Effects of Lanthanum and Cerium on Acid Phosphatase Activities in Two Soils
来源期刊：JOURNAL OF RARE EARTHS2004年第5期
论文作者：刘广深 刘维屏 徐杰 徐冬梅
Key words：pedology; lanthanum; cerium; soil; acidic phosphatase; rare earths;
Abstract: To evaluate the security of using thulium,comparision between effects of La and those of Ce on acidic phosphatase activities in red soil and yellow soil in Zhejiang district was studied under conditions of ambient temperature and humidity. Results show that the acid phosphatase from different soil respondes to La and Ce differently. The activity of acid phosphatase in soil 1 declines with the increase of the concentration of La and Ce. The maximum inhibitory ratio of La and Ce reaches 69.8% and 71.0% respectively. But La and Ce have stimulative effect on the activity of acid phosphatase in soil 2. Under the effect of same concentration of the thulium,the acid phosphatase in two soils increases with the extending of culture time.
刘广深1，刘维屏1，徐杰1，徐冬梅1
(1.Environmental Science Institute,Zhejiang University,Hangzhou 310029,China)
Abstract:To evaluate the security of using thulium,comparision between effects of La and those of Ce on acidic phosphatase activities in red soil and yellow soil in Zhejiang district was studied under conditions of ambient temperature and humidity. Results show that the acid phosphatase from different soil respondes to La and Ce differently. The activity of acid phosphatase in soil 1 declines with the increase of the concentration of La and Ce. The maximum inhibitory ratio of La and Ce reaches 69.8% and 71.0% respectively. But La and Ce have stimulative effect on the activity of acid phosphatase in soil 2. Under the effect of same concentration of the thulium,the acid phosphatase in two soils increases with the extending of culture time.
Key words:pedology; lanthanum; cerium; soil; acidic phosphatase; rare earths;
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