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| 1 | Research progress of heavy metal pollution in China:Sources,analytical methods,status,and toxicity显示文摘Heavy metal pollution is one of the most serious environmental problems in China and a large number of people are threatened by heavy metal pollution.Extensive damage to human organs,such as liver,kidney,digestion system,and nervous system can be caused by uptake of excess heavy metals.Heavy metals in the environment can originate from both natural and anthropogenic sources.Although contamination of heavy metals has been known to be a severe environmental problem for decades,it is still getting worse in recent years and there are few feasible approaches to resolve this problem.Due to their high toxicity,prevalent existence and persistence in the environment,lead(Pb),mercury(Hg),cadmium(Cd),chromium(Cr) and arsenic(As) are commonly considered as the priority heavy metals which should be concerned and their emission should be controlled in China.This paper reviewed the pollution of heavy metals in China,focusing on the following four aspects:current status of heavy metal pollution in China,sources of heavy metals in China,toxicity and potential risk,and possible reduction strategies. | HE Bin YUN ZhaoJun SHI JianBo JIANG GuiBin | 2013 | Chinese Science Bulletin2013，58，2： | 114 |
| 2 | Concentrations,profiles and gas-particle partitioning of PCDD/Fs,PCBs and PBDEs in the ambient air of an E-waste dismantling area,southeast China显示文摘Polychlorinated diebenzo-p-dioxins(PCDDs),polychlorinated diebenzofurans(PCDFs),polychlorinated biphenyls(PCBs) and polybrominated diphenyl ethers(PBDEs) were monitored in the ambient air of Taizhou,an E-waste dismantling area of southeast China to evaluate their concentrations,profiles and gas-particle partitioning.The ΣPCDD/Fs concentrations ranged from 2.91 to 50.6 pg/m3,with an average of 14.3 pg/m3.The I-TEQs for PCDD/Fs were in the range of 0.20-3.45 pg/m3,with an average of 1.10 pg/m3.The ΣPCBs concentrations and TEQs ranged from 4.23 to 11.35 ng/m3,0.050 to 0.859 pg(TEQ)/m3,respectively.The concentrations of ΣPBDEs ranged from 92 to 3086 pg/m3,with an average of 894 pg/m3.The pollution levels of PCDD/Fs,PCBs and PBDEs were higher than other urban sites,which may be associated with the E-waste dismantling activities.The PCDD/Fs were found exclusively in the particle phase whereas PCBs distributed dominantly in the gas phase.The gas-partilce partitioning was also assessed by correlating the gas-particle partition coefficient(Kp) with the subcooled liquid vapor pressure(PL0).The measured particulate sorptions of PCDD/Fs,PCBs and PBDEs were compared with the predictions from Junge-Pankow model and Koa absorption model.The Junge-Pankow model well estimated the particulate fractions of PCBs.However,it underestimated the sorptions of PCDD/Fs and overestimated the fractions of PBDEs.The predicted particulate fractions of PCDD/Fs and PCBs from Koa model fitted well with the measured data. | LI YingMing JIANG GuiBin WANG YaWei WANG Pu ZHANG QingHua | 2008 | Chinese Science Bulletin2008，53，4： | 26 |
| 3 | The geological characteristics of oceanic-type UHP metamorphic belts and their tectonic implications: Case studies from Southwest Tianshan and North Qaidam in NW China显示文摘The geological characteristics of ultrahigh-pressure (UHP) metamorphic belts formed by deep subduction of oceanic crust are summarized in this paper. Oceanic-type UHP metamorphic belt is characterized by its protolithic assemblage of typical oceanic crust, the peak metamorphic temperature <600℃, P-T path undergoing blueschist facies during prograde and retrograde metamorphic evolution, respectively, with low geothermal gradient of cold subduction. The further study of oceanic-type UHP metamorphic belt is very significant for constructing metamorphic reaction series of cold subduction zone, for understanding how aqueous fluids were transported into deep mantle and for classifying the types of UHP metamorphism in cold subduction zone. The uplift and exhumation mechanism of oceanic UHP metamorphic rocks is one of the most challenging problems in the study of UHP metamorphism, which is very important for understanding the geodynamic