Limonene needed in recycling foamed polystyrene was extracted from the ear of schizonepeta tenuifolia using ligroin.
本文研究从荆芥穗中提取回收聚苯乙烯所需的柠檬烯，其方法是溶剂萃取。
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Objective : The effect of waste batteries leaching on the seedling growth and volatile constituents in leaves of Schizonepeta tenuifolia was assayed.
目的： 研究废旧电池浸出液对荆芥幼苗生长及叶片挥发性成分的影响。
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Result : The results indicated that S. tenuifolia showed resistance to heavy metal polluting, but the high rate of waste batteries leaching had the inhibiting effect to seedlings growth.