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<p>Land being a major constrain in metro cities like Chennai has contributed to the development of closely spaced high-rise apartment complexes which lead to poor indoor air quality. Native indoor plants serve as a natural medium in absorbing air pollution entering indoors mainly through balcony spaces and also enhance the aromatic and visual quality of indoor space. This research has been carried out as a pilot study with an aim to explore the effectiveness of a planting palette comprising native flowering, air-purifying medicinal and vertical wall plants in absorbing the air pollutants in the context of an urban apartment balcony space in Chennai, Tamil Nadu, India. The level of absorption of pollutants such as carbon dioxide, carbon monoxide, total volatile organic compounds, benzene, and formaldehyde was monitored in two scenarios one planted and another non-planted balcony using Internet of Things sensors for a period of 1 month. The results observed on a Thursday for carbon dioxide, carbon monoxide, and total volatile organic compounds for non-planted balcony are 984&#xa0;ppm, 392&#xa0;µg/m<sup>3</sup>, and 75&#xa0;µg/m<sup>3</sup> (highest due to STP activities) when compared to planted balcony with the values 919&#xa0;ppm, 335&#xa0;µg/m<sup>3</sup>, and 71&#xa0;µg/m<sup>3</sup>. The selected plant palette has displayed minimal absorption of formaldehyde and benzene. But both the pollutants are found to reduce gradually within 2 h in the planted balcony and 3 h in the non-planted balcony after the floor mopping activity which contributes to formaldehyde and benzene. Hence, the study proves that plants as a natural medium are inexpensive and best in absorbing air pollutants thereby improving the quality of the indoor environment.</p>

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Enhancing the indoor air quality in an urban apartment as in the case of Chennai using native plants

  • 期刊论文

  • 发表日期：

    2026年1月24日

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  • Swetha Madhusudanan,
  • Radhika Venkatesan,
  • Swapna Babu,
  • Sellappa Nallusamy,
  • Mithileysh Sathiyanarayanan,
  • Marta Zurek Mortka,
  • Jerzy Szymanski

摘要

Land being a major constrain in metro cities like Chennai has contributed to the development of closely spaced high-rise apartment complexes which lead to poor indoor air quality. Native indoor plants serve as a natural medium in absorbing air pollution entering indoors mainly through balcony spaces and also enhance the aromatic and visual quality of indoor space. This research has been carried out as a pilot study with an aim to explore the effectiveness of a planting palette comprising native flowering, air-purifying medicinal and vertical wall plants in absorbing the air pollutants in the context of an urban apartment balcony space in Chennai, Tamil Nadu, India. The level of absorption of pollutants such as carbon dioxide, carbon monoxide, total volatile organic compounds, benzene, and formaldehyde was monitored in two scenarios one planted and another non-planted balcony using Internet of Things sensors for a period of 1 month. The results observed on a Thursday for carbon dioxide, carbon monoxide, and total volatile organic compounds for non-planted balcony are 984 ppm, 392 µg/m3, and 75 µg/m3 (highest due to STP activities) when compared to planted balcony with the values 919 ppm, 335 µg/m3, and 71 µg/m3. The selected plant palette has displayed minimal absorption of formaldehyde and benzene. But both the pollutants are found to reduce gradually within 2 h in the planted balcony and 3 h in the non-planted balcony after the floor mopping activity which contributes to formaldehyde and benzene. Hence, the study proves that plants as a natural medium are inexpensive and best in absorbing air pollutants thereby improving the quality of the indoor environment.