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铅锌矿渣
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  lead-zinc mine tailings
     Six bacterial strains were isolated from lead-zinc mine tailings with the age of about 100 years, and their phylogenetic position was determined by the analysis of partial 16S rRNA gene sequence.
     从堆积时间为80~100 a的铅锌矿渣中分离了6株细菌,通过测定部分16S rRNA基因序列确定了它们的系统发育地位。
短句来源
  lead-zinc tailing
     Absorption of Heavy Metals by Microorganisms Isolated from Lead-zinc Tailing
     从铅锌矿渣中分离的微生物对重金属吸附特性的研究
短句来源
     High absorption ability of lead, zinc and copper by 7 strains of bacteria and 9 strains of fungi isolated from lead-zinc tailing was characterized.
     从铅锌矿渣中分离到 16种菌 (包括 7株细菌和 9株真菌 ) ,并研究了它们对Zn2 + ,Pb2 + ,Cu2 + 的吸附特性。
短句来源
  “铅锌矿渣”译为未确定词的双语例句
     Evolutionary Ecological Responses in Heavy-metal-tolerant Bacteria Isolated from Lead-zinc Tailings
     铅锌矿渣中重金属耐受细菌的进化生态特征研究
短句来源
     Effects of Moisture and Oxygen on the Survivals of Heavy Metal Tolerant Bacteria from the Tailings of Lead and Zinc Mines
     水分和氧气对铅锌矿渣中重金属耐受细菌活性的影响
短句来源
     Resistant Features of Heavy Metals and Antibiotics in Bacteria from Mine Tailings with DifferentDeposited History
     不同年代铅锌矿渣中细菌的重金属和抗生素抗性特征
短句来源
     The method has been applied to the determintion of Ge in lead-zinc ores with satisfactory results.
     方法操作简单,显色快且稳定,用于铅锌矿渣中锗的测定,结果满意。
短句来源
     This method has been applied to the determination of Ge (Ⅳ) in ore and slag without any separation with satisfactory results.
     该法不经任何分离直接应用于矿石、铅锌矿渣中微量锗的测定,获得满意的结果。
短句来源
更多       
  相似匹配句对
     LEAD
    
短句来源
     ZINC
    
短句来源
     Evolutionary Ecological Responses in Heavy-metal-tolerant Bacteria Isolated from Lead-zinc Tailings
     矿渣中重金属耐受细菌的进化生态特征研究
短句来源
     Resistant Features of Heavy Metals and Antibiotics in Bacteria from Mine Tailings with DifferentDeposited History
     不同年代矿渣中细菌的重金属和抗生素抗性特征
短句来源
     Absorption of Heavy Metals by Microorganisms Isolated from Lead-zinc Tailing
     从矿渣中分离的微生物对重金属吸附特性的研究
短句来源
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  lead-zinc mine tailings
Acid-forming capacity of lead-zinc mine tailings and its implications for mine rehabilitation
      
Lead-zinc mine tailings from the 'old lead-belt' in Missouri were chemically characterized using total chemical analysis and sequential extraction.
      
Lead-zinc mine tailings can represent a source of toxic elements-Pb and Zn through mobilization into surface water, and then into downstream rivers.
      


A highy sensitive method for the spectrophotometric determination of germaniun with DDMBA and phenyl fluorone has been descrided. It is shown that in chloroacetic acid medium. germanium can form a red complex with phenyl fluorone、the ratio of germaniun to phenyl fluorone has been found to be 1: 2. The maximum absorption of the complex occurs at 530nm、and the apparent molar absorptivity is 1.45×10~5L·mol~(-1). Cm~(-1). Beer's Law is obeyed in the range o to 5ug/25ml for Ge. The method has been applied to the...

A highy sensitive method for the spectrophotometric determination of germaniun with DDMBA and phenyl fluorone has been descrided. It is shown that in chloroacetic acid medium. germanium can form a red complex with phenyl fluorone、the ratio of germaniun to phenyl fluorone has been found to be 1: 2. The maximum absorption of the complex occurs at 530nm、and the apparent molar absorptivity is 1.45×10~5L·mol~(-1). Cm~(-1). Beer's Law is obeyed in the range o to 5ug/25ml for Ge. The method has been applied to the determintion of Ge in lead-zinc ores with satisfactory results.

