%0 Journal Article
%T Immobilization of Pb and Cd in a lead smelting polluted soil with different amendments<br>不同添加剂对铅冶炼污染土壤中铅、镉稳定效果的研究
%A LI Liping
%A XING Weiqin
%A XIANG Guoqiang
%A YANG Liangru
%A ZHANG Hao
%A ZHANG Jinglun
%A <br>李立平
%A 邢维芹
%A 向国强
%A 杨亮茹
%A 张浩
%A 张经纶
%J 环境科学学报
%D 2012
%I 
%X To assess the effect of different additives on the immobilization of Pb and Cd in polluted soils, a lead smelting polluted calcareous soil, containing enhanced Pb (2337 mg·kg-1) and Cd (21.4 mg·kg-1), was treated by additions of potassium dihydrogen phosphate (PDP), calcium dihydrogen phosphate (CDP), lime, hydrochloric acid and phosphoric acid, respectively. The treated soils were then tested in pot experiment of ryegrass (Lolium perenne L. cv. Rainbow) and the effects were evaluated by analyzing the availability of Pb, Cd and P in the soils and the properties of ryegrass after harvest. The results were summarized as following. Addition of lime decreased the DTPA-Cd content while did not affect the DTPA-Pb content significantly (p>0.05). Hydrochloric acid addition increased DTPA-Cd content (p<0.05) while did not affect the content of DTPA-Pb. Compared with the control, addition of PDP, PDP combined with hydrochloric acid, CDP and phosphoric acid decreased the contents of both DTPA-Pb (39.5%~47.8%) and DTPA-Cd (10.5%~19.4%) significantly (p<0.05). Moreover, compared with PDP, addition of PDP combined with hydrochloric acid decreased the DTPA-Pb content by 12.6% (p<0.05), and the pH and Olsen-P content were lower when PDP was combined with hydrochloric acid. Plant yields with lime and hydrochloric acid treatments were only slightly higher than that of the control, while the yields of other treatments were 100% to 140% higher than that of the control. Treatment with hydrochloric acid improved the shoot Cd content significantly, and all the treatments decreased the shoot Pb contents significantly (p<0.05).
%K lead smelting
%K pollution
%K soil
%K immobilization
%K hydrochloric acid<br>铅冶炼
%K 污染
%K 土壤
%K 稳定
%K 盐酸
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=2C5AC4805BBB5B0E9324DAEDDD3FB81D&yid=99E9153A83D4CB11&vid=9971A5E270697F23&iid=DF92D298D3FF1E6E&sid=959B2AB984B945BD&eid=A84A3AD26CE1D4D2&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=41