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Indoor formaldehyde removal by three species of Chlorphytum Comosum under the long-term dynamic fumigation system

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Abstract

Gaseous formaldehyde removal efficiency and physiological characteristics of leaves were investigated through a dynamic fumigation system. Three different species of potted Chlorophytum Comosum, (Green Chlorophytum Comosum for its green leaves), CC (Combined the leaves of Chlorophytum Comosum with leaves half green and half white) and PC (Purple Chlorophytum Comosum for its purple leaves), were exposed to formaldehyde for 7 days. The results showed formaldehyde removal efficiencies in the daytime were 71.07% ± 0.23, 84.66% ± 0.19, and 46.73% ± 0.15 at 1 ppm for GC, CC, and GC plants, respectively, and were 36.21% ± 0.24, 62.15% ± 0.19, and 34.97% ± 0.11 at night. This might be due to higher plant physiological activities (e.g., photosynthesis, respiration, and transpiration) during the daytime than at night. Ten physiological indicators of leaves were chosen to evaluate the 7-day fumigation process, which were chlorophyll, free protein, relative conductivity, malondialdehyde (MDA), hydrogen peroxide (H2O2), hydroxyl radical, superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and total antioxidant capacity (T-AOC). Eight of these indicators increased, while chlorophyll decreased by 22.16%, 6.95%, and 25.32%, and CAT decreased by 18.9%, 17.8%, and 25.30% for GC, CC, and PC respectively. Among all the increasing physiological indicators, relative conductivity and MDA showed the greatest increase by 279.32% and 155.56% for PC. A 15-day recovery study was also conducted using MDA and T-AOC as indicators. The results showed that all the tested plants could be tolerant up to the 8 ppm of formaldehyde concentration for 7 days under dynamic fumigation and needed 10–15 days for self-recovery.

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Funding

The authors received partial financial support by the National Natural Science Foundation of China (Grants 21467018), China Scholarship Council (CSC No.201408360050), and Foundation of Jiangxi Education Committee (GJJ170576).

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Correspondence to Mingming Lu.

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Responsible editor: Gangrong Shi

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Li, J., Zhong, J., Zhan, T. et al. Indoor formaldehyde removal by three species of Chlorphytum Comosum under the long-term dynamic fumigation system. Environ Sci Pollut Res 26, 36857–36868 (2019). https://doi.org/10.1007/s11356-019-06701-x

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  • DOI: https://doi.org/10.1007/s11356-019-06701-x

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