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1Visible light-driven organic photochemical synthesis in China显示文摘In recent years, visible light-driven organic photochemical synthesis has attracted wide research interest from academic and industrial communities due to its features of green and sustainable chemistry. In this flourishing area, Chinese chemists have devoted great efforts to different aspects of synthetic chemistry. This review will summarize their representative work according to the following categories: C–H functionalization, synthesis of aromatic aza-heterocycles, asymmetric organic photochemical synthesis, transformations of small molecules and biomolecule-compatible reactions.Yiyun Chen Liang-Qiu Lu Da-Gang Yu Cheng-Jian Zhu Wen-Jing Xiao 2019Science China Chemistry2019,62,1:19
2厦门西海域表层水中PAHs污染与PAHs降解菌分布的关系显示文摘在厦门西海域设置6个站位,于2001年7月和10月两个航次对各站位表层水中多环芳烃(polycyclicaromatichydrocarbons,PAHs)的含量及几种常见PAHs的降解菌的数量进行调查,结果表明:表层水中PAHs的含量很不稳定,存在明显的时间变化。在7月的调查中,表层水中能检测到的PAHs以2—3环的为主,而在10月以4—6环的为主。低分子量的PAHs—芴和菲的含量与其降解菌的数量之间具有明显的正相关,而高分子量的PAHs—荧蒽和芘的含量与其降解菌的数量之间没有表现出相关性。田蕴 郑天凌 王新红 肖清江 张勇 2003热带海洋学报2003,22,6:14
3多环芳烃的肝脏毒性及其遗传易感性显示文摘陈波 胡云平 金泰廙 2005环境与职业医学2005,22,2:12
4Synergistically Directed Assembly of Aromatic Stacks Based Metal-Organic Frameworks by Donor-Acceptor and Coordination Interactions显示文摘A synergistically directed assembly approach to distinctive metal-organic frameworks utilizing both donor-acceptor (D-A) interaction from aromatic systems and coordination interactions is presented.Based on such an approach,the coronene-tpt (tpt =2,4,6-tri(4-pyridyl)-1,3,5-triazine) stacks based coronene-MOF-1-4 have been successfully fabricated.Their structural discrepancies with coroneneabsent control products,1'-4',illustrate clearly the significance of coronene-tpt based D-A interactions in these architectures.All these coronene-MOFs contain varied coronene-tpt stacks as organic secondary building blocks (SBUs),which are closely interrelated with the coordination based framework structures.Moreover,porous coronene-MOF-1 and-2 exhibit high physicochemical stability and significant light hydrocarbons storage and separation performances.Xi Wang Ying Zhang Ze Chang Hui Huang Xiao-Ting Liu Jialiang Xu Xian-He Bu 2019Chinese Journal of Chemistry2019,37,9:11
5Partition of polycyclic aromatic hydrocarbons on organoben-tonites from water显示文摘A series of organobentonites synthesized by exchanging organic cation such as dodecyltri methylammonium (DTMA), benzyldimethyltetradecylammonium (BDTDA), cetyltrimethyl ammonium (CTMA), octodeyltrimethylammonium (OTMA) on bentonite. The optimal condition, properties and mechanisms for the organobentonites to sorb phenanthrene, anthracene, naphthalene, acenaphthene in water were investigated in detail. The partition behavior was determined for four polycyclic aromatic hydrocarbons (PAHs), such as naphthalene, phenanthrene, anthracene and acenaphthene, from water to a series of organobentonites. The interlayer spacings and organic carbon contents of organobentonites, removal rate and sorption capacities for organobentonites to treat phenanthrene, anthracene, naphthalene, acenaphthene were correlated to the length of alkyl chains and the amounts of