| 英文摘要 |
The project aimed to determine the concentration of emitting formaldehyde and total volatile organic compounds (TVOC) from common volatile products, and the removing ability of common indoor plants. Results showed that formaldehyde concentration can reach ca. 1.5 ppm after placing thinner in a 128-L sealed acrylic box for 1 h. Other 12 tested products yielded no formaldehyde emission or lower than detection limit. A few tested products had TVOC concentration ranging 0.4 – 45.9 ppm at 1 h after placing in sealed acrylic box. Placing each product with one 9-cm potted parlour palm, flamingo flower, peace lily, or boston fern in sealed acrylic box for 8 h. Results showed that formaldehyde and TVOC concentration decreased significantly, and a few products with low TVOC emission could reach 0.
Two private companies with known sick building syndrome in Taipei were chosen, and 15 separated spaces were measured for indoor air quality (IAQ). And changes of IAQ were monitored after placing indoor plants. Results showed that during pre-test period, A company had formaldehyde concentration ranging 0.18 – 0.98 ppm, and 0.14 – 0.19 ppm for B company, all exceeding Taiwan EPA proposed standard concentration of 0.08 ppm. Assembled potted plants were placed in A company and formaldehyde concentration decreased significantly. Before placing indoor plants, formaldehyde concentration were ranged 0.12 – 0.22 and 0.10 – 0.19 ppm for A and B company, respectively. Three 9-cm potted parlour palm, golden pothos, baby rubberplant, and baby Ti were placed in each space. At two to three weeks after placement, formaldehyde concentration decreased significantly, and ranged 0.09 – 0.13 and 0.08 – 0.15 ppm for A and B company, respectively, at the third week. Indoor plants were removed after 3-week placement for one week, and formaldehyde concentration increased during the week. Next, Three 15-cm potted peace lily, parlour palm, and golden pothos were placed in each space. At one or two weeks after placement, formaldehyde concentration decrease could be observed. At the third week, formaldehyde concentration ranged 0.10 – 0.14 and 0.08 – 0.16 ppm for A and B company, respectively. These indicated even indoor decoration were made seven to eight years ago, the decorating materials could still emit formaldehyde. In a 9.9 – 17.0 m2 with 2.3 m height office, above described amount and species of plants should be placed and timely replaced to ensure better IAQs.
Ten conferences were held on Aug 11, 12, 19, 20, 27, 28, Sep 11, 12, Oct 19, and Nov 26 for promoting indoor and community greening. A total of 750 people joined. Information related indoor and community greening were updated online.
Information on office, educational, and community spaces were gathered and edited into House Plants Purify Indoor Air – For Indoor Spaces. Edit of Handbook on Plants Purify Community Air had finished.
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