王晓蓉
环境化学科学研究
个性化签名
- 姓名:王晓蓉
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
有机化学
- 研究兴趣:环境化学科学研究
王晓蓉,女,南京大学教授,博士生导师。1962毕业于南京大学化学系,曾作为访问学者于1985-1986年期间和1996年先后赴澳大利亚University of Melburne和美国Michigan State University开展合作研究。现为 “污染控制与资源化研究国家重点实验室”副主任,主持南京大学方面的工作。2000年~2004年曾为国家自然科学基金化学科学部专家评议组成员,中国地理学会化学地理与环境地理专业委员会委员,中国环境科学学会水环境分会理事、太湖湖泊生态系统研究分会学术委员会委员,南京大学学术委员会委员,《化学进展》编委,国家环保总局第一届“环境使者”。享受国务院特殊津贴。
长期从事环境化学科学研究。先后主持和参加十多项国家科技重点攻关项目、国家自然科学基金重大和面上项目。在水环境背景制值研究、元素存在形态和生物可利用性、污染物的环境化学行为和生态效应以及污染土壤和地下水的化学与生物修复方面进行了长期系统的研究,曾为国家基金委化学部自然科学学科发展战略研究报告“环境化学”撰写有关研究报告。负责和主要参加获奖的项目有10项,获得国家科技进步三等奖2项,中国科学院科技进步一等奖1项,教育部科技进步一等奖和二等奖各1项,省部级科技进步三等奖5项。出版著作2 部,参编著作7部,发表论文130多篇(其中SCI收录38篇)。
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292
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成果数
10
王晓蓉, Cao Xinde a, *, Wang Xiaorong a, Zhao Guiwen b
Chemosphere 40(2000)23-28,-0001,():
-1年11月30日
The bioavailability of rare earth elements (REEs) in soils was evaluated, based on the combination of chemicalfractionation and multiple regression analysis. REEs in soils were partitioned by a sequential extraction procedure intowater soluble (F(ws)), exchangeable (F(ec)), bound to carbonates (F(cb)), bound to organic matter (F(om)), bound toFe
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王晓蓉, Zhimang Gu a, Xiaorong Wang a, *, Xueyuan Gu a, Jing Cheng a, Liansheng Wang a, Lemei Dai b, Mi Cao b
Talanta 53(2001)1163-1170,-0001,():
-1年11月30日
Fulvic acids (FAs) were extracted by alkali extraction from different soil samples in China, then purified using resins and characterized by Fourier transform infrared spectroscopy. The complexing ability of FAs was investigated by measuring the stability constants of rare earth elements (REEs) (La3+, Ce3+, Sm3+, Gd3+, Y3+) with FAs by the ion exchange technique. The results indicated that maximum binding ability forY3+ (4.41~4.44) was higher than other REEs (La3+, Ce3+, Sm3+, Gd3+) (0.72~1.03). There were two types of binding sites in the functional groups of fulvic acids. The complexing reaction followed two steps. The stability constants (K1 and K2) of REEs with Fas were calculated from experimental data by division of Scatchard plots into two straight-line segments. Y3+ (logK1=5.72±log K2=4.83±0.01) also has higher stability constants than the other four REEs (log K1=4.37±0.16, log K2=3.62±0.28).
Fulvic acids, Rare earth elements, Stability constants, Soil
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【期刊论文】Physiological Responses of Carassius auratus to Ytterbium exposure
王晓蓉, Guo Hongyan, Chen Liang, Wang Xiaorong, and Chen Ying
Ecotoxicology and Environmental Safety 53, 312-316 (2002),-0001,():
-1年11月30日
Physiological and biochemical perturbations in the liver ofCarassius auratus were investigated in vivo following 40 days ofexposure to ytterbium solutions of di4erent concentration.Glutamate8pyruvate transaminase (GPT) activity in gold5shliver was stimulated at 0.05mg/L Yb3+ and inhibited at higherYb3+ concentrations. Activity of the antioxidant enzymesuperoxide dismutase (SOD) was stimulated at Yb3+ higher than 0.05mg/L, and catalase (CAT) activity was strongly inhibitedafter 40 days of exposure. Detoxifying enzymes glutathioneS-transferase (GST) and glutathione peroxidase (GSH-Px) werestimulated at 0.05mg/L and inhibited at 0.1mg/L after 40 daysof exposure. Among the parameters determined, CATin gold5shliver was most sensitive to Yb3+, indicating that CATmightbe considered a potential tool in the biomonitoring of exposureto Yb3+ in an aquatic ecosystem.
