書誌事項
- タイトル別名
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- Fractionation of Fulvic Acid Extracted from Lake Sediments Using XAD Resins and the Metal Complexing Ability.
- コショウ タイセイブツ チュウ カラ チュウシュツサレタ フルボサン ノ XAD ジュシ キュウチャク ニヨル ブンカク ト サクカ ノウリョク
抄録
Fulvic acid extracted from lake sediments was treated with Amberlite XAD-2 and XAD-8 resins. The metal complexing ability of the fulvic acid was measured at pH 6.0 with a Cu2+ titration method, in which free Cu2+ was determined with an ion selective electrode. A two binding site model, in which there are two kinds of the molecules having strong and weak complexing ability and they complex with metal ion at the ratio of 1 : 1, was employed for the determination of the stability constant and complexing capacity of the fulvic acid, because the hyperbolic approxmation could apply to the Scatchard plot of the found values.<br>The stability constants of the fulvic acids having strong complexing ability and weak complexing ability were in the range of 6.33-7.12 and 4.35-4.66, respectively. Both colorless fractions of the fulvic acid which were not adsorbed on XAD-2 and XAD-8 resins had such a high complexing ability as 44 and 32 μmol·g-1, respectively.<br>On the other hand, both colored fractions of the fulvic acid which were adsobed on the resins had only little complexing capacity.
収録刊行物
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- 水環境学会誌
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水環境学会誌 16 (10), 690-695, 1993
公益社団法人 日本水環境学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390282680056717056
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- NII論文ID
- 130000301165
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- COI
- 1:CAS:528:DyaK2cXit1GqsLo%3D
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- ISSN
- 18813690
- 09168958
- http://id.crossref.org/issn/09168958
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可