氯化稀土与咪唑配合物对土壤微环境的影响

The Effect of Coordination Complexes of Rare Earth Chlorides with Imidazole on Soil microenvironment.

测定了４种氯化稀土与咪唑配合物：ＲＥＣｌ３·２Ｉｍ·２ＨＣｌ·４Ｈ２Ｏ（ＲＥ＝Ｌａ，Ｐｒ，Ｄｙ，Ｙ；Ｉｍ＝咪唑）及单一稀土盐（Ｌａｃｌ３）对土壤微生态环境的影响。结果表明：不同浓度的各配合物对土壤中的细菌、霉菌的生长和土壤过氧化氢酶、脱氢酶的活性都有一定的抑制作用。在测试化合物浓度为２０ｍｇ·ｇ－１土样中：细菌抑制率达６４％～７１％，霉菌为３０％～４３％，对土壤过氧化氢酶活抑制为２１．５％～３８．３％，脱氢酶活性明显降低。稀土配合物的应用对土壤微环境的影响值得重视。

The effect of four kinds of coordination complexces of the rare earth chlorides with imidazode;RE Cl 3·2Im·2HCl·4H 2O(RE=La,Pr,Dy,Y;Im=Imidazole)and simple chloride salt on soil microenvironment was investigated in the laboratory. The result shows that different concentration of the rare earth coordination compounds may have certainly inhibitory effect on bacteria, mold, catalase and dehydrogenase in soil. When concentration of the rare earth compound is 20mg/g.inhibitory effect on bacteria is 64%～71%,on mold is 30.3%～43%,and on soil catalase is 21.5%～38.3%;It can not be ignored that the rare earth coordination complexes has effect on soil microenvironment.