文摘
This investigation measures the concentrations of arsenic (As), (As3+ ), (As5+) in total suspended particles (TSP) and dry deposits at five characteristic sampling sites in central Taiwan during the years 2009–2010, and identifies their seasonal variations. The investigation was performed in region in which a science park, transportation, waste incineration facility, fossil fuel combusting steel factory, electronics factory, plastic factory, chemical factory and Taichung Thermal Power Plant (TTPP) are located. The Bei-shi sampling station and He-mei town sampling station were located in, an area of heavy transportation. The Quan-xing sampling station was close to an electronics factory and a fossil fuel combusting steel factory. The As for Chang-Hua sampling station was located at the chemical factory. Finally, the Gao-Mei wetland sampling station was close to a waste incineration; they were characterized as a waste incineration plant and TTPP. The highest average concentrations of arsenic in TSP were found at Quan-xing (industrial) and the lowest were found at He-mei (residential). The average amounts of dry deposited arsenic (As), (As3+ ) and (As5+) were highest at the Quan-xing (industrial) site and lowest at the Gao-mei (wetland) site. The average seasonal concentrations of (As), (As3+ ) and (As5+) in TSP and the average dry deposited amounts were highest in the autumn and lowest in the summer at five sampling sites. Keywords Arsenic (As) TSP Dry deposition Seasonal