{"created":"2023-06-19T09:16:39.064750+00:00","id":29184,"links":{},"metadata":{"_buckets":{"deposit":"44242d29-9241-4db5-9bdf-53d72cc17234"},"_deposit":{"created_by":1,"id":"29184","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"29184"},"status":"published"},"_oai":{"id":"oai:kumadai.repo.nii.ac.jp:00029184","sets":["448:449"]},"author_link":["147089","147087","146928","109695","147088"],"item_16_alternative_title_23":{"attribute_name":"タイトル（ヨミ）","attribute_value_mlt":[{"subitem_alternative_title":"カネツ ダッチャク GC MS による PM_<2.5> チュウ タカン ホウコウゾク タンカスイソ ルイ ノ チョクセツ ブンセキ ト クマモト ニ オケル ニチナイ ヘンドウ キセツ ヘンドウ ヤ ノヤキ ノ 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spectrometry:TD-GC/MS) について検討した．本研究では，フィルター捕集したPM_<2.5>中のPAHsについてTDの条件検討を行うとともに，TD法とSE法の比較検討を行った．その結果，煩雑で時間のかかるSE法に比べTD法では溶媒を用いる前処理が不要なばかりか，同じフィルターを処理した場合桁違いに高感度なことが示された．簡便かつ高感度なため，比較的短いサンプリング (1～3日) を長期間続けることができ，PM_<2.5>中PAHsの詳細な季節変動の追跡が達成された．PM_<2.5>濃度は四季を通じて大きな推移を示さない一方，PM_<2.5>中のPAHsは冬から春に高く，逆に夏にはほとんど観測されなかった．これは冬場の中国大陸におけるPAHsの放出とその移流が主な原因と考えられる．さらに，本法の高感度な特性を生かし，短時間のサンプリングによるPAHsの変動をみることができた．例えば4時間ごとにサンプリングを行い，日内でPAHs濃度が推移する様子を捉えることができた．また，阿蘇山の草原を20 km程度自家用車で走行し，野焼きで発生したPAHsの組成を調べることができた．野焼きの際に得られたPAHsは，季節変動の調査で得られたPAHsに比べて3～4環の低分子量のPAHsが多く，市内で1～3日採取したPM_<2.5>中のPAHsと組成が異なった．以上のようにTD-GC/MSによるフィルターに捕集したPM中PAHsの分析条件を確立し，特徴ある分析結果を示して本法の有用性を示した．","subitem_description_type":"Other"}]},"item_16_description_77":{"attribute_name":"URL","attribute_value_mlt":[{"subitem_description":"https://www.jstage.jst.go.jp/article/bunsekikagaku/64/8/64_571/_article/-char/ja/","subitem_description_type":"Other"}]},"item_16_publisher_36":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"日本分析化学会 = The Japan Society for Analytical 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