cation surfactant exchanged on the bentonite. Phenanthrene, anthracene, naphthalene, and acenaphthene sorption to organobentonites were characterized by linear isotherms, indicating solute partition between water and the organic phase composed of the large alkyl functional groups of quaternary ammonium cations. PAHs distribution coefficients ( K d) between organobentonites and water were proportional to the organic carbon contents of organobentonites. However, the partition coefficients ( K oc ) were nearly constants for PAHs in the system of organobentonite water. The K oc of phenanthrene, anthracene, naphthalene, acenaphthene were 2 621×10 5, 2.106×10 5, 2.247×10 4, 5.085×10 4, respectively. The means K oc values on the organobentonites are about ten to twenty times larger than the values on the soils/sediments, what is significant prerequisite for organobentonite to apply to remediation of pollution soil and groundwater. The sorption mechanism was also evaluated from octanol water partition coefficients and aqueous solubility of PAHs. The correlations between lg K oc and 1gK ow , 1g K oc and 1g S for PAHs in the system of water/organobenotonites are also discussed.CHEN Bao-liang ZHU Li-zhong 2001Journal of Environmental Sciences2001,13,2:11
6水泥窑PM_(2.5)排放特性及其PAHs风险分析显示文摘采用荷电低压颗粒物撞击器(ELPI)、便携式PM2.5采样器和稀释系统,对国内3家新型干法水泥生产厂(5条生产线)的水泥窑(包括窑头和窑尾)进行现场采样,分析水泥窑排放PM2.5的质量浓度、粒数浓度及其中的多环芳烃(PAHs)浓度,对呼吸致癌风险进行评价.结果表明:从粒数浓度分析,PM2.5中70%以上为PM0.33,这部分颗粒物主要是由气化凝结形成的.各采样点排放的PAHs主要以二环和三环的低环PAHs为主.第3个水泥厂窑头排放的PAHs含量最高,而且苯并[a]芘(BaP)超过国家所规定的8ng/m3标准限值,同时其呼吸致癌风险水平为4.46×10-4,高于可接受致癌风险水平的上限,需要有效处理.韦琳 唐海龙 郭盈盈 邹正禹 刘阳生 2014中国环境科学2014,34,5:9
7Polycyclic aromatic hydrocarbons in the graphene era显示文摘Polycyclic aromatic hydrocarbons(PAHs) have been the subject of interdisciplinary research in the fields of chemistry, physics,materials science, and biology. Notably, PAHs have drawn increasing attention since the discovery of graphene, which has been regarded as the 'wonder' material in the 21 st century. Different from semimetallic graphene, nanoscale graphenes, such as graphene nanoribbons and graphene quantum dots, exhibit finite band gaps owing to the quantum confinement, making them attractive semiconductors for next-generation electronic applications. Researches based on PAHs and graphenes have expanded rapidly over the past decade, thereby posing a challenge in conducting a comprehensive review. This study aims to interconnect the fields of PAHs and graphenes, which have mainly been discussed separately. In particular, by selecting representative examples, we explain how these two domains can stimulate each other. We hope that this integrated approach can offer new opportunities and further promote synergistic developments in these fields.Xiao-Ye Wang Xuelin Yao Klaus Mullen 2019Science China Chemistry2019,62,9:9
