2024-03-29T13:00:24Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00002857
2022-12-15T03:36:04Z
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大気・降水中に含まれる多環芳香族炭化水素類(PAHs)の測定とその挙動
大気・降水中に含まれる多環芳香族炭化水素類(PAHs)の測定とその挙動
Determination and the Behavior of Polycyclic Aromatic Hydrocarbons (PAHs) in Air and in Precipitation
大浦, 孝祐
村山, 等
家合, 浩明
狩野, 直樹
今泉, 洋
Polycyclic aromatic hydrocarbon (PAHs)
Atmospheric and precipitation samples
Niigata Prefecture
GC-MS
Atmospheric and precipitation samples were taken at Niigata site (urban region which is in Niigata-city) and at Kasabori site (mountains area which is in Sanjou-city) in Niigata Prefecture during the period from August, 2005 to May 2006. Polycyclic aromatic hydrocarbon (PAHs) of 19 substances were determined by using the pressorized liquid extraction (PLE) method and GC-Ms to investigate the behavior of FAHs. New collection method of combining Quartz fiber filter paper (QFP), Emu-C18 disk (C18) and Active carbon fiber filter paper (ACEP) was employed for collecting atmospheric Pans in this work. The following matters have been mainly clarified from this work. (1) The atmospheric PAHs having more than 5 rings were corrected by QFP for 89. 8~100 %, the Pans having 4 rings were collected by C18 for 58.0~72. 3 %, and the FAHs having 3 rings were by ACFP for 41.6~73.6 % (though low recovery of FAHs having 3 tings in winter). (2) The annual average concentration of FAHs is 21 ng/m^3 at the urban region and 9. 9 ng/m^3 at the mountains area, In winter and spring, similar concentration level of total PAHs were found between at the urban region and at the mountains area. On the other hand, in summer and autumn, the concentration of total PAHs at the urban region is 4~6 times larger than that at the mountains. area. (3) PAHs amounts in precipitation increased in winter at the mountains area. (4) The PAHs composition ratio in precipitation showed two composition patterns (i. e. in case of (I) summer and autumn, (II) winter and spring) at 2 sites in Niigata Prefecture. (5) Both the concentrations of PAHs in air and those in precipitation increased in winter, but no clear correlation was observed between them by correlation analysis.
日本環境化学会
2007-06
jpn
journal article
http://hdl.handle.net/10191/21905
https://niigata-u.repo.nii.ac.jp/records/2857
AN10547099
09172408
環境化学
環境化学
17
2
205
216
https://niigata-u.repo.nii.ac.jp/record/2857/files/17_2_205-216.pdf
application/pdf
1.3 MB
2019-07-30