mechanism of solid Earth. As a traveler subducted into the mantle depth and then uplifted to the surface, oceanic-type UHP metamorphic belts witness the bulk process from the subduction to exhumation and is an ideal target to study the geochemical behavior and cycling of elements in subduction zones. The tectonic evolution of one convergent orogenic belt can be usually divided into two stages of oceanic subduction and followed continental subduction and collision, and the two best-established examples of orogenic belts are Alps and Himalaya. Therefore, the study of oceanic-type UHP metamorphic belt is the frontier of the current plate tectonic theory. As two case studies, the current status and existing problems of oceanic-type UHP metamorphic belts in Southwest Tianshan and North Qaidam, NW China, are reviewed in this paper. | ZHANG LiFei LU Zeng ZHANG GuiBin SONG ShuGuang | 2008 | Chinese Science Bulletin2008，53，20： | 22 |
| 4 | Seasonal trend of ambient PCDD/Fs in Tianjin City, northern China using active sampling strategy显示文摘The spatial concentrations, seasonal trends, profiles and congener pairs of ambient polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were investigated within a seasonally active sampling scheme during Jun 2008 and Jan 2009 in Tianjin City, northern China. The PCDD/F concentrations ranged 14.2-172 fg I-TEQ/m3 (average 69.3 fg I-TEQ/m3 ) in summer and (89.8-1.01)×103 fg I-TEQ/m3 (average 509 fg I-TEQ/m3 ) in winter, respectively, except for the E-waste dismantling site where much higher values were observed (1.04×103 fg I-TEQ/m3 in summer and 7.123×103 fg I-TEQ/m3 in winter). The results indicated a significantly seasonal trend with higher TEQ values in winter as compared with summer, which could be related to increased emission sources and seasonal variations of the atmospheric boundary layer height. 2,3,4,7,8-PeCDF was the dominant contributor to the total PCDD/F toxic equivalents, and 2,3,7,8-TCDD was detected at almost all the sampling sites in winter. Most of the similarly substituted PCDD/F congener pairs exhibited high correlations, suggesting that they might have similar environmental fate or sources. But different seasonal and spatial distributions of PCDD/F concentrations indicated that the emission sources might be intermittent. | Lei Ding Yingming Li Pu Wang Xiaomin Li Zongshan Zhao Qinghua Zhang Ting Tuan Guibin Jiang | 2012 | Journal of Environmental Sciences2012，24，11： | 16 |
| 5 | The TH Express high performance interconnect networks显示文摘 | Zhengbin PANG Min XIE Jun ZHANG Yi ZHENG Guibin WANG Dezun DONG Guang SUO | 2014 | Frontiers of Computer Science2014，8，3： | 15 |
| 6 | A competitive dual-label time-resolved fluoroimmunoassay for the simultaneous determination of chloramphenicol and ractopamine in swine tissue显示文摘A novel dual-label time-resolved fluoroimmunoassay method was developed for the simultaneous determination of chloramphenicol (CAP) and ractopamine (RAC) residues in 18 swine tissue samples,using anti-CAP and anti-RAC monoclonal antibodies labeled with europium (Eu 3+) and samarium (Sm 3+),respectively.The detection limits for CAP and RAC were 0.06 and 0.25ng/g.The recovery from swine muscle samples was 102%-121% for CAP at spiking levels of 0.1-5ng/g,and 69.8%-85.8% for RAC at spiking levels of 1-10ng/g.The results obtained from the swine tissue samples using this method showed good agreement with those obtained using ELISA and GC-MS,with correlation coefficients (R) between 0.92-0.98. | ZHANG Zhen LIU JingFu YAO Yan JIANG GuiBin | 2011 | Chinese Science Bulletin2011，56，15： | 13 |
| 7 | Occurrence and distribution of hexabromocyclododecane in sediments from seven major river drainage basins in China显示文摘The concentrations and geographical distribution of hexabromocyclododecane (HBCD) were investigated in 37 composite surface sediments from seven major river drainage basins in China, including Yangtze River, Yellow River, Pearl River, Liaohe River, Haihe River, Tarim River and Ertix River. The detection frequency of HBCD was 54%, with the concentrations ranged from below limit of detection (LOD) to 206 ng/g dry weight. In general, the geographical distribution showed increasing trends from the upper reaches to the lower