group at 6 week, while they remained unchanged in the 0.25 mg·m−3 CH2O group. At 12 week, the Chao1 significantly increased in the 0.25 mg·m−3 CH2O group, while it remained unchanged in the 0.054 mg·m−3 CH2O group. Only a few Operational Taxonomic Units (OTUs) significantly correlated with the CH2O concentration. CH2O-induced OTUs mainly belong to the Proteobacteria and Firmicutes. Furthermore, bacterial communities formed at 6 or 12 weeks differed significantly among different CH2O levels. Functional analysis of bacterial communities showed that inferred genes related to chemical degradation and diseases were the highest in the 0.25 mg·m−3 CH2O group at 12 weeks. The development of nematodes fed with bacteria collected at 12 weeks was applied to evaluate the bacterial community's hazards. This showed significantly impaired growth in the 0.1 mg·m−3 and 0.25 mg·m−3 CH2O groups. These findings confirmed that CH2O concentration and exposure time could affect the indoor bacterial community and formed bacterial communities with a possibly more significant hazard to human health after long-term exposure to high CH2O levels.

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“…Formaldehyde released by wood‐based panels, coating, and paints is one of the indoor main organic pollutants . Meanwhile, formaldehyde is harmful to indoor air quality and human's health due to photochemical and carcinogenic characteristics .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Photocatalytic Activity of Cerium‐Modified CdS‐TiO₂ Photocatalyst for the Formaldehyde Degradation at Room Temperature

Xie

Hong

Meng

et al. 2018

Zeitschrift anorg allge chemie

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The Ce‐CdS‐TiO2 photocatalysts were successfully synthesized by a simple sol‐gel way and loaded on the nickel foam. The specific surface area, crystalline phase, microstructure and surface functional groups of prepared photocatalysts were characterized by Brunauer‐Emmett‐Teller (BET) surface area, X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), and Fourier transform infrared spectroscopy (FT‐IR). The photocatalytic tests of Ce‐CdS‐TiO2 samples demonstrated that Ce as the active component plays an irreplaceable role in degradation of gaseous formaldehyde. The results showed that high Ce doping levels restrained the photocatalytic activity due to lower specific surface area, whereas moderate doping levels showed the highest photocatalytic performance due to higher specific surface area and evenly dispersion of the active component. The rate of formaldehyde degradation on 0.9 wt % Ce‐CdS‐TiO2, 1.5 wt % Ce‐CdS‐TiO2, and 2.1 wt % Ce‐CdS‐TiO2 photocatalysts can reach to 59, 84, and 49 %, respectively, which are higher than pure TiO2 (20 %). Ce‐doping into CdS‐TiO2 photocatalyst produce the Ce‐O‐Ti bonds, which enhanced the interaction between Ce and TiO2. The introduction of Ce increased the UV/Vis absorption of Ce‐CdS‐TiO2 photocatalyst. Furthermore, Ce‐CdS‐TiO2 possesses high photocatalytic performance, since Ce may reduce the recombination of photoexcited electrons and holes.

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Investigation of the Pollution Level and Affecting Factors of Formaldehyde in Typical Public Places in Guangxi, China

Cited by 8 publications

References 36 publications

Perception of indoor air quality (IAQ) by workers in underground shopping centers in relation to sick-building syndrome (SBS) and store type: a cross-sectional study in Korea

Perception of indoor air quality (IAQ) by workers in underground shopping centers in relation to sick-building syndrome (SBS) and store type: a cross-sectional study in Korea

Effect of formaldehyde exposure on bacterial communities in simulating indoor environments

Synthesis and Photocatalytic Activity of Cerium‐Modified CdS‐TiO₂ Photocatalyst for the Formaldehyde Degradation at Room Temperature

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Investigation of the Pollution Level and Affecting Factors of Formaldehyde in Typical Public Places in Guangxi, China

Cited by 8 publications

References 36 publications

Perception of indoor air quality (IAQ) by workers in underground shopping centers in relation to sick-building syndrome (SBS) and store type: a cross-sectional study in Korea

Perception of indoor air quality (IAQ) by workers in underground shopping centers in relation to sick-building syndrome (SBS) and store type: a cross-sectional study in Korea

Effect of formaldehyde exposure on bacterial communities in simulating indoor environments

Synthesis and Photocatalytic Activity of Cerium‐Modified CdS‐TiO2 Photocatalyst for the Formaldehyde Degradation at Room Temperature

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Synthesis and Photocatalytic Activity of Cerium‐Modified CdS‐TiO₂ Photocatalyst for the Formaldehyde Degradation at Room Temperature