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害.同时,采用王水法消解,用电感耦合等离子体发射光谱仪(ICP-OES)测定尾矿中重金属含量(见表2),经测定,由于选厂所用原料主要矿物有毒砂,铁闪锌矿,闪锌矿,脆硫锑铅矿等,因此,尾矿中的As,Zn,Pb含量比较高,分别达到9990,2840,425 mg/kg,相对于我国土壤背景值,超标系数分别为892,38,16.从样品中重金属总量来看,该尾矿潜在危害很大.此外,还采用BCR连续提取法测试尾......
of the biosurfactant on the removal capacity of Pb. 3.5 Removal of various forms of Pb by biosurfactant at different pH values There are usually diverse forms of Pb in the PCPS. According to BCR 3-state extraction......
Microbidogy, 1983, 45: 1829-1837. [16] RAURET G, LOPEZ-SANCHEZ J F, SAHUQUILLO A, RUBIO R, DAVIDSON C, URE A, QUEVAUVILLER P. Improvement of the BCR three step sequential extraction procedure prior......
the pH ranges of 4–13, which indicated that the Cd and Pb in bauxite residue were mainly associated with the oxides and hydroxides of Fe/Mn/Al, consistent with the BCR analysis and other research [22......
-SANTOS M, RUIZ-ROMERA E. Chemical and physiological metal bioaccessibility assessment in surface bottom sediments from the Deba River urban catchment: Harmonization of PBET, TCLP and BCR sequential......
束后测试固液分相性能,并取溶液测试Cu2+和Zn2+质量浓度,分析聚沉剂添加对浸出液中Cu2+和Zn2+质量浓度的影响.采用BCR法测试浸出渣中铜和锌的存在形态,分析聚沉剂添加对沼渣中残余重金属形态的影响.依据实验数据选择最适合沼渣化学浸出体系固液分离的聚沉剂 . 2.5 测试方法 采用上海雷磁pHS-3C pH计测试沼渣浸出体系pH和ORP;沼液沼渣分离性能采用布氏滤斗真空抽滤法测定;沼渣用......