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| 1 | Microplastic pollution in Yellow River,China:Current status and research progress of biotoxicological effects显示文摘This study aims to comprehensively assess the environmental risks of microplastics in the Yellow River,achieving the following results through comprehensive research.The average microplastic abundances in the river waters and sediments are 5358-654000 n/m3 and 43.57-615 items/kg,respectively,and there are fewer microplastics in water samples than in sediments.Microplastics in the study area can be divided into five types according to their occurrence morphologies,namely fragments,foams,films,fibers,and particles.The most widely distributed pollution types in sediments include debris,fibers,and particles.In contrast,fibers are the dominant type in water samples,accounting for 68.18%‒98.93%.The chemical components of the microplastics include polyethylene,polypropylene,polystyrene,polyethylene terephthalate,and polyvinyl chloride.The microplastics are in four colors,with white accounting for a higher proportion.The grain size of the microplastics in tributaries or lakes of the Yellow River is less than 2 mm,which makes them liable to enter organisms for enrichment.Furthermore,the sources of the microplastics are closely related to agricultural and industrial production and biological activities in habitats and exhibit seasonal and hydrological characteristics.The microplastics in the study area show the adsorption of metals and nonmetals to different degrees,which increases the pollution risks of heavy metals combined with microplastics.In addition,microplastics can accumulate in organisms in the Yellow River and cause physical,biochemical,and other damage to aquatic organisms,thus further posing carcinogenic risks to human beings.Therefore,it is necessary to study,monitor,and control the pollution and effects of microplastics in the Yellow River,in order to provide theoretical references for the control of pollution and ecological risk of microplastics in the river. | Rui-ping Liu Zhi-zhong Li Fei Liu Ying Dong Jian-gang Jiao Ping-ping Sun El-Wardany RM | 2021 | China Geology2021，4，4： | 3 |
| 2 | Migration and speciation transformation mechanisms of mercury in undercurrent zones of the Tongguan gold mining area, Shaanxi Loess Plateau and impact on the environment显示文摘In order to study the migration and transformation mechanism of Hg content and occurrence form in subsurface flow zone of gold mining area in Loess Plateau and its influence on water environment,the field in-situ infiltration test and laboratory test were carried out in three typical sections of river-side loess,alluvial and proluvial strata in Tongguan gold mining area of Shaanxi Province,and the following results were obtained:(1)The source of Hg in subsurface flow zone is mainly caused by mineral processing activities;(2)the subsurface flow zone in the study area is in alkaline environment,and the residual state,iron and manganese oxidation state,strong organic state and humic acid state of mercury in loess are equally divided in dry and oxidizing environment;mercury in river alluvial or diluvial strata is mainly concentrated in silt,tailings and clayey silt soil layer,and mercury has certain stability,and the form of mercury in loess is easier to transform than the other two media;(3)under the flooding condition,most of mercury is trapped in the silt layer in the undercurrent zone where the sand and silt layers alternate with each other and the river water and groundwater are disjointed,and the migration capacity of mercury is far less than that of loess layer and alluvial layer with close hydraulic connection;(4)infiltration at the flood level accelerates the migration of pollutants to the ground;(5)the soil in the undercurrent zone is overloaded and has seriously exceeded the standard.Although the groundwater monitoring results are safe this time,relevant enterprises or departments should continue to pay attention to improving the gold extraction