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采用连续提取法测定了晴隆锑矿区8个植物样As、Sb不同形态的含量,包括浸提液及消解后的含量。结果表明,浸提液As和Sb主要以醋酸提取态FHAc、盐酸提取态FHCl、氯化钠提取态FNaCl、去离子水提取态FW为主,乙醇提取态FE很小;消解后,植物As、Sb各提取态均比浸提液中砷锑含量高,但乙醇提取态(FE)还是较低。其中,8个植物样消解Sb_FNaCl、Sb_FHCl及茶树As_FHCl达1 mg/kg以上。由于酸雨的影响,矿区植物体的重金属可能淋溶到土壤/水体中。因此,利用植物修复矿山及矿区收割的干植物都要注意植物体内重金属再度释放的问题。
Continuous extraction method was used to determine the contents of 8 different plant-like As and Sb forms in Qinglong antimony mining area, including the extract and the content after digestion. The results showed that the As and Sb extracts were mainly FHAc, FHCl, FNaCl and de-ionized water FW, and the ethanol extractable FE was very small. After digestion, the contents of As, The content of Sb in the extract was higher than that in the extract, but the ethanol extractable (FE) was still low. Among them, 8 plant-like samples digested Sb_FNaCl, Sb_FHCl and As_FHCl in tea up to 1 mg / kg. Due to the impact of acid rain, heavy metals in the mining plant may leach into soil / water. Therefore, the use of plant repair mines and mining areas of dry plants should pay attention to the issue of heavy metals in plants released again.