検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Comparative study of granitic and sedimentary groundwater colloids by flow-field flow fractionation coupled with ICP-MS

流動場分画法とICP-MSを用いた花崗岩系地下水と堆積岩系地下水のコロイドの比較

斉藤 拓巳; 浜本 貴史*; 水野 崇; 岩月 輝希 ; 田中 知*

Saito, Takumi; Hamamoto, Takafumi*; Mizuno, Takashi; Iwatsuki, Teruki; Tanaka, Satoru*

流動場分画法とICP-MSを組み合わせることで、花崗岩系地下水および堆積岩系地下水に含まれるコロイドの連続的なサイズ分布と元素組成を評価した。花崗岩系地下水には、10nm以下と140nm以上の領域に、有機物コロイドや無機元素が存在していた。10nm以下に存在する有機物コロイドは発色団と蛍光団の分布の点で異なる複数の成分からなり、蛍光団に富む有機物コロイドと大部分の無機元素のサイズ分布が対応していた。堆積岩系地下水では、5nm以下のサイズ領域に、有機物コロイドと無機コロイドが存在し、より大きなサイズ領域に、無機コロイドが存在した。有機物コロイドはサイズと発色団と蛍光団の分布の点で均質であった。無機微量元素のサイズ分布は、元素によって異なり、異なるホスト相の存在が示唆された。

Size distribution and elemental compositions of colloids in granitic and sedimentary deep groundwater was determined by flow field flow fractionation (Fl-FFF) combined with ICP-MS. In the granitic groundwater organic colloids and various inorganic elements were found in limited size ranges ($$<$$10 nm and $$>$$140 nm). The presence of different types of organic colloids was suggested in this groundwater. Most of the inorganic elements exhibited similar size distributions at $$<$$10 nm, which were largely overlapped with organic colloids rich in fluorophores. In the sedimentary groundwater small organic and probably inorganic colloids were found at $$<$$5 nm together with relatively large inorganic colloids. Organic colloids in this groundwater were homogeneous in terms of their sizes and the compositions of chromohores and fluorophores. The size distribution of inorganic elements depended on their types, indicating the presence of different host colloidal phases for them.

Access

:

- Accesses

InCites™

:

パーセンタイル:63.85

分野:Chemistry, Analytical

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.