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Updated: Oct 20, 2025

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide
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Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

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ナノスケールゼロバルント鉄によるアルセニット結合反応の鍵となるメカニズム特性

Li Cheng Kao1, Yang Ha1, Wan-Jou Chang2

  • 1Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.

Journal of the American Chemical Society
|September 15, 2021
PubMed
まとめ

ナノスケールのゼロバレンチ鉄 (nZVI) は,アルセニートを酸化してアルセネートに効果的に閉じ込めます. この研究では,X線吸収スペクトロスコピーを用いて一時的な反応中間物質と活性部位を特定します.

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Formation of Complex Ions03:45

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A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
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Color in Coordination Complexes
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Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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