本文介绍在氯乙酸存在下,Ge—DDMBA—PF形成红色配合物测定锗的方法。配合物的组成为Ge:PF=1:2,最大吸收λ=530nm,摩尔吸光系数ε=1.45×10~51·mol~(-1)·cm~(-1);锗含量在0~5ug/25ml符合比尔定律。方法操作简单,显色快且稳定,用于铅锌矿渣中锗的测定,结果满意。

This paper described a highy sensitive Chromogenic reaction of Ge (Ⅳ) with vanillic fluorone (VF) in the presence of DDMBA and hydrochloric acid medium (0.64~0.80mol/L HCl).The molar ratio of Ge (Ⅳ) to VF in the complex with the maximum absorption at 500nm is 1:4 and its molar absorptivity is 1.48×10~5L·mol~(-1)·cm~(-1).Beer's law is obeyed in the range of 0~8ug/25ml for germanium.This method has been applied to the determination of Ge (Ⅳ) in ore and slag without any separation with satisfactory results.

在表面活性剂DDMBA 存在下,0.64~0.80mol/LHCl 介质中,Ge(Ⅳ)与香草基荧光酮(VF)形成橙黄色配合物。其λ_(max)为500nm,显色反应具有很高的灵敏度和选择性,表观摩尔吸光系数ε为1.48×10~5 L·mol~(-1)·cm~(-1)。Ge 含量在0~8ug/2Sml 符合比尔定律。该法不经任何分离直接应用于矿石、铅锌矿渣中微量锗的测定,获得满意的结果。

Losses of several heavy metals at dep ths of 10,30and 60cm in a lead -zinc ta ilings deposited about 10,20and 100years,respectively,were evaluate d.Due to raining -water and acidific ation,in case of the tailings deposited about 100years(100-year tailing),the largest loss of the metals(575.51mg ·kg -1 at 10centimeter to 5144.57mg ·kg -1 at 60centimeter)and the highest soluble metals(453.48mg ·kg -1 at 60centimeter)were observed.In contrast,the tota l heavy metals of surface of 20-year and 10-year...

Losses of several heavy metals at dep ths of 10,30and 60cm in a lead -zinc ta ilings deposited about 10,20and 100years,respectively,were evaluate d.Due to raining -water and acidific ation,in case of the tailings deposited about 100years(100-year tailing),the largest loss of the metals(575.51mg ·kg -1 at 10centimeter to 5144.57mg ·kg -1 at 60centimeter)and the highest soluble metals(453.48mg ·kg -1 at 60centimeter)were observed.In contrast,the tota l heavy metals of surface of 20-year and 10-year tailings have been l ost lightly;while the soluble metals were also low,withthe highestvalu e of197.1mg ·kg -1 and50.11mg ·kg -1 ,respectively.In younger tailings,the soluble metals of surface were higher than that of the deeper layers,but it was opposite in the 100-year tailing,fr om 10,30,to 60cm depth,the soluble metals increased.

分别调查了堆积时间在10、20和近100a的铅锌矿渣堆,埋深在10、30、60cm的重金属含量变化情况。结果表明,由于雨水的淋溶作用和酸化,矿渣堆表层的重金属随堆积时间延长而减少,在100a的矿渣堆中,表层的铅含量仅有575.51mg·kg-1,但下层含量却达到5144.57mg·kg-1。在这些矿渣堆中,可溶性铅的含量也较高,最高达到了453.48mg·kg-1,而堆积20a和10a的矿渣中表层的重金属含量减少的程度较小,可溶性铅含量也相对小,最高含量分别为197.1mg·kg-1和50.11mg·kg-1。在堆积初期,表层的可溶态重金属含量较高,随时间的推移,下层含量逐渐增加,在某一个历史时期超过上层。

 
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