8Rice Aroma: A Natural Gift Comes with Price and the Way Forward显示文摘Aromatic rice belongs to a small but important sub-group of rice,which is highly regarded for its excellent aroma and superior grain quality.Aromatic rice,especially Basmati-and Jasmine-type rice,is being traded at a high price in the local and global markets.Genetically,rice aroma is a phenotypical expression of spontaneous recessive mutations of the OsBadh2 gene(also known as fgr/badh2/osbadh2/os2AP gene).These mutations inhibit the flow ofγ-aminobutyraldehyde(GAB-ald)toγ-aminobutyric acid(GABA),and consequently,the accumulated GAB-ald is diverted to a potent flavour component 2-acetyl-1-pyrroline(2AP)by a non-enzymatic reaction with methylglyoxal.The natural incidence of non-functional osbadh2 mutation along with selection and nursing by the farmer from the ancient time makes rice aroma as a prominent natural gift.As GABA and methylglyoxal play significant roles in stress tolerance,and their biosynthesis is strictly regulated in rice plants,the accumulation of 2AP in aromatic rice depends on the interaction of various genetic and environmental factors,and its production may come at some costs of sacrificing tolerance.This review focused on some potential underlying genes in the 2AP and GABA biosynthesis pathways,and analyzed most aspects of aroma formation in rice,and summarized the molecular mechanism of aroma production together with its genetic and non-genetic influencing factors.The present review also stated approaches to produce high-quality aromatic rice via developing novel cultivars and with good agronomic knowledge-based practice.Zakaria Hossain PRODHAN SHU Qingyao 2020Rice science2020,27,2:8
9THE STRUCTURE OF ARMILLARIZIN,A NEW PROTOILLUDANE SESQUITERPENOID AROMATIC ESTER FROM ARMILLARIA MELLEA(VAHL.EX FR)QUEL.显示文摘A new protoilludane sesquiterpenoid aromatic ester,named armillarizin(1)has been isolated from the artificially cultured mycelium of Armillaria me-llea(Vahl.ex Fr)Quel.(Tricholomataceae).Its structure was deduced on the ba-sis of spectral analyses.The relative configuration was established from thenuclear Overhauser effects and from the values of ~1H-~1H coupling constants.Jun Shan YANG Ya Lun SU Yu Lan WANG Xiao Zhang FENG De Quan YU Xiao Tian LIANG Institute of Materia Medica,Chinese Academy of Medical Sciences,Beijing,100050 1990Chinese Chemical Letters1990,1,2:8
10食品中烃类矿物油的污染情况及迁移研究进展显示文摘烃类矿物油是石油原油经精馏纯化形成的复杂烃类混合物,食品加工过程中、环境污染以及食品接触材料的迁移等都会导致烃类矿物油进入食品。虽然不同类型矿物油成分对人体的毒性目前还没有统一的界定,但其潜在的危害性已经引起广泛的关注。文中综述了国内外对于烃类矿物油的毒理学特性、食品中烃类矿物油的来源、污染现状及食品接触材料迁移等方面的最新研究进展,总结了目前研究中存在的问题,并对其发展趋势进行了展望。杨春艳 柯润辉 安红梅 王丽娟 黄新望 尹建军 宋全厚 2017食品与发酵工业2017,43,2:8
11Highly efficient solvent-free synthesis of quinazolin-4(3H)-ones and 2,3-dihydroquinazolin-4(1H)-ones using tetrabutylammonium bromide as novel ionic liquid catalyst显示文摘A simple and efficient procedure for the synthesis of 2-arylquinazolin-4(3H)-ones has been developed through cyclocondensation of 2-aminobenzamide with aromatic aldehydes using tetrabutylammonium bromide(TBAB) as novel neutral ionic liquid catalyst in the presence of copper(Ⅱ) chloride(CuCl2) as oxidizing agent under solvent-free conditions at 100℃.In the absence of CuCl2 and under a nitrogen atmosphere,the unoxidized intermediates,2-aryl-2,3-dihydroquinazolin-4(1H)-ones,were isolated. Treatment of these intermediates with CuCl2 in TBAB media gave the oxidized products 2-arylquinazolin-4(3H)-ones.On the other hand,cyclocondensation of 2-aminobenzamide with aromatic aldehydes in TBAB under microwave irradiation directly gave 2- arylquinazolin-4(3H)-ones.A.Davoodnia S.Allameh A.R.Fakhari N.Tavakoli-Hoseini 2010Chinese Chemical Letters2010,21,5:8