reaches of the rivers and from North China to Southeast China. Compared to other regions in the world, the average concentration of HBCD in sediments from Yangtze River drainage basin was at relatively high level, whereas those from other six river drainage basins were at lower or similar level. The highest HBCD concentration in sediment from Yangtze River Delta and the highest detection frequency of HBCD in Pearl River drainage basins suggested that the industrial and urban activities could evidently affect the HBCD distribution. HBCD diastereoisomer profiles showed that γ-HBCD dominated in most of the sediment samples, followed by α- and β-HBCD, which was consistent with those in the commercial HBCD mixtures. Further risk assessment reflected that the average inventories of HBCD were 18.3, 5.87, 3.92, 2.50, 1.77 ng/cm 2 in sediments from Pearl River, Haihe River, Tarim River, Yellow River and Yangtze River, respectively. | Honghua Li Hongtao Shang Pu Wang Yawei Wang Haidong Zhang Qinghua Zhang Guibin Jiang | 2013 | Journal of Environmental Sciences2013，25，1： | 11 |
| 8 | Concentrations and source identification of organochlorine pesticides (OCPs) in soils from Wolong Natural Reserve显示文摘In order to understand the distribution profile, composition characteristics and sources of OCPs, soil samples collected from Wolong Natural Reserve (WNR) in spring and autumn in 2005 were analyzed using gas chromatography coupled with electron capture detector (GC-ECD). Results showed that all OCPs concentrations were in the range of 10?2 ng/g―10?1 ng/g, representing the background level in those remote sites. Generally, their concentrations were slightly higher in spring than in autumn, which could be explained by OCPs: 1) may be released to soil from snow-melting water in spring; 2) partially evaporate into air from soil due to high temperature and intense radiation in summer and 3) can be relatively high degradation rate in summer. There were notable differences of OCPs seasonal variations between samples from alpine meadow and those from under-treeline. This phenomenon was related to physical-chemical properties of OCPs and vegetation coverage. For alpine meadow soils, levels of OCPs were increased with increasing altitudinal gradient, which was associated with enhanced scav-enging efficiency of wet precipitation. Composition characteristics of OCPs in soils were similar to those of air samples, which was distinct from those of typical contaminated soils, indicating that OCPs in WNR soils were mainly from atmospheric transport. | ZHENG XiaoYan LIU XianDe LIU WenJie JIANG GuiBin YANG RuiQiang | 2009 | Chinese Science Bulletin2009，54，5： | 11 |
| 9 | Water chemistry controlled aggregation and photo-transformation of silver nanoparticles in environmental waters显示文摘The inevitable release of engineered silver nanoparticles(Ag NPs) into aquatic environments has drawn great concerns about its environmental toxicity and safety. Although aggregation and transformation play crucial roles in the transport and toxicity of Ag NPs, how the water chemistry of environmental waters influences the aggregation and transformation of engineered Ag NPs is still not well understood. In this study, the aggregation of polyvinylpyrrolidone(PVP) coated Ag NPs was investigated in eight typical environmental water samples(with different ionic strengths, hardness, and dissolved organic matter(DOM) concentrations) by using UV–visible spectroscopy and dynamic light scattering. Raman spectroscopy was applied to probe the interaction of DOM with the surface of Ag NPs. Further, the photo-transformation and morphology changes of Ag NPs in environmental waters were studied by UV–visible spectroscopy, inductively coupled plasma mass spectrometry, and transmission electron microscopy. The results suggested that both electrolytes(especially Ca2+and Mg2+) and DOM in the surface waters are key parameters for Ag NP aggregation, and sunlight could accelerate the morphology change, aggregation, and further sedimentation of Ag NPs. This water chemistry controlled aggregation and photo-transformation should have significant environmental impacts on the transport and toxicity of Ag NPs in the aquatic environments. | Yongguang Yin Xiaoya Yang Xiaoxia Zhou Weidong Wang Sujuan Yu Jingfu Liu Guibin Jiang | 2015 | Journal of Environmental Sciences2015，27，8： | 9 |
