Effect of Simulated Acid Rain and Rare Earth Contamination on Soil Enzyme Activities in Rare Earth Ming Area, South Jiangxi, China

Abstract:

This study focus on the influence of acid rain, single and combined contamination of La and Ce, rare earth leachate of tailings on urease and catalase activities with the methods of leaching experiment and indoor thermostatic incubation. The results indicated that acid rain and rare earth contamination caused the change of soil enzyme activities. The change of urease activity accorded with hormesis effect of rare earth; at the preliminary stage of incubation, urease activity began to heighten and reached maximum value at 10th day; after being incubated for 15 days, urease activity initiated to reduce remarkably, and continued to 30th day. Accordingly, catalase activity was inhibited, then promoted slightly, the minimum value appeared in different time incubated by different solution: 15th day (La, Ce), 10th day(La + Ce), 5th day (rare earth leachate).

• Periodical: Advanced Materials Research (Volumes 610-613)
• Pages: 2954-2958
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.610-613.2954
• Online since: December 2012
• Authors: Xiao Jun Wen*, Chang Qun Duan, Da Chao Zhang
• Keywords: Ce (Cerium), La (Lanthanun), Rare Earth (RE), Simulated Acid Rain, Soil Enzyme Activity

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