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| 1 | Combined Pollution and Pollution Index of Heavy Metals in Red Soil显示文摘A field experiment was conducted to study the effects of Pb, Cd, Cu, Zn and As coexisting in red soilon growth of rice (Oryza sativa L.), mung bean (Vigna rabiata (Linn.) Wilczek), alfalfa (Medicago sativaL.), slash pine (Pinus elliottii Engelm.) and aspen (Populus L.). Results showed that rice, mung bean andalfalfa were significantly innuenced by combined pollution of the heavy metals. The contents of Pb, cd andAs in rice grains greatly exceeded the National Standards for Food Hygiene of China. Heavy metals at ahigh concentration seriously retarded growth of mung bean and alfalfa, but not so obviously with slash pineand aspen. The composite index is suggested for evaluating the relativity of combined pollution witll heavymetals in soil. | CHEN HUAIMAN ZHENG CHUNRONG WANG SHENQIANG and TU CONG(Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Naroing 210008 China) | 2000 | Pedosphere2000，10，2： | 56 |
| 2 | Fractionation of Heavy Metals in Soils as Affected by Soil Types and Metal Load Quantity显示文摘Two series of soil subsamples, by spiking copper(Cu),lead(Pb),zinc(Zn)and cadmium(Cd)in an orthogonal design,were prepared using red soil and brown soil,respectively.The results indicated that heavy metal fractions in these soil subsamples depended not only on soil types,but also on metal loading quantity as well as on interactions among metals in soil.Lead and Cu in red soil appeared mostly in weakly specifically adsorbed(WSA),Fe and Mn oxides bound(OX),and residual(RES)fractions.Zine cxisted in all fractions except organic bound one,and Cd was major in water soluble plus exchangeable(SE)one.Different from the results of red soil,Pb and Cu was present in brown soil in all fractions except organic one,but over 75% of Zn and 90% of Cd existed only in SE fraction.Meanwhile,SE fraction for any metal in red soil was lower than that in brown soil and WSA and OX fractions were higher.It is in agreernent with low cation exchange capacity and large amounts of metal oxides included in red soil.Metal fractions in soil,especially for water soluble plus exchangeable one ,were obviously influenced by other coexisting metals.The SE fraction of heavy metals increased with increasing loading amounts of metals in red soil but not obviously in brown soil,which suggest that metal availability be easily affected by their total amounts spiked in red soil.In addition,more metals in red soil were extracted with 0.20 mol L^-1 NH4Cl(pH5.40)than that with 1.0 mol L^-1 Mg(NO3)2(pH7.0),but the reverse happened in brown soil,implicating significantly different mechanisms of metal desorption from red soil and brown soil. | ZHOU DONGMEI, CHEN HUAIMAN, HAO XIUZHEN and WANG YUJUNInstitute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 (China) | 2002 | Pedosphere2002，12，4： | 33 |
| 3 | Effect of Combined Heavy Metal Pollution on Nitrogen Mineralization Potential,Urease and Phosphatase Activities in a Typic Udic Ferrisol显示文摘INTRODUCTIONAnthropogenicactivitiessuchasmining,smelting,electroplating,ore-refiningandlanddisposalofwasteshaveledtoanincreajseofheavymetalcolltelltsinthesoil(Chen,1996).Heavymetalaccumulationinthesoilimpactsanumberofsoilpropertiesthatmightbethepoten... | ZHENG CHUNRONG TU CONG and CHEN HUAIMAN(Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, the Chinese Academy of Sciences,Nanjing 210008 (China))(Received April 20, 1999 revised June 2, 1999) | 1999 | Pedosphere1999，9，3： | 13 |
| 4 | Effect of Cr(Ⅵ) and p-Chloroaniline Interaction on Their Reaction Behaviors on Soil Colloids显示文摘INTRODUCTIONStudiesonheavymetalororganicpollutantsinsoilhaverecedelymadegreatprogressboththeoreticallyandpractically.However,pollutionisusuallydevelopedbynotasinglebutamulti-substratecomplex.Furtherunderstandingthemechanismsandprocedureofmulti-substr... | ZHOU DONGMEI and CHEN HUAIMAN(Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, the Chinese Academy of Sciences,Nanjing 21O008 (China))(Received April 14, 1999 revised June 8, 1999) | 1999 | Pedosphere1999，9，3： | 8 |
| 5 | Effect of Heavy Metals on Phosphorus Retention by Typic Udic Ferrisols: Equilibrium and Kinetics显示文摘A study was conducted to examine the effect of heavy metals (Cu, Pb, Zn and Cd in combination or alone) on the equilibrium and kinetics of phosphorus (P) retention in typic udic ferrisols by using both equilibrium and flow techniques. Fourteen soil samples with varying artificial contamination of Cu, Pb, Zn and Cd were prepared. Heavy metal pollution led to increases in retention capacity and maximum buffering capacity (MBC) of soil P. The rate of P retention was also increased and the time to reach equilibrium was advanced by heavy metals addition. The Elovich equation provided a satisfactory description of the P kinetic data. The influence of heavy metals on P retention was in the order of Pb>Cu>Zn, with greater effect in multiple metal pollution. These findings suggested that heavy metal pollution caused an increase in P fixation and thus a decline in P availability. Therefore, indirect influences of heavy metal contamination on soil nutrients may need more consideration when determining overall impact of heavy metals on soil environment. | TU CONG, ZHENG CHUNRONG and CHEN HUAIMAN LMCP, Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008 (China) | 2002 | Pedosphere2002，12，1： | 4 |
| 6 | Photostabilization of the herbicide bensulfuron-methyl by using organoclays显示文摘 | Youbin Si Jing Zhou Huaiman Chen Dongmei Zhou | 2003 | Chemosphere2003，，7： | 1 |
| 7 | Effect of applying chemical fertilizers on forms of lead and cadmium in red soil显示文摘 | TU Cong ZHENG Chunrong CHEN Huaiman | 2000 | Chemosphere2000，41，12： | 1 |
| 8 | Precursor engineering enables high-performance all-inorganic CsPbIBr_(2) perovskite solar cells with a record efficiency approaching 13%显示文摘All-inorganic CsPbIBr_(2) perovskite has attracted widespread attention in photovoltaic and other optoelectronic devices because of its superior thermal stability.However,the deposition of high-quality solutionprocessed CsPbIBr_(2) perovskite films with large thicknesses remains challenging.Here,we develop a triple-component precursor(TCP) by employing lead bromide,lead iodide,and cesium bromide,to replace the most commonly used double-component precursor(DCP) consisting of lead bromide and cesium iodide.Remarkably,the TCP system significantly increases the solution concentration to 1.3 M,leading to a larger film thickness(~390 nm) and enhanced light absorption.The resultant CsPbIBr_(2) films were evaluated in planar n-i-p structured solar cells,which exhibit a considerably higher optimal photocurrent density of 11.50 mA cm^(-2) in comparison to that of DCP-based devices(10.69 mA cm^(-2)).By adopting an organic surface passivator,the maximum device efficiency using TCP is further boosted to a record efficiency of 12.8% for CsPbIBr_(2) perovskite solar cells. | Qingyan Chang Yidan An Huaiman Cao Yuzhen Pan Liangyu Zhao Yulong Chen Yi We Sai-Wing Tsang Hin-Lap Yip Licheng Sun Ze Yu | 2024 | Journal of Energy Chemistry2024，90，3： | 0 |
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