| 10 | Recent advances in speciation analysis of mercury,arsenic and selenium显示文摘Mercury(Hg),arsenic(As) and selenium(Se) are ubiquitous in the environment and exist in a variety of species,which have great influence on their transport,bioaccumulation and toxicity.This review presents the recent research progress in speciation analysis of Hg,As,and Se,with emphasis on enhanced cold vapor generation as interface for liquid chromatography and atomic spectrometry,speciation of volatile species in gas phase,and isotope dilution technique to improve the precision and accuracy of speciation.Hyphenated techniques to characterize the complexes of Hg and As with phytochelatins and chromatographic separation coupled with multi-collector-inductively coupled plasma mass spectrometry to measure species-specific isotopic ratios,are also briefly discussed. | YIN YongGuang LIU JingFu JIANG GuiBin | 2013 | Chinese Science Bulletin2013，58，2： | 8 |
| 11 | Analyses of nitrobenzene, benzene and aniline in environmental water samples by headspace solid phase micro-extraction coupled with gas chromatography-mass spectrometry显示文摘A headspace solid phase microextrac- tion coupled with gas chromatography mass spec- trometry (HS-SPME/GC-MS) method was estab- lished for analyzing nitrobenzene, benzene and ani- line in environmental water samples simultaneously. Factors affecting extraction efficiency (SPME fiber selection, acidity, temperature, salt addition, extrac- tion time, headspace, etc) were verified. Under opti- mal extraction conditions, the detection limits are 0.50, 0.11 and 1.00 μg/L for nitrobenzene, benzene and aniline, respectively. The results indicate that this method is capable of making sensitive and accuracy analyses on nitrobenzene, benzene and aniline in environmental water samples. | CHEN Ming YIN Yongguang TAI Chao ZHANG Qinghua LIU Jiyan HU Jingtian JIANG Guibin | 2006 | Chinese Science Bulletin2006，51，13： | 8 |
| 12 | The ex vivo and in vivo biological performances of graphene oxide and the impact of surfactant on graphene oxide's biocompatibility显示文摘Graphene oxide(GO)displays promising properties for biomedical applications including drug delivery and cancer therapeutics.However,GO exposure also raises safety concerns such as potential side effects on health.Here,the biological effects of GO suspended in phosphate buffered saline(PBS)with or without 1% nonionic surfactant Tween 80 were investigated.Based on the ex vivo experiments,Tween 80 significantly affected the interaction between GO and peripheral blood from mice.GO suspension in PBS tended to provoke the aggregation of diluted blood cells,which could be prevented by the addition of Tween 80.After intravenous administration,GO suspension with or without 1% Tween 80 was quickly eliminated by the mononuclear phagocyte system.Nevertheless,GO suspension without Tween 80 showed greater accumulation in lungs than that containing 1% Tween 80.In contrast,less GO was found in livers for GO suspension compared to Tween 80 assisted GO suspension.Organs including hearts,livers,lungs,spleens,kidneys,brains,and testes did not reveal histological alterations.The indexes of peripheral blood showed no change upon GO exposure.Our results together demonstrated that Tween 80 could greatly alter GO's biological performance and determine the pattern of its biodistribution in mice. | Guangbo Qu Xiaoyan Wang Qian Liu Rui Liu Nuoya Yin Juan Ma Liqun Chen Jiuyang He Sijin Liu Guibin Jiang | 2013 | Journal of Environmental Sciences2013，25，5： | 7 |
