修复含Pb^(2+)污水的植物筛选

Screening of Plants to Remedy Pb^(2+)-Containing Sewage

以香蒲、水芹菜、绿叶苋菜为研究对象,采用水培方法在不同Pb2+初始浓度条件下,研究了它们对重金属Pb2+的吸收和累积特性。结果表明,Pb2+在3种植物根系的富集明显高于茎叶;3种植物对Pb2+的累积量大小依次为香蒲>水芹菜>绿叶苋菜;3种植物对Pb2+的去除率大小依次为香蒲>水芹菜>绿叶苋菜。

With cattail, water celery, green leafy amaranth as the research objects, their absorption and accu- mulation characters for Pb2＋ were studied by water culture method under different Pb2＋ initial concentrations. The results showed that.Pb2＋ enrichment of roots was significantly higher than that of stems and leaves,Pb2＋ accumulation of three kinds of plant was cattail〉water celery〉green leafy amaranth, Pb2＋ removal rate of three kinds of plant was cattailS〉water celery〉green leafy amaranth also.