physiological responses, biomonitoring, Carassiusauratus, ytterbium exposure.,
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【期刊论文】Effects of redox potential and pH value on the release of rare earth elements from soil
王晓蓉, Xinde Cao a, *, Ying Chen a, Xiaorong Wang a, Xihai Deng b
X. Cuo et al./Cbernosphere 44(2001)655 661,-0001,():
-1年11月30日
Equilibrium release experiments were conducted under three different pH values of 3.5, 5.5 and 7.5 as well as three redox potentials of 400, 0 and -100Mv to investigate the influence of redox potential and pH value on the La, Ce, Gd and Y release of from the simulated-REEs-accumulation (SRA) soil. Oxygen and nitrogen were allowed to flow into soil suspension to adjust redox potential to a preset value, and 1mol/1 HC1 or lmol/1NaOH solutions were added into the soil suspension to keep pH at a preset value. Results indicated that La, Ce, Gd and Y release increased gradually with the decrease of pH value or Eh, and the influence of redox potential on Ce was more remarkable than on La, Gd and Y. At the same time. It was observed that La, Ce, Gd and Y releases were positively correlated with the release of Fe and Mn, indicating that La, Ce, Gd and Y releases might originate from dissolution of Fe-Mn oxyhydroxides under reduction and low pH conditions. Moreover, it was found that alteration of pH value and redox potential might affect the change of La, Ce, Gd and Y species in the soil. The contents of La, Ce, Gd and Y in exchangeable fraction and Fe-Mn oxide fraction in the solid phase from soil suspension separation decreased with the decline of pH value and redox potential. Multiple stepwise regression analysis showed that exchangeable fraction and Fe-Mn oxide fraction pre-dominately contributed to the La, Ce, Gd and Y release. Low pH value and redox potential were more favorable to La, Ce, Gd and Y releases following the change of their species. The La, Ce, Gd and Y contents in exchangeable fraction and Fe-Mn oxide fraction are the main contributors to their release.
Redox potential, pH value, Rare earth elements, Soil, Release
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【期刊论文】Study on the kinetics of cerium(III) adsorption-desorption on different soils of China
王晓蓉
,-0001,():
-1年11月30日
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王晓蓉, Gu Zhimang a, Wang Xiaorong a, Gu Xueyuan a, Cheng Jing a, Wang Liansheng a, Dai Lemei b, Chen Yijun a
G. Zhimang et al./Chemosphere 44(2001)545 551,-0001,():
-1年11月30日
Fulvic acid (FA) was extracted and purified from natural soil and the effects of such FA on the bioaccumulation of rare earth elements (REEs, La3+, Gd3+ and y3+) in wheat seedling were investigated. The results indicated that low concentration of FA (<0.4mg C/1 to root, <0.7mg C/1 to tops (stem and leaves)) could increase the bioaccumulation values of REEs in wheat, but when the concentration of FA was high (>0.4mg C/1 to root, >1.5mg C/1 to tops) the bioaccumulation values were decreased. Kinetic experimental results suggested that bioaccumulation values of REEs in roots for 30 days were correlated with the kinetic linear growth equation, and correlation coefficients were higher than 0.861. The kinetic bioaccumulation pattern of REEs in tops was different from that in root. The bioaccumulation values of REEs in wheat root were much higher than in wheat tops. Variations of glutamic oxaloacetic transaminase (GOT) enzyme activities in wheat root and tops were determined. A good correlation existed between the bioaccumulation values of REEs and GOT enzyme activities, and the correlation coefficients were higher than 0.922. GOT is an im-portant parameter influencing the bioavailability of REEs.