| 13 | Historical trends of PCBs and PBDEs as reconstructed in a lake sediment from southern Tibetan Plateau显示文摘High-altitude lake sediment can be used as a natural archive to reconstruct the history of pollutants. In this work, the temporal distribution of polychlorinated biphenyls(PCBs) and polybrominated diphenyl ethers(PBDEs) were determined using a high-resolution gas chromatography coupled with high-resolution mass spectrometer(HRGC/HRMS) in an alpine lake sediment core collected from the southern Tibetan Plateau(TP) to examine whether the expected decreasing trends due to the implementation of the international Conventions could be observed. The concentrations of PCBs and PBDEs in the sediment core were in the range of 11.8–142 pg/g dw and ND-457 pg/g dw, and their fluxes were in the range of 2.51–31.7 ng/(m^2 ·yr) and ND-43.2 ng/(m^2 ·yr), respectively. The prevalence of low-chlorinated(tri-CB) PCBs and low-brominated(tri-to tetra-) PBDEs in most sections of the sediment profiles was observed, suggesting that the light molecular weight PCBs and PBDEs have most likely reached lake sediments by long-range atmospheric transport from distant sources. Despite the restrictions on their applications, the sediment records for the concentrations and fluxes showed no corresponding decreasing trend with restrictions for PCBs, which suggested that these POPs(e.g., PCBs) were still emitted to the environment owing to the influence of primary or secondary emissions. To our knowledge, this is the first report on input history of atmospheric PCBs and PBDEs recorded in TP Lake sediment. | Ruiqiang Yang Ting Xie Pu Wang Yingming Li Qinghua Zhang Guibin Jiang | 2020 | Journal of Environmental Sciences2020，32，12： | 7 |
| 14 | Organotin compounds in surface sediments from selected fishing ports along the Chinese coast显示文摘The concentrations and species of organotin compounds(OTCs) in 52 surface sediment samples from nine fishing ports along the Chinese coast were studied.Butyltins(BTs) and phenyltins(PhTs) were derivatized using sodium tetraethylborate(NaBEt 4) and determined by head-space solid-phase microextraction(HS-SPME) gas chromatography coupled with a flame photometric detector(GC-FPD).The concentrations of OTCs ranged from <3.6 to 194 ng(Sn) g-1 dry weight(dw) for monobutyltin(MBT),<2.3 to 41.5 ng(Sn) g-1 dw for dibutyltin(DBT),<0.7 to 86.0 ng(Sn) g-1 dw for tributyltin(TBT) and <5.1 to 66.1 ng(Sn) g-1 dw for monophenyltin(MPhT),respectively.The concentrations of diphenyltin(DPhT) and triphenyltin(TPhT) were below the limit of detection(LOD).BTs were the main species in the sediments except for the samples collected from Shazikou fishing port in Qingdao.The concentrations of MBT were higher than DBT and TBT.The concentrations of OTCs in the sediments varied widely among different sampling locations.The concentrations of BTs were much higher in the samples collected from fishing ports close to the South China Sea than those in coast of the East China Sea and the Yellow Sea.MPhT was prevalent in most sampling stations except for those in coast of the East China Sea.The environmental and ecotoxicological risks of TBT in most sediment samples were low. | ZHANG KeGang SHI JianBo HE Bin XU WeiHai LI XiangDong JIANG GuiBin | 2013 | Chinese Science Bulletin2013，58，2： | 7 |
| 15 | Intranasal administration of tetrabromobisphenol A bis(2-hydroxyethyl ether) induces neurobehavioral changes in neonatal Sprague Dawley rats显示文摘Tetrabromobisphenol A(TBBPA) and its derivatives are now being highly concerned due to their emerging environmental occurrence and deleterious effects on non-target organisms.Considering the potential neurotoxicity of TBBPA derivatives which has been demonstrated in vitro, what could happen in vivo is worthy of being studied. Tetrabromobisphenol A bis(2-hydroxyethyl ether)(TBBPA-BHEE), a representative TBBPA derivative, was selected for a21-day exposure experiment on neonatal Sprague Dawley(SD) rats through intranasal administration. The neurobehavioral, histopathological changes, and differentially expressed genes based on RNA microarray were investigated to evaluate the neurological effects of this chemical. The results indicated that TBBPA-BHEE exposure significantly compromised the motor co-ordination performance and the locomotor activities(p < 0.05). The neurobehavioral phenotype could be attributed to the obvious histopathological changes in both cerebrum and cerebellum, such as neural cell swelling, microglial activation and proliferation. A total of 911 genes were up-regulated, whereas 433 genes were down-regulated. Gene set enrichment analysis showed multiple signaling pathways, including ubiquitin-mediated proteolysis and wingless-int(Wnt) signaling pathway etc. were involved due to TBBPA-BHEE exposure. The gene ontology enrichment analysis showed the basic cellular function and the neurological processes like synaptic transmission were influenced. The toxicological effects of TBBPA-BHEE observed in this study suggested the potential neuronal threaten from unintended exposure,which would be of great value in the biosafety evaluation of TBBPA derivatives. | Qian S.Liu Na Liu Zhendong Sun Qunfang Zhou Guibin Jiang | 2018 | Journal of Environmental Sciences2018，30，1： | 7 |
