Inderscience Publishers

Metallic elements in particulates released during incense-burning at Tzu Yun Yen temple, Taichung, Taiwan

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Concentrations of ambient suspended particulates were measured at Tzu Yun Yen temple (120°, 34´ 10”E; 24°, 16´, 12”N), using a Universal sampler and dry deposition plates. The temple is a characteristic incense-burning and semi-open sampling site. PM2.5 concentrations for Period 1 (average 901µg/m³) were higher than those for Period 2 (average 701µg/m³). Results for average PM2.5-10concentrations showed equal distributions in Period 1 and Period 2. Average ratios of PM2.5/ PM10 were higher in Period 1 (74%) than Period 2 (71%). In addition, the suspended particulate (PM10) elements concentrations during Zhong Yuan Jie, and the first and 15th days of nong li for each month (Chinese lunar calendar) were all higher than during non-Zhong Yuan Jie and non-first and non-15th days. Furthermore, the dry deposition velocities of manganese in fine particulates (PM2.5) and suspended particulates (PM10) were 1.43 and 0.751cm/s, respectively, and the dry deposition velocities of cadmium in fine particulates (PM2.5) and suspended particulates (PM10) were 1.86 and 0.991cm/s, respectively.

Keywords: dry deposition velocities, incense burning, metallic elements, particulate matter, temple, Taiwan

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