process,especially vigorously rectify the small workshops for illegal gold extraction and the substandard discharge of the three wastes,and intensify efforts to solve the geological environmental problems of mines left over from history.At present,the occurrence form of mercury in the undercurrent zone is relatively stable,but the water and soil layers have been polluted.The risk of disjointed groundwater pollution can not be ignored while giving priority to the treatment of loess and river alluvial landform areas with close hydraulic links.The research results will provide a scientific basis for water conservancy departments to groundwater prevention and control in water-deficient areas of the Loess Plateau. | Rui-ping Liu You-ning Xu Hui-chao Rui El-Wardany RM Ying Dong | 2021 | China Geology2021，4，2： | 3 |
| 3 | A chemical extraction method for mimicking bioavailability of polycyelic aromatic hydrocarbons to wheat grown in soils containing various amounts of organic matter 显示文摘 | Tao S Xu F Liu W Cui Y Coveney RM | 2006 | Environ Sci Technol2006，40，7： | 1 |
| 4 | Effects of propofol and etomi- date pretreatment on glucocorticoid receptor expression fol- lowing induction of sepsis in rats 显示文摘 | Wang C Liu N Li RM | 2015 | Genet Mol Res2015，14，2： | 1 |
| 5 | (R)-alpha-lipoic acid reverses the age-related loss in GSH redox staus in post-mitotic tissues: evidence for increased cysteine requirement for GSH synthesis显示文摘 | Su JH Wang H Liu RM | 2004 | Arch Bioehem Biophys2004，423，1： | 1 |
| 6 | Development of the electroretinographic oscillatory potenrials in normal and ROP rats 显示文摘 | Liu K Akula JD Hansen RM Moskowitz A Kleinman MS Fulton AB | 2006 | Invest Ophthalmol Vis Sci2006，47，12： | 1 |
| 7 | Autoimmunity in the pathogenesis and treatment of keratocoryunctivitis sicca显示文摘 | LIU KC HUYNH K GRUBBS J DAVIS RM | 2014 | Curr Allergy Asthma fiep2014，14，1： | 1 |
| 8 | 显示文摘 | Liu KZ Schultz CP Mohammad RM | 1998 | Cancer Lett1998，127，： | 1 |
| 9 | Dendritic cell function in vivo during the steady state: a role in peripheral tolerance显示文摘 | Steinman RM Hawiger D Liu K | 2003 | Ann NY Acad Sci2003，987，： | 1 |
| 10 | Heat shock:A new approach for myocardial preservation in cardiac surgery显示文摘 | Liu X Engelman RM Cordis GA | 1992 | Circulation1992，86，5： | 1 |
| 11 | Osteocyte apoptosis is mechanically regulated and induces angiogenesis in vitro显示文摘 | Cheung WY Liu C Tonelli-Zasarsky RM | | 0，，04： | 1 |
| 12 | Maternal mortality and severe morbidity associated with low-risk planned cesarean delivery versus planned vaginal delivery at term 显示文摘 | Liu S Liston RM Joseph KS | 2007 | CMAJ2007，176，4： | 1 |
| 13 | Mechanisms of glutamate cysteine ligase (GCL) induction by 4-hydroxynonenal 显示文摘 | Iles KE Liu RM | 2005 | Free Radic Biol Med2005，38，5： | 1 |
| 14 | Application of diffusion tensor imaging to magnetic resonance-guided brain tumor resection显示文摘 | Tummala RP Chu RM Liu H | 2003 | Pediatr Neurosurg2003，39，1： | 1 |
| 15 | Activity of camptothecin,harringtonin,cantharidin and curcumae in the human tumor stem cell assay显示文摘 | Jiang TL Salmon SE Liu RM | 1983 | Eur J Cancer Clin Oncol1983，19，2： | 1 |
| 16 | 显示文摘 | Shaheen RM Davis DW Liu W | 1999 | Cancer Res1999，59，21： | 1 |
| 17 | Dendritic cell function in vivo during the steady state: a role in peripheral tolerance显示文摘 | Steinman RM Hawiger D Liu K | 2003 | Ann N Y Acad Sci2003，987，： | 1 |
| 18 | Onset of breast and pubic hair development and menses in urban chinese girls 显示文摘 | Ma HM Du ML Luo XP Chen SK Liu L Chen RM | 2009 | Pediatrics2009，124，2： | 1 |
| 19 | Evidence for a lan-guage quantitative trait locus on chromosome 7q in multiplexautism families显示文摘 | Alarcon M Cantor RM Liu J | 2002 | Am J Hum Genet2002，70，： | 1 |
| 20 | Antiangiogenic therapy targeting the tyrosine kinase receptor for vascular endothelial growth factor receptor inhibits the growth of colon cancer liver metastasis and induces tumor and endothelial cell apoptosis显示文摘 | Davis DW Liu W | 1999 | Camcer Res1999，59，21： | 1 |
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