12Clove(Syzygium aromaticum):a precious spice显示文摘Clove(Syzygium aromaticum) is one of the most valuable spices that has been used for centuries as food preservative and Tor many medicinal purposes.Clove is native of Indonesia but nowadays is cultured in several parts of the world including Brazil in the slate of Bahia.This plant represents one of the richest source of phenolic compounds such as eugenol,eugenol acetate and gallic acid and posses great potential for pharmaceutical,cosmetic,food and agricultural applications.This review includes the main studies reporting the biological activities of clove and eugennl.The antioxidant and antimicrobial activity of clove is higher than many fruits,vegetables and other spices and should deserve special attention.A new application of clove as larvicidal agent is an interesting strategy to combat dengue which is a serious health problem in Brazil and other tropical countries.Pharmacokinetics and lexicological studies were also mentioned.The different studies reviewed in this work confirm the traditional use of clove as food preservative and medicinal plant standing out the importance of this plant for different applications.Diego Francisco Cortés-Rojas Claudia Regina Fernandes de Souza Wanderley Pereira Oliveira 2014Asian Pacific Journal of Tropical Biomedicine2014,4,2:8
13苯并(a)芘的健康危害及作用机制研究进展显示文摘苯并(a)芘[Benzo(a)pyrene]是多环芳烃类化合物(polycyclic aromatic hydrocarbons,PAH)的典型代表化合物,一般来源于有机燃料的不完全燃烧,可在烟草烟雾、汽车尾气以及油炸烟熏烧烤食物中被检测到.长期以来,人们对苯并(a)芘的细胞毒性、致突变性、致癌性及其他毒理学效应开展了较多研究,但其主要作用机制,尤其是低浓度暴露条件下的分子毒性机制仍不明确.近些年研究指出,苯并(a)芘可能存在较多潜在靶点,苯并(a)芘既能和DNA结合形成DNA加合物,又能够通过机体内的芳基烃受体(AhR)介导的信号通路影响基因表达.李隽晹 巴乾 黄超 王慧 2014中华预防医学杂志2014,48,2:8
14焦化厂职业暴露与肺癌关系研究进展显示文摘焦化是将煤在焦炉中干馏除去其中的挥发成分后成为焦炭的过程。在炼焦过程中逸出的气体、蒸气和烟尘统称为焦炉逸散物,其成分极其复杂,多环芳烃(polycyclic aromatic hydrocarbons ,PAHs)是其重要成分。PA Hs是分子中含有2个或2个以上苯环的碳氢化合物,主要来源于有机物的不完全燃烧,由于其致癌、致畸和致突变作用而受到广泛关注[1]。采取有效方法准确测量其浓度,对焦化厂工人职业暴露进行正确评估显得尤为重要。王阳 王一婧 2015山西医药杂志2015,44,9:8
15多环芳烃的健康损害及其健康监护显示文摘多环芳烃(polycyclic aromatic hydrocarbons,PAHs)是煤、木材、烟草、气体燃料等含碳有机物不完全燃烧产生的、具有两个及以上苯环的挥发性碳氢化合物,是最早发现且数量最多的致癌物[1].PAHs广泛分布在人类生产生活环境中,而工业生产活动(如焦油、焦炭、铝、沥青等的生产)可持续地产生高浓度PAHs,是环境PAHs的重要来源之一,而在这些职业环境中作业的工人(如焦炉工、煤焦油工、电解铝工和沥青制造工等)长期接触大量PAHs,可产生多种损伤,如氧化应激[2]、微核率增加[2-3]、加合物形成[2-4]、炎性反应[5]等,最终引起癌症或其他疾病,其中焦炉工肺癌是我国8种法定职业性肿瘤之一.因此,以焦炉工为代表的PAHs职业接触人群的早期健康监护是我国职业病防治工作的重点之一.本文就PAHs的健康损害及其健康监护进行综述.邓棋霏 郭欢 张晓敏 邬堂春 2014中华劳动卫生职业病杂志2014,32,2:7
16Determination of trace PAHs in seawater and sediment pore-water by solid-phase microextraction (SPME) coupled with GC/MS显示文摘A fast and reliable method for the determination of trace PAHs (polynuclear aromatic hydrocarbons) in seawater by solid-phase microextraction (SPME) followed by gas chromatographic (GC) analysis has been developed. The SPME operational parameters have been optimized, and the effects of salinity and dissolved organic matter (DOM) on PAHs recoveries have been investigated. SPME measures only the portion of PAHs which are water soluble, and can be used to quantify PAH partition coefficient between water and DOM phases. The detection limits of the overall method for the measurement of sixteen PAHs range from 0.1 to 3.5 ng/g, and the precisions of individual PAH