| 16 | Application of nanoparticle tracking analysis for characterising the fate of engineered nanoparticles in sediment-water systems显示文摘Novel applications of nanotechnology may lead to the release of engineered nanoparticles(ENPs), which result in concerns over their potential environmental hazardous impact. It is essential for the research workers to be able to quantitatively characterise ENPs in the environment and subsequently to assist the risk assessment of the ENPs. This study hence explored the application of nanoparticle tracking system(NTA) to quantitatively describe the behaviour of the ENPs in natural sediment-water systems. The NTA allows the measurement of both particle number concentration(PNC) and particle size distribution(PSD) of the ENPs. The developed NTA method was applied to a range of gold and magnetite ENPs with a selection of surface properties. The results showed that the positively-charged ENPs interacted more strongly with the sediment than neutral and negatively-charged ENPs. It was also found that the citrate coated Au ENPs had a higher distribution percentage(53%) than 11-mercaptoundecanoic acid coated Au ENPs(20%) and citrate coated magnetite ENPs(21%). The principles of the electrostatic interactions between hard(and soft) acids and bases(HSAB) are used to explain such behaviours; the hard base coating(i.e. citrate ions) will interact more strongly with hard acid(i.e. magnetite) than soft acid(i.e. gold).The results indicate that NTA is a complementary method to existing approaches to characterise the fate and behaviour of ENPs in natural sediment. | Ping Luo Alejandro Roca Karen Tiede Katie Privett Jiachao Jiang John Pinkstone Guibin Ma Jonathan Veinot Alisatair Boxall | 2018 | Journal of Environmental Sciences2018，30，2： | 6 |
| 17 | Rapid decolorization of water soluble azo-dyes by nanosized zero-valent iron immobilized on the exchange resin显示文摘Nanosized zero-valent iron (NZVI) supported on the cation exchange resin was synthesized and applied to decompose some water soluble azo dyes. The decomposition efficiency for azo dyes was evaluated by using the aqueous suspensions and parked column of this material. Batch experiments indicated that this novel material exhibited excellent degradation ability for 0.05 g·L1 of Acid Orange 7, Acid Orange 8, Acid Orange 10, Sunset Yellow, and Methyl Orange, with decolorization ratio up to 95% in 4 min; pH value was the key factor for degradation and H+ was one of the reactants; adsorption of azo dyes onto the material existed at the beginning but reduced gradually until disappearing completely. For the packed column system, 58%~90% of azo dyes were decomposed in the 1st circle of solution passing through the column, and the adsorption onto the materials could accelerate the degradation azo dyes with the increasing reaction time. During the degradation process, Fe2+, the product of NZVI, was exchanged to the resin again and could be reduced to Fe0 by KBH4 for reusing. The 10th refreshed NZVI possessed reductive activity up to 90% of the newly systhesized NZVI. Decomposing pollutants in the aqueous solution with columns packed with NZVI immobilized on the cation exchange resin is a promising technology that can solve the reclaiming and refreshing problem of NZVI. | ZHAO ZongShan LIU JingFu TAI Chao ZHOU QunFang HU JingTian JIANG GuiBin | 2008 | Science China Chemistry2008，51，2： | 6 |
