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題 名 | 土壤對三種含硼陰離子的吸附與解吸=Three Anion of Boron Adsorption and Desorption by Soils |
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作 者 | 鄭澤群; 李隆; 馮武煥; | 書刊名 | 土壤與環境 |
卷 期 | 2:1 1999.03[民88.03] |
頁 次 | 頁25-34 |
分類號 | 434.223 |
關鍵詞 | 硼陰離子; 吸附; 解吸; Boron anion; Adsorption; Desorption; |
語 文 | 中文(Chinese) |
中文摘要 | 本文研究了採自西安、廣州、湖北的土壤對B(OH)�瓷B[B�淋��(OH)�淫��>(B�記��)�蘆漣l附與解吸。 結果表明:Langmuir和Freundlich方程式對試驗資料擬合較好,其描述的曲線與實際資料變化的趨勢柑符或基本相符,且Langmuir方程式優於Freundlich方程式;由Langmuir方程式計算的不同土壤的硼吸附容量在10-200 mg/kg之間;許多土壤性質影響硼在土壤中的行為,本文經通徑分析發現,電導率對硼吸附影響最大,有機質次之,陽離子代換量最小;硼的解吸可分為兩類即可逆型與滯後型,B(OH) �痕爾悝l屬於可逆型,[B �淋��(OH)�淫�援M(B�記��)�蘆爾悝l屬於滯後型;滯後現象似乎主要與硼的陰離子種類有關,而土壤性質僅影響滯後的程度; 同一土壤 B(OH) �痕爾悝l量最大,[B �� O �� (OH �淫�揭舅均A(B�記�輊�) 最小。 |
英文摘要 | This paper dealt with adsorption and desorption of B(OH)��-[B�淋f��(OH)�淫�� and (B�記��)�� by soils. The results showed that Langmuir and Freundlich equations were the best modles for three anion of boron respectively, and the former was superior to the latler. Boron adsorption was affected by soil characteristics, being in the order of EC>O. M.>CEC. The adsorption capacity calculated by Langmuir equation ranged from 10 to 200 mg/kg. The boron desorption was indicated two types: reversibility and delay. The desorption of B(OH)�� was reversible, [B�淋��(OH)�淫�� and (B�記��)�� sluggishly. The delaying appearance related to the type of boron anion, and soil characteristics only influenced delaying extent. The desorption amount for same soil was in the sequence: B(OH)��>[B�淋��(OH)�淫��>(B�記��)��. |
本系統中英文摘要資訊取自各篇刊載內容。