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Porous covalent organic frameworks-improved solid phase microextraction ambient mass spectrometry for ultrasensitive analysis of tetrabromobisphenol-A analogs

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Chinese Chemical Letters 2022年第8期33卷 3849-3852页

作者： Wei Gao Min Li Yun Fa zongshan zhao Yaqi Cai Xiangfeng Liang Yongliang Yu Guibin Jiang Research Center for Analytical Sciences Department of ChemistryCollege of SciencesNortheastern UniversityShenyang 110819China CAS Key Laboratory of Biobased Materials Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China College of Environmental Science and Engineering Qingdao UniversityQingdao 266071China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China

Owing to frequent environmental monitoring of tetrabromobisphenol-A(TBBPA)analogs and their potential ecotoxicological effects on organisms,analysis of trace levels of TBBPA analogs with more non-polar and less water-soluble characteristics is of great significance for studying their environmental behaviors and toxic ***,a fast and sensitive technique is developed for directly detecting aqueous TBBPA analogs,including TBBPA mono(allyl ether)(TBBPA-MAE),TBBPA mono(2,3-dibromopropyl ether)(TBBPAMDBPE),TBBPA mono(2-hydroxyethyl ether)(TBBPA-MHEE)and TBBPA mono(glycidyl ether)(TBBPAMGE),by combining solid phase microextraction(SPME)based on porous covalent organic frameworks(Porous-COFs)with constant flow desorption ionization-mass spectrometry(CFDI-MS).As chromatographic separation is replaced by constant flow desorption,each sample can be analyzed within 7 *** hierarchical porous structures(microporous,mesoporous and macroporous)of COFs lead to the enhanced mass transfer and the easier accessibility of active sites to TBBPA analogs,so that the extraction efficiency is 2.3-3.6 times higher than pure microporous COFs,and far superior to commercial *** detection limit and quantification limit of this method are 0.1-1 and 0.4-3.2 ng/L,*** levels of TBBPA analogs from 5.0 ng/L to 66 ng/L have been successfully detected in river and sea water samples,showing great potential for subsequent studies of their environmental behaviors and toxicological effects.

关键词： Environmental analysis Covalent organic frameworks Solid phase microextraction Ambient mass spectrometry TBBPA analogs

Preparation of Polyaniline/TiO_2 Composite Nanotubes for Photodegradation of AZO Dyes

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Journal of Wuhan University of Technology(Materials Science) 2014年第3期29卷 468-472页

作者：程杨 AN Liang zhao zongshan WANG Guanghui College of Chemical Engineering and Technology Wuhan University of Science and Technology Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education of the People's Republic of China Ocean University of China

Polyaniline （PANI） composite nanotubes （90-130 nm in diameter） containing titanium dioxide （TiO2） nanoparticles （about 10 nm in diameter） were synthesized through a self-assembly process in the presence of a-naphthalenesulfonic acid （a-NSA） as the dopant. It was found that PANI-TiO2 composites and PANI nanotubes both behaved with significant photocatalytic activities towards AZO dyes, during 2 h photocatalytic processes under natural light, the degradation ratio was 94.2% and 97.2% respectively （methyl orange and orange II）. The morphology of such products was characterized by SEM. The specific surface area of such composite nanotubes was 14.7 m2/g compared to normal polyaniline which was 0.27 m2/g. IR and X-ray diffraction characterizations showed that the chemical chain of the composite nanotubes was identical to that of the doped PANI. It may provide a new way for photodegradation of organic contaminants by using conjugated polymer with dimensional structure.

关键词： polyaniline TiO2 nanotube photocatalysis

我国海洋环境污染司法鉴定问题研究——基于2017—2022年涉海裁判文书的分析

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中国司法鉴定 2024年第3期 9-14页

作者：王晴张晴郝永生杜凯赵宗山姚甲强吕俊岗最高人民检察院检察技术信息研究中心北京100144 山东省泰安市肥城市人民检察院山东泰安271600 青岛大学环境科学与工程学院山东青岛266071

随着海洋经济的快速发展,海洋环境污染问题日益突出。现对全国2017—2022年期间的55份关于海洋环境污染裁判文书进行分析,从司法实践的角度总结当前海洋环境污染司法鉴定类型及实施情况。这些海洋环境污染类案件主要涉及船舶污染、陆源... 详细信息

