蜈蚣草和羽衣甘蓝对铊的富集特征

Tl Accumulating Characteristics of Pteris vittata And Brassica oberacevar

铊(Tl)是剧毒的金属元素,易通过食物链的富集和放大危害人类健康。研究表明广东省云浮含铊硫铁矿尾矿周边土壤中铊明显高于研究区土壤铊的背景值。植物修复是控制和修复重金属污染的最佳方法之一。本文采用温室水培实验,研究了铊不同浓度处理下,本土植物蜈蚣草(Pteris vittata)和羽衣甘蓝(Brassica oberacevar)的生长状况以及铊的吸收特征。结果表明,蜈蚣草和羽衣甘蓝对铊有富集和耐受能力,是良好的植物修复材料。

Thallium （T1） was one of the most poisonous metals, which proned to threat human health via food chain enrichment and amplification. Previous reports showed that thallium in soil adjacent to mine tailing of Guangdong Yunfu pyrite was much higher than soil background value in the studide area. Phytoremediation was one of the best method to constrain and remediate heavy metal contamination. Hydroponic experiment was conducted to study the thallium accumulating characteristics of indigenous Pteris vittata and Brassica oberacevar under different T1 treatments. Results showed that both plants had a strong ability to accumulation and tolerant T1 and can be regarded as fine materials used in phytoremedi- ation.