首钢邻山和植物园植物叶片含硫量的对比

 采用比浊法消解和定容、IRIS advantage型等离子体发射光谱仪测定首钢邻山的17种植物叶片和北京植物园邻山相应的植物种类叶片含硫量.结果表明,茜草等5种植物叶片在两个样点的含硫量均排列在前5位,并与其余的植物种类叶片含硫量有显著差异,说明对硫的积累能力强.首钢邻山的植物中,臭椿等5种植物叶片的含硫量极显著高于植物园邻山的相应种,推断其在重污染区的吸硫能力较强.植物园邻山的茜草等5种植物叶片的含硫量极显著高于首钢邻山相应种,推断其在轻度污染区的吸硫能力表现更为突出.

Comparisons of leaf sulfur content from trees near steel factory and Botanical Garden of Beijing

Leaves of 17 plant species are collected from hills near steel factory and Botanical Garden of Beijing and the sulfur content of leaves of each species is measured using ICP-AES (Inductive coupling plasma-Atomic emissionspectrometer). Single-classification analysis of variance of leaf sulfur content is processed among different species from each locality and between same species from different localities. The results showed that the leaves of Rubia cordifoliaAmpelopsis aconitifolia var.glabra, Broussonetia papyrifera, Sophora japonica, Robinia pseudoacacia bear high leafsulfur content in both sights markedly higher than other species with strong sulfur-accumulating ability. The leaves ofAilanthus altissima, Ulmus pumila, Broussonetia papyrifera, Sophora japonica, Robinia pseudoacacia from hill near the steel factory have markedly higher sulfur content than those from hill near Botanical Garden, which reckons their stronger sulfur absorbency in the heavily polluted area, While those of five species including Rubia cordifolia, Ampelopsisaconitifolia var. glabra, etc. from hill near Botanical Garden is markedly higher than those from hill near the steel factoryWhich reckons their stronger sulfur absorbency in lightly polluted area.