Rare earth elements, Fulvic acid, Bioaccumulation, Wheat, Glutamic oxaloacetic transaminase, Enzyme activity
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【期刊论文】DISTRIBUTION AND BIOAVAILABILITY OF RARE EARTH ELEMENTS IN AQUATIC MICROCOSM
王晓蓉, Xingye Yang, Daqiang Yin, Hao Sun, Xiaorong Wang, Lemei Dai, Yijun Chen, Mi Cao
Chemosphere, Vol. 39, No.14, pp. 2443-2450, 1999,-0001,():
-1年11月30日
A static laboratory aquatic microcosm was conducted to evaluate the distribution of mixed REEs-rare earth dements (lanthanum, cerium, samarium, gadolinium and yttrium) in natural water bodies. Several kinds of species were used. Duckweed represented phytoplankton, daphnia represented crustacean, shellfish represented benthic species and goldfish represented fishes. Samples from water, sediment and each species were analyzed by ICP-AES to determine their REEs contents. It was found that most REEs was adsorbed by sediment and might be redischarged into water, and the bioconcentration order of REEs in the species is duckweed>daphnia>shellfish>goldfish. The results will be useful to evaluate the environmental impact of the wide use of REEs in China.
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王晓蓉, Sun Hao, Wang Xiaorong*, Hua Zhaozhe, Wu Chonghua, Wang Liansheng, Dai Lemei, Li Zhong, Chen Yijun, Center of Material Analysis
Chemosphere, VoL 33, No.8, pp. 1475-1483, 1996,-0001,():
-1年11月30日
In this paper, Bioconcentration and elimination of five light rare earth elements(REEs) La, Ce, Pr, Nd and Sm were investigated in carp (Cyprinus carpio L.). The results show that internal organs had high ability to bioconcentrate light REEs. The order of BCFs of REEs was mostly internal organs>>gills> skeleton>muscle, there were slight differences among the BCF values of different REEs in a given tissue. In the elimination process, there were two patterns of elimination, the pattern of elimination in gills, skeleton and muscle could be described by two-compartment model and the pattern of elimination in internal organs could be divided into two periods, the second period could be described by one-compartment model. The biological half-lives (Tb) of each REEs in tissues of carp were obtained. The results also indicated that internal organs were considered to be the most important site of light REEs' detoxification and metabolism Copyright.
Cyprinus carpio L., ,, Bioconcentration and elimination,, Light Rare Earth Elements,, Models,, La,, Ce,, Pr,, Nd,, Sin.,
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王晓蓉, Sun Hao, Wang Xiaorong+, Wang Liansheng, Dai Lemei, Li Zhong, Cheng Yijun, Center of Material Analysis
Chemosphere, VoL 34, No.8, pp. 1753-1760, 1997,-0001,():
-1年11月30日
In this paper, the species of Rare Earth Elements (La, Gd and Y) complexed with organic ligands EDTA (ethylenediamine tetraacetic), NTA (nitrilotriacetic acid) and Cit (citrate) were calculated in the test medium by MINTEQA-A program to calculate aqueous geochemical equilibrium. The influence of the species on the bioconcentration (kinetics and thermodynamics) processes of REEs by algae (Chlorella Vulgarize Beijerinck) were also studied. The results show that the bioconcentration processes of REEs by algae were highly dependent on chemical species. Adding organic ligands which can form RE-Organic species complex led to a great reduction of the REEs bioconcentration in algae. The order of BCFs from high to low is RE3+>RE-Cit>RE-NTA>RE-EDTA complex. The potential mechanism ofbioconcentration may be the coordination reactions of REEs ions with the active sites on algae surface followed by the slow diffusion into the algae cell.
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王晓蓉, Sun Hao, Wang Xiaorong, * Wang Qin and Wang Liansheng, Chen Yijun, Dai lemei, Li Zhong and Cao Mi
Chemosphere, Vol. 36, No.2, pp. 329-337, 1998,-0001,():
-1年11月30日
In this investigation, the species of spiked Rare Earth Element La, Gd, Y, Ce and Sm in sediment were def'med as watersoluble, acid extractable and organic/sulphide bound species, the correlation relationship of these species to thebioavailability of algae (Chlorella Vulgaris Beijerinck) were established by linear regression. The results indicated thatthere existed good correlation between the concentrations of REEs in algae and the concentrations of three species insediment, respectively. Among three species in the sediment, the water soluble species had the best correlationrelationship to the bioavailability of algae, this suggested that the release of REEs from the sediment were the most important factor affect the bioavailability of REEs to algae.
Spiked REEs,, Species,, Algae (, Chlorella Vulgaris Beijerinck), ,, Bioavailability
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