随着海洋经济的快速发展,海洋环境污染问题日益突出。现对全国2017—2022年期间的55份关于海洋环境污染裁判文书进行分析,从司法实践的角度总结当前海洋环境污染司法鉴定类型及实施情况。这些海洋环境污染类案件主要涉及船舶污染、陆源污染物、海洋倾废、海洋开发等,占比分别为25.45%、30.91%、14.55%和29.09%。此类案件专业性强,涉及领域广,80%以上都涉及理化检验或损害鉴定评估类司法鉴定。通过对以上案件的司法鉴定情况进行分析,发现这些司法鉴定案例普遍存在检测指标明确、检测技术溯源性差、损害鉴定评估费用高、收费标准不统一等特点。为更好地支持海洋环境污染类案件的办理,司法鉴定工作应更多地关注新型污染物鉴定技术,创新污染物溯源方法,发挥专家意见作用,制定统一评估标准等。

关键词：海洋环境污染裁判文书司法鉴定溯源评估

Rapid decolorization of water soluble azo-dyes by nanosized zero-valent iron immobilized on the exchange resin

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Science China Chemistry 2008年第2期51卷 186-192页

作者： zhao zongshan LIU JingFu TAI Chao ZHOU QunFang HU JingTian JIANG GuiBin Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Chemistry Shandong UniversityJinan 250100China

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.

关键词： azo-dye nanosized-zero valent iron (NZVI) decomposition packing column

Distribution of polybrominated diphenyl ethers in the surface sediment of the East China Sea

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Chinese Science Bulletin 2014年第4期59卷 379-387页

作者： Huijuan Li Jing Lan Guoliang Li zongshan zhao Guibin Jiang Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education Ocean University of China College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural University State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

The concentrations of polybrominated diphenyl ethers(PBDEs)were determined in the surface sediments of 20 locations in the East China Sea(ECS).The P PBDEs(sum of 13 PBDE congeners,without brominated diphenyl ether 209(BDE209)ranged from 2.6 to 49 pg g-1(dry weight)with an average of 21 pg g-1,which fell at the low end of the global *** spatial distribution presented an offshore decreasing trend towards the outer shelf and along the coastline,suggesting a direct influence of the inputs by the Yangtze *** P PBDE concentrations were influenced by the total organic carbon of the sediment,as demonstrated by their similar spatial *** P C27?C29?C31n-alkanes concentrations and sand%reported in the literature for sediments in the ECS presented similar spatial distributions as P PBDEs,which suggests that a considerable part of P PBDEs may come from the Yangtze River and that grain size plays an important role in PBDE *** three dominant congeners were BDE28(19.8%),BDE47(26.4%),and BDE99(16.8%).The present study compared the congener patterns of the sedimentary PBDEs with those of commercial *** results indicated the possible use of penta-BDE in the Yangtze River Basin in a wide range or the fractionation and transformation of PBDE congeners during their long-range transport.

关键词：多溴联苯醚沉积物分布表层沉积物东中国海多溴二苯醚空间分布长江流域 PBDEs

Seasonal trend of ambient PCDD/Fs in Tianjin City, northern China using active sampling strategy

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Journal of Environmental Sciences 2012年第11期24卷 1966-1971页

作者： Lei Ding Yingming Li Pu Wang Xiaomin Li zongshan zhao Qinghua Zhang Ting Tuan Guibin Jiang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

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） x 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 x 103 fg I-TEQ]m3 in summer and 7.123 x 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.

关键词： PCDD/Fs seasonal trend Tianjin high-volume air sampling

Spatial concentration,congener profiles and inhalation risk assessment of PCDD/Fs and PCBs in the atmosphere of Tianjin,China

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Chinese Science Bulletin 2013年第9期58卷 971-978页

作者： DING Lei LI YingMing WANG Pu LI XiaoMin zhao zongshan RUAN Ting ZHANG QingHua State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of Sciences

Polychlorinated dibenzo-p-dioxins/dibenzofurans(PCDD/Fs) and polychlorinated biphenyls(PCBs) were monitored in a seasonal passive sampling scheme during June 2008 and January 2009 to investigate the spatial concentration,congener profiles and evaluate the potential inhalation risk in different functional areas in Tianjin,*** spatial air concentrations and I-TEQs ranged 1.08×102-8.19×10 3 fg m-3(average 2.63×103 fg m-3) and 4.08-325 fg I-TEQ m-3(average 91.4 fg I-TEQ m-3) respectively for PCDD/*** concentration and I-TEQs of PCBs were 3.08×104-3.01×105 fg m-3(average 1.39×105 fg m-3) and 1.72-49.6 fg I-TEQ m-3(average 18.5 fg I-TEQ m-3).It is obvious that PCB concentrations were several hundred times higher than the PCDD/***,the ambient air PCDD/Fs contributed a major part to the total toxicity equivalents,varying from 72.7% to 89.0%(average 81.8%).The atmospheric PCDD/F levels were observed to be higher in winter for most of sampling sites in the ***,inhalation risk assessment showed that local residents might suffer more risk near the point sources than those in living area,industrial zones and background area in Tianjin ***,the total daily dioxin intake was approximately several to hundreds of times lower than the WHO criteria,showing relatively low exposure risks from the impact of industry point sources in Tianjin City.

