北京市春季居室内生物污染特征及影响因素分析

doi:10.19784/j.cnki.issn1672-0172.2022.05.006

Abstract

Abstract: In order to investigate the biological pollution in the indoor environment over Beijing in spring, the indoor dust samples of 32 households were sampled for 5 weeks from March to April 2017. The concentrations of allergens and microorganisms were detected by enzyme-linked immunosorbent assay and pour plate method, respectively, and the effects of feeding pets, furniture usage, and environmental temperature and humidity on the biological concentrations were discussed. The results showed that from March to April 2017, the concentration of Der f1 allergen in the indoor environment of Beijing was significantly higher than that of Der p1 (P<0.001), with the mean values of 74.91 ng·g-1 and 13.45 ng·g-1, respectively. The bacterial concentration was significantly higher than the fungal concentration (P<0.001), with the mean values of 3.06×106 CFU·g-1 and 5.77×103 CFU·g-1. The correlation analysis showed that the age of the user of the bed was significantly negatively correlated with the bacterial concentration (P<0.01), the temperature was positively correlated with the bacterial concentration and fungal concentration (P<0.05), and there was a positive interaction between bacteria and fungi (P<0.05). Other factors have no correlation with the concentration of allergens and microorganisms. The study shows that the main biological pollutants in the residential environment in Beijing are the dust mite allergen Der f1 and bacteria, and temperature has an effect on the concentration of microorganisms.

Key words: Indoor environment, Biological pollution, Concentration characteristics, Influencing factors

CLC Number:

ZHANG Qingling, FENG Sumei, YAO Yanchun, LIU Ying, WANG Tongshuai, ZHAO Jindan. Analysis on the characteristics and influencing factors of indoor biological pollution over Beijing in spring[J]. Journal of Appliance Science & Technology, 2022, 0(5): 44-49.

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Analysis on the characteristics and influencing factors of indoor biological pollution over Beijing in spring

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