Behaviors of Trace Elements in Tsukui Reservoir Inferred from ICP-MS Analysis.
スポンサーリンク
概要
- 論文の詳細を見る
Trace element determinations for the reservoir (Lake Tsukui), sampled monthly during September 1996 to May 1997, were performed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) . Major cation, anion, electric conductivity (EC), pH, dissolved oxygen (DO), chemical oxygen demand (COD), biochemical oxygen demand (BOD) and chlorophyll-a (Chl-a) were determined as well. Most of the elements and other parameters such as water temperature were uniformly distributed in both vertical and lateral directions at the same sampling date, indicating that the lake water was well mixed. On the other hand, there were lateral and vertical variations for PO<SUB>4</SUB> on February 97 and vertical variations for DO, Mn, Co and W on May 97. These variations may be caused by biological activities of either bacteria or phytoplankton and succeedingly occurred dissolution of the elements from the sediment. Tungsten release was supported by a simulation experiment under anaerobic condition. On the contrary, significant monthly variations were observed for many elements. Those observations suggest 1) time scale of water exchange of the lake <I>Tc</I> is less than one month, 2) time scale of water mixing in lateral direction <I>Tl</I> is less than <I>Tc</I>, 3) time scale of water mixing in vertical direction <I>Tv</I> is less than <I>Tl</I> and <I>Tv</I>, is estimated between 24 and 96 hours by simulation (in summer), 4) time scale of biological activity and elements release from sediment, <I>Tb</I> and <I>Tr</I> are less than <I>Tv</I>.
- 日本環境化学会の論文
日本環境化学会 | 論文
- 廃棄物埋立地浸出水および処理水中の無機成分、ジオキサン、フェノール類およびフタル酸エステル類の濃度
- 有機スズ代替船底防汚剤による広島湾北部海域の底質汚染状況
- 広島湾北部における有機スズ代替船底防汚剤による海域の汚染状況について
- 難燃処理済スチレンポリマー中のポリ臭素化ジフェニルエーテルの溶媒抽出及び熱脱着 GC/MS 分析
- プレカラム分離導入システムを用いたダイオキシン類の測定