关键词： PCDD 风险评估多氯联苯空间集聚天津市中国集中度气氛

Restoring periodontal tissue homoeostasis prevents cognitive decline by reducing the number of Serpina3nhigh astrocytes in the hippocampus

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The Innovation 2024年第1期5卷 98-108页

作者： zongshan Shen Shuhong Kuang Yong Zhang Jiayao Chen Shuting Wang Congfei Xu Yunjia Huang Min Zhang Shuheng Huang Jun Wang ChuanJiang zhao Zhengmei Lin Xuetao Shi Bin Cheng Hospital of Stomatology Guangdong Provincial Key Laboratory of StomatologyGuanghua School of StomatologySun Yat-sen UniversityGuangzhou 510060China National Engineering Research Centre for Tissue Restoration and Reconstruction South China University of TechnologyGuangzhou 510006China Key Laboratory of Biomedical Engineering of Guangdong Province South China University of TechnologyGuangzhou 510006China School of Biomedical Science and Engineering South China University of TechnologyGuangzhou 510650China The First Affiliated Hospital Sun Yat-sen UniversityGuangzhou 510080China

Cognitive decline has been linked to periodontitis through an undetermined pathophysiological *** study aimed to explore the mechanism underlying periodontitis-related cognitive decline and identify therapeutic strategies for this *** single-nucleus RNA sequencing we found that changes in astrocyte number,gene expression,and cell‒cell communication were associated with cognitive decline in mice with *** addition,activation of the NOD-like receptor family pyrin domain containing 3(NLRP3)inflammasome was observed to decrease the phagocytic capability of macrophages and reprogram macrophages to a more proinflammatory state in the gingiva,thus aggravating *** further investigate this finding,lipid-based nanoparticles carrying NLRP3 siRNA(NPsiNLRP3)were used to inhibit overactivation of the NLRP3 inflammasome in gingival macrophages,restoring the oral microbiome and reducing periodontal ***,gingival injection of NPsiNLRP3 reduced the number of Serpina3nhigh astrocytes in the hippocampus and prevented cognitive *** study provides a functional basis for the mechanism by which the destruction of periodontal tissues can worsen cognitive decline and identifies nanoparticle-mediated restoration of gingival macrophage function as a novel treatment for periodontitis-related cognitive decline.

关键词： NLRP3 periodontal number

石墨烯基气凝胶的制备及其油吸附性能研究进展

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精细化工 2022年第3期39卷 433-441,487页

作者：许文龙王晟包艳王海燕陈爽赵宗山中国环境科学研究院北京100012 中国科学院青岛生物能源与过程研究所山东青岛266101 中国石油大学(华东)化学工程学院山东青岛266580 青岛大学环境科学与工程学院山东青岛266071

海上漏油的频繁发生以及采油废水、工业含油污水的大量排放造成水资源大片污染和生态系统平衡的严重破坏。目前,从水体中分离油品和有机污染物已受到越来越多的商业和学术的关注。石墨烯基气凝胶是由二维石墨烯片层组装成的三维宏观材料... 详细信息

海上漏油的频繁发生以及采油废水、工业含油污水的大量排放造成水资源大片污染和生态系统平衡的严重破坏。目前,从水体中分离油品和有机污染物已受到越来越多的商业和学术的关注。石墨烯基气凝胶是由二维石墨烯片层组装成的三维宏观材料,因孔隙率高、比表面积大、密度低、机械性能强等特点在油水分离领域具有广阔的应用前景,已成为当前研究热点。该文总结了石墨烯基气凝胶的结构设计、组装及干燥方法,归纳了近年来其在油水分离中的应用进展,分析了石墨烯基气凝胶在油水分离中的影响因素以及石墨烯基气凝胶吸附油品后的再生方法,并对石墨烯基气凝胶在油水分离领域的研究现状和未来研究方向进行了简要评述。

关键词：石墨烯基气凝胶结构设计和组装干燥方法油水分离吸附剂再生