| 18 | ^(40)Ar/^(39)Ar Dating of Xuebaoding Granite in the Songpan-Garze Orogenic Belt,Southwest China,and its Geological Significance显示文摘Thus far,our understanding of the emplacement of Xuebaoding granite and the occurrence and evolution of the Songpan-Garze Orogenic Belt has been complicated by differing age spectra results.Therefore,in this study,the ^(40)Ar/^(39)Ar and sensitive high resolution ion micro-probe(SHRIMP) U-Pb dating methods were both used and the results compared,particularly with respect to dating data for Pankou and Pukouling granites from Xuebaoding,to establish ages that are close to the real emplacements.The results of SHRIMP U-Pb dating for zircon showed a high amount of U,but a very low value for Th/U.The high U amount,coupled with characteristics of inclusions in zircons,indicates that Xuebaoding granites are not suitable for U-Pb dating.Therefore,muscovite in the same granite samples was selected for ^(40)Ar/^(39)Ar dating.The ^(40)Ar/^(39)Ar age spectrum obtained on bulk muscovite from Pukouling granite in the Xuebaoding,gave a plateau age of 200.1±1.2 Ma and an inverse isochron age of 200.6±1.2 Ma.The ^(40)Ar/^(39)Ar age spectrum obtained on bulk muscovite from Pankou granite in the Xuebaoding gave another plateau age of 193.4±1.1 Ma and an inverse isochron age of 193.7±1.1 Ma. The ^(40)Ar/^(36)Ar intercept of 277.0±23.4(2σ) was very close to the air ratio,indicating that no apparent excess argon contamination was present.These age dating spectra indicate that both granites were emplaced at 200.6±1.3 Ma and 193.7±1.1 Ma,respectively.Through comparison of both dating methods and their results,we can conclude that it is feasible that the muscovite in the granite bearing high U could be used for ^(40)Ar/^(39)Ar dating without extra Ar.Based on this evidence,as well as the geological characteristics of the Xuebaoding W-Sn-Be deposit and petrology of granites,it can be concluded that the material origin of the Xuebaoding W-Sn-Be deposit might partially originate from the Xuebaoding granite group emplacement at about 200 Ma.Moreover,compared with other granites and deposits distributed in various positions in the Songpan-Garze Orogenic Belt,the Xuebaoding emplacement ages further show that the main rare metal deposits and granites in peripheral regions occurred earlier than those in the inner Songpan-Garze.Therefore,^(40)Ar/^(39)Ar dating of Xuebaoding granite will lay a solid foundation for studying the occurrence and evolution of granite and rare earth element deposits in the Songpan-Garze Orogenic Belt. | LIU Yan DENG Jun ZHANG Guibin SHI Guanghai YANG Liqiang WANG Qingfei | 2010 | Acta Geologica Sinica(English Edition)2010，84，2： | 5 |
| 19 | Estimation of bioaccessibility and potential human health risk of mercury in Chinese patent medicines显示文摘Mercury(Hg), mainly in cinnabar species, has been used in medicine for thousands of years in China, and worldwide concern has been raised on its toxicity. In this work, the amount of bioaccessible mercury in 16 Chinese patent medicines(CPMs) was measured by using an in vitro simulated digestion system, consisting of simulated gastric and intestinal fluid, to investigate the bioavailability of mercury in CPMs and evaluate its potential risk to human health. Total mercury and mercury in the gastrointestinal extracts were measured by inductively coupled plasma mass spectrometry(ICP-MS). The levels of total Hg in 16 CPMs ranged from not detected to 11.89 mg/g, with a mean value of 1.13 mg/g, while the extractable Hg ranged from not detected to 4.37 μg/g, with a mean value of 0.42 μg/g.Mercury bioaccessibility varied significantly in the investigated CPMs, depending on the ingredient. Compared to the CPMs without cinnabar(2.5%–30.9%), the percentage of mercury in the gastrointestinal supernatants for CPMs with cinnabar was quite a bit lower(0.037%). By comparing with the Food and Agricultural Organization/World Health Organization Joint Expert Committee on Food Additives(FAO/WHO) safety guideline, the average daily intake dose(ADD) of Hg in the medicines was then calculated to access the risk of mercury to human health from taking CPMs. | Lihong Liu Yu Zhang Zhaojun Yun Bin He Guibin Jiang | 2016 | Journal of Environmental Sciences2016，28，1： | 5 |
| 20 | A Comprehensive Evaluation Method for Low-permeability Reservoirs显示文摘根据地质的特征和他们低渗透的水库的有影响的因素,为低渗透的水库的评估的一个全面方法被提出。方法作为基础拿一个矩阵系统,焦点和一个压力作为限制因素回答系统的一个破裂系统。它能客观地也在开发反映低渗透的水库,而且效果的不仅存储能力和渗出物能力。同时,它能在不同发展阶段预言渗出物特征并且为低渗透的水库的发展提供一个合理地质的基础。 | Zeng Lianbo Wang Zhengguo Zhang Guibin | 2005 | Petroleum Science2005，2，4： | 5 |
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