Current Research on Agriculture and Life Sciences
- Volume 2
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- Pages.63-67
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- 1984
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- 2287-271X(pISSN)
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- 2288-0356(eISSN)
Adsorption and Activity Changes of Trifluralin by Clay Minerals
점토광물(粘土鑛物)에 의한 Trifluralin의 흡착(吸着) 및 활성변화(活性変化)
- Lee, Jyung Jae (Dept. Agric. Chemistry, Coll. of Agric., Kyungpook Natl. Univ.) ;
- Choi, Jyung (Dept. Agric. Chemistry, Coll. of Agric., Kyungpook Natl. Univ.)
- Published : 1984.12.30
Abstract
This study was carried out to know the Trifluralin adsorption experiment was determined with slurry method and the bioassay was conducted with barley seedlings. The adsorption of Trifluralin on clay minerals nearly was reached to eqilibrium concentration by shaking for 18 hours. The more the amount of clay minerals, the more Trifluralin was adsorbed by clay minerals. However the amount of Trifluralin adsorption per gram of clay minerals was reduced. The amount of Trifluralin adsorbed was higher on Montmorillonite than Zeolite and Kaolinite. And Kd value of Trifluralin was the greatest on the Montmorillonite.
Kaolinite, Zeolite 및 Montmorillonite에 Trifluralin을 첨가(添加)하여 흡착실험(吸着實驗)을 행하고 대맥(大麥)을 사용(使用)하여 점토(粘土) 현탁액중(懸濁液中)에서의 Trifluralin의 활성변화(活性變化)를 조사(調査)하였다 Trifluralin의 흡착량(吸着量)은 Montmorillonite>Zeolite>Kaolinite의 순서(順序)이었으며 점토량(粘土量)이 많아질수록 흡착량(吸着量)은 증가(增加)되었으나, 단위(單位) 중량당(重量當) 흡착량(吸着量)은 감소(減少)하였다. Trifluralin의 농도(濃度)가 높을수록 흡착량(吸着量)은 증가(增加)하였으며 각(各) 농도(濃度)에서 Montmorillonite가 가장 높은 Kd치(値)를 나타냈다. Trifluralin은 현탁액(懸濁液)의 pH변화(變化)에도 불구하고 흡착량(吸着量)의 차이(差異)는 없었다. 이는 점토(粘土) 표면(表面)에 Trifluralin이 물리적(物理的)인 힘에 의해서 흡착(吸着)된 것이라 판단(判斷)되었다. Trifluralin의 농도(濃度)가 증가(增加)함에 따라 대맥(大麥)의 생육(生育)은 조해(阻害)되었으나 점토광물(粘土鑛物)의 첨가(添加)로 대맥(大麥)의 생육조해율(生育阻害率)은 약간 감소(減少)되었다.
Keywords