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Toxicity and biodegradability of a soil conditioner [German]

机译：土壤调节剂的毒性和生物降解性[德语]

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摘要

The soil conditioner Amalgerol(R)-Premium was investigated with regard to its toxicity its effect on the growth of microorganisms and the biodegradability of its hydrocarbon components in soil. Concentrations up to the 1000-fold of the recommended amount of application were not to be toxic in water or in aqueous soil elutriate. Only a 1000-2000-fold higher concentration than the recommended amount demonstrated an inhibiting effect on the growth of E. coli, V. fischeri and a mixed population of soil bacteria; the inhibiting effect decreased with time. A lower concentration resulted partially even in a stimulation of growth. In soil, the hydrocarbon content of a 1000-fold concentration of the recommended amount of application was reduced by about 90% within 8 days at 10-30 degrees C in an open system, 50% had disappeared already after 24 h. In a closed system (gas-tight), the hydrocarbon content decreased by 24-31% after 8 days at 10-30 degreesC. The presence of a N-P-K fertilizer had no effect on the hydrocarbon loss in soil.
机译：关于其对土壤中烃组分的微生物生长的影响，研究了土壤调节剂氨基酚（R） - 预备助剂对土壤中的烃组分的生长性和其生物降解性。高达1000倍的推荐施用量的浓度在水中或水土中的水溶液中不毒性。浓度高于推荐量的1000-2000倍，表明了对大肠杆菌的生长，V.Fischeri和混合土壤细菌群体的抑制作用;抑制作用随时间降低。即使在刺激生长中，较低的浓度也部分导致。在土壤中，在开放系统中，在10-30℃下，1000倍浓度的碳氢化合物含量在10-30℃下减少了约90％，在24小时后已经消失了50％。在封闭的系统（气密）中，在10-30℃的8天后，烃含量下降24-31％。 N-P-K肥料的存在对土壤中的烃损失没有影响。

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