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A series of novel granular chitosang-poly(acrylic acid)/attapulgite/sodium humate (CTSg-PAA/APT/SH) composite hydrogels were successfully prepared by one-step free radical graft polymerization and app...
Adsorption of Pb(II) on composite filter material mainly made of fly ash was investigated for the removal of Pb(II) from aqueous solution. Batch experiments have been carried out for adsorption of Pb(...
用3-巯丙基三甲氧基硅烷(MPTMS)对13X分子筛表面进行修饰,采用XRD和FT-IR测试方法对功能化前后的分子筛结构进行表征,结果表明,功能化后分子筛在保持原有结构同时表面还接枝了对 Pb2+离子有吸附能力的巯基基团。吸附实验表明,巯基功能化分子筛对水中Pb2+离子比原分子筛具有更强的吸附去除效果,饱和吸附容量和去除率提高近一倍。SH-13X对Pb2+离子的等温吸附符合Langmuir模型,最...
A series of novel granular chitosang-poly(acrylic acid)/attapulgite/sodium humate (CTSg-PAA/APT/SH) composite hydrogels were successfully prepared by one-step free radical graft polymerization and app...
滇西腾冲-梁和地区分布大量的花岗岩,对其中的二云母花岗岩进行了LA-ICP-MS锆石U-Pb定年、锆石Hf同位素组成和地球化学的测定。结果表明,岩石属于强过铝质花岗岩,A/CNK=1.11~1.20,K2O/Na2O为1.87~2.20。岩石富Rb、Th和U等元素,Eu/Eu*=0.25~0.47,(La/Yb)N =6.53~34.06。锆石LA-ICP-MS U-Pb同位素测年结果表明:二云母...
对蒙脱石进行化学改性后生成的硫代蒙脱石热稳定性好,并且对金属离子Pb^2 、Hg^2 有很好的吸附性能,是一种处理污水中有害金属离子有效的矿物材料。
Synthetic nagyagite was grown from a melt as part of a search for materials with high-tempera- ture superconductivity. Electron microprobe analyses of synthetic nagyagite and of nagyagite from the t...
Abstract: Solid phase transformation and metal solubility were monitored after coprecipitation of Cd2+, Cu2+, Pb2+ and Zn2+ with Fe3+ to form ferrihydrite by titration to pH 6. The (co)precipitates we...
New values are reported for the Gibbs energies of formation from the elements for hydrocerussite Pb(OH)2·(PbCO3)2 and hydrozincite [Zn(OH)2]3·(ZnCO3)2. These D values 0 G f were obtained from electroc...
A combination of atomic force microscopy, scanning election microscopy, transmission electron microscopy, energy dispersive spectroscopy, electron diffraction, and X-ray dif-fraction were used to stud...
Dessauite,anewmineralinthecrichtonitegroup,occurswithincavitiesincalciteveinsastabular{001}rhombohedral,black,millimeter-sizedcrystalsatBucadellaVenaMine, ApuanAlps(Tuscany,Italy).Itisassociatedwithd...
Abstract: The thermodynamic cationic exchange process involving divalent (Cu, Zn, Cd, Hg, Pb and Ca) and monovalent (Na) cations in Brazilian red Latosol soil was studied. Using a batchwise method, th...

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