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STUDY　OF　THE　INFLUENCE　OF　HUMIC　SUBSTANCES　ON　THE　SORPTION　OF　RARE　EARTH　ELEMENTS　AT　THE　KAOLINITE　AND　BENTONITE　SURFACES

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Chinese Journal of Reactive Polymers 1994年第1期3卷 15-20页

作者： DU Jinzhou YANG Yongping ZHANG Huizhong WANG Jingrong TAO Zuyi (department of modern physics, lanzhou university, lanzhou 730001, China)

The isotherms for sorption of fulvic acid from weathered coal, and the distribulion ratios, Rd, of 169Yb at various concentration of fulvic acid on Na--bentonite and Na--Kaolinite have been measured. Meantime, the dependences of Rd of 169Yb on pH values at a constant initial concentralion of FA were obtained. It was not found that the parallel relationship between the high affinity of humic substance to the clay and the high uptake of metal which has strong ability to complex with this humic substance.

关键词：腐殖质吸附作用稀土元素高岭石表面膨润土表面

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Acid　Dissociation　Constants　of　Functional　Groups　in　Humic　Substances：***　Spectrum　Model　Analysis　of　Potentiometric　Data　of　Fulvic　and　Humic　Acids　Solutions　from　Weathered　Coal　and　Dark　Loessial　Soil

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Pedosphere 1996年第3期 201-208页

作者： DU JIN-ZHOUI CHANG ZHENG ZHANG ZI-PING TAO ZU-YI and LU CHANGQING (department of modern physics, lanzhou university, lanzhou 730000 China) (Institute of Soil Science, Academia Sinica, P.O.Box 821, Nanjing 210008 China)

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关键词： affinity spectrum heterogeneity humic substances potentiometric titration

Study on Lithium Isotope Enrichment by Band Displacement Process

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Chemical Research in Chinese Universities 1985年第1期 93-100页

作者： Ling Daren,Zheng Zuying,Yue Tingsheng,Xu Huiqun,Yang Kunshan and wang Yani(department of modern physics,lanzhou university,lanzhou)Lu Xianyao (The Beijing Fifth Institute,Beijing)

Based on the equilibrium plate model of the distillation type,a set of theoretical equations has been deduced for the isotope’s stationary band,and a new method of calculating the height equivalent to a theoretical plate (HETP) used for isotope enrichment was ***,the quantitative relations between the total enrichment and the experimental parameters (concentration of eluant,flow rate,length of band and displaced distance) were *** expression of enrichment variation,while approaching the stationary state,was corrected and demonstrated *** the use of that expression,the semicontinuous isotope enrichment process was successfully estimated

关键词： Study on Lithium Isotope Enrichment by Band Displacement Process length

Cross Section Measurements for 199Hg(n,p)199Au,198Hg(n,p)198Au,196Hg(n,p)196Au and 196Hg(n,d+np+pn)195Au Reactions

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