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Extraction Technology and co.tent Determination of Total Flavonoids from Traditional Chinese Medicine Yipichou

Medicinal Plant 2021年第1期12卷 47-50,55页

作者： Qianqian LIU Wen ZHONG Zongxi SUN Xiumei MA Xinli LU Yusheng HUANG Jingrong LU Jiangcun WEI guangxi International Zhuang Medicine Hospital Nanning 530201China guangxi University of Chinese Medicine Nanning 530200China guangxi jialu human resource consulting co. Ltd.Nanning 530031China

[Objectives]The research aimed to optimize extraction technology of total flavonoids from traditional Chinese medicine Yipichou,and establish methods of extraction and co.tent determination of its medicinal materials.[Methods]Using reflux extraction method,total flavonoids of Yipichou were *** single-factor test,influence of extraction method,extraction solvent co.centration,extraction volume and extraction time on co.tent of total flavonoids from Yipichou was *** orthogonal test,extraction co.ditions were optimized,and optimal extraction technology of total flavonoids from Yipichou was obtained.[Results]The optimal extraction process of total flavonoids from Yipichou was as below:70%of methanol,1∶40 of solid-liquid ratio,and 1.0 h of reflux extraction time.[co.clusions]In the test,total flavonoids were extracted from Yipichou,with better repeatability,and stable and feasible method,which co.ld provide certain scientific basis for studying quality standard of this medicinal material.

关键词： Yipichou Total flavonoids Extraction process Ultraviolet-visible spectrophotometry

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Pollution of hazardous substances in industrial co.struction and demolition wastes and their multi-path risk within an abandoned pesticide manufacturing plant

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Frontiers of Environmental Science & Engineering 2017年第1期11卷 123-135页

作者： Sheng Huang Xin Zhao Yanqiu Sun Jianli Ma Xiaofeng Gao Tian Xie Dongsheng XU Yi Yu Youcai Zhao The State Key Laboratory of Pollution co.trol and resource Reuse Tongji University Shanghai 200092 China Shanghai Chengpei Enterprise Management consulting co. Ltd. Shanghai 200232 China Tianjin Academy of Environmental Sciences Tianjin 300191 China Debin Environmental Protection and Technology Holding co. Ltd. Shanghai 200092 China Shanghai Design Institute in Environmental Sanitary Engineering Shanghai 200092 China

Exploration of heavy metals and organic pollutants, their leaching capacity along with health and environmental risks in co.taminated industrial co.struction and demolition waste （ICDW） within a pesticide manufacturing plant were investigated. A maximum co.tent of 90.8 mg·kg-1 Cd was found present in the wastes, which might originate from phosphorus rocks and industrial sulfuric acid used in pesticide production processes. An average co.centration of 979.8 mg·kg-1 dichlorovos and other 11 organophosphorus pesticide were also detected. Relatively high leaching rates of around 4.14‰ were obtained from laboratory simulated ICDW using both glacial acetic acidsodium hydroxide and deionized water. Pesticide pollutants had the strongest tendency to retaining on dry bricks （leaching rate 1.68 9‰） co.pared to mortar-co.tings, etc. due to their different physical characteristics and octanol-water partioning co.fficient. Mobility of pesticide from on-site ICDW by water was spatially co.related to waste types, process sections and human activities, with a flux of leaching rate between 5.9‰ to 27.4%. Risk-based co.rective action （RBCA） model was used to simulate the risk of co.taminated ICDW debris randomly scattered. Oral and demlal ingestion amount by local workers was 9.8 × 10-3 and 1.9 × 10-2 mg.（kg-d）-1, respectively. Potential leaching risk to aquatic systems exceeded the limit for nearly 75% waste. Environmental and health risk exceedance was found in most ICDW, while the risk value of the most severely co.taminated brick waste was 660 times beyond critical level. Implications for waste management involving co.struction and deco.struction work, waste transferring and regulation supplying were also provided.

关键词： Industrial demolition wastes Heavy metals Pesticides Leaching characteristics Risk assessment Waste management

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No Sustainability without Technical, Fiscal and Social Innovation

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Chinese Journal of Population,resources and Environment 2007年第3期5卷 9-15页

作者： Schmidt-Bleek F Cheng Yiheng Factor 10 Institute La Rabassiere Carrere des Bravengues F-83660 Carnoules Provence France Quanta K＆M consulting co. Kunshan Yangzhou Jiangsu 215341 China

Officially, the environmental protection from industrial insults began with Rachel Carson＇s book ＂The Silent Spring＂ in 1963. Protection priorities have since changed. They can be grouped into three successive phases.

关键词：中国技术创新社会变革财政收入环境保护生物圈疾病臭氧层破坏

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Read across introduction and global applicationp

Read across introduction and global applicationp

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中国毒理学会第六届全国毒理学大会

作者： Summer SHEN Nicholas BALL Rene HUNZIKER Edward CARNEY Darrell BOVERHOF Toxico.ogy Environmental Research and consulting The Dow Chemical Company Dow Chemical(China)Investment Co.Ltd.Shanghai

＜正＞Chinese regulations currently have a heavy reliance on animal testing data,which can be time and animal co.suming,resource intensive and expensive to *** China new chemical reg- istration,data from predictive approaches such as QSAR and read across are usually not accepted unless the standard study co.ld not be co.ducted because of technical *** a co.sequence,it takes long time to assess new chemicals hazards and potential *** affects the co.petitiveness of co.panies both in and outside of *** the potential introduction of new legislation in China,particularly one that is similar to EU REACH in terms of the data requirements,it will be necessary to co.sider how to assess hazards and risks of existing and new chemicals without relying solely on extensive animal testing *** solution is accepting the use of read across to more effectively utilize available *** across is an approach for predicting endpoint information for one substance based on data from structurally or mechanistically related substance（s）.The reliability of read-across depends on the quality of the measured data and the appropriate selection of the characteristics and measures of similarity on structure,mode of action,toxico.inetics or *** across can be applied to predict a range of properties,such as physical-chemical properties,environmental fate,human health effects and *** done in a scientifically robust way,read across can avoid unnecessary testing,reducing animal use as well as co.ts and time typically associated with preparing a toxico.ogical ***, at the same time it still allows a robust characterization of hazards and therefore can provide the same high level of protection for people and the *** use of read across is well established in many other geographic regions,and co.prehensive technical guides exist,for example the OECD and ECHA technical guidelines,which will help ensure the harmonized applica

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