measurements range from 4% to 23% RSD. The average recovery for PAHs is 88.2±20.4%. The method has been applied to the determination of PAHs in seawater and sediment porewater samples collected in Jiaozhou Bay and Laizhou Bay in Shandong Peninsula, China. The overall levels of PAHs in these samples reflect moderate pollution compared to seawater samples reported elsewhere. The PAH distribution pattern shows that the soluble PAHs in seawater and porewater samples are dominated by naphthalenes and 3 ring PAHs. This is in direct contrast to those of the sediment samples reported earlier, in which both light and heavy PAHs are present at comparable concentrations. The absence of heavy PAHs in soluble forms (<0.1-3.5 ng/L) is indicative of the strong binding of these PAHs to the dissolved or solid matters and their low seawater solubility.Lee Franck Sen-Chun 2006Science China Chemistry2006,49,6:6
17土壤样品中多环芳烃的GC-MS快速分析方法显示文摘In this study,a GC-MS/SIM method was used to analyze 16 PAHs in soil by ASE on-line clean-up.The average recoveries were ranged from 67% to 129%.The relative standard deviations were between 2.7% and 21.1%.The calculated limits of detection were no more than 0.95 ng/g.This method was fast,simple,and cost-saving,and can be used in the large quantities of samples analysis.佟玲 周瑞泽 吴淑琪 张玲金 李重九 2008分析测试学报2008,27,S1:6
18Measurement of mass attenuation coefficients,effective atomic numbers,and electron densities for different parts of medicinal aromatic plants in low-energy region显示文摘The mass attenuation coefficients(l/q) for different parts(root, flower, stem, and leaf) of three medicinal aromatic plants(Teucrium chamaedrys L. subsp. sinuatum,Rheum ribes, and Chrysophthalmum montanum) were measured using an ^(241)Am photon source in a stable geometry and calculated using the Monte Carlo N-Particle Transport Code System-extended(MCNPX) code and the WinXCOM program. The experimental and theoretical MCNPX and WinXCOM values exhibited good agreement.The measured mass attenuation coefficient values were then used to compute the effective atomic number(Z_(eff))and electron density(N_E) of the samples. The results reveal that S1-S(stem of Teucrium chamaedrys L. subsp. sinuatum) has the highest values of l/q and Zeff.M.I.Sayyed F.Akman I.H.Geccbesler H.O.Tekin 2018Nuclear Science and Techniques2018,29,10:5
19持久性污染物多环芳烃的研究进展显示文摘多环芳烃(polycyclic aromatic hydrocarbons,PAHs)是指含有两个以上苯环的碳氢化合物,具有高脂溶性和相对低的水溶性,为持久性有机污染物(POPs)中的一类,因其不易降解且危害较大而备受关注。PAHs具有挥发性,对环境及食物造成严重污染,危害人类的生存环境及身体健康。目前已知的PAHs及其衍生物达400多种,绝大部分具有致癌性,如苯并α芘,苯并α蒽等。郑博文 2016工业卫生与职业病2016,42,5:5
20Determination of Aromatic Components of Rosa davurica Pall. by Headspace Solid Phase Microextraction Combined with GC-MS显示文摘[Objectives] To determine the aromatic components of Rosa davurica Pall. [Methods] 42 kinds of aromatic components were identified from the flowers of R. davurica by headspace solid phase microextraction( HS-SPME) combined with gas chromatography-mass spectrometry( GC-MS). The main compounds were alcohols( 54. 88%) and aldehydes( 19. 55%). [Results] The top five components with the highest relative content were phenylethyl alcohol( 12. 69%),geraniol( 9. 85%),citronellol( 8. 80%),nerol( 7. 84%) and 2-n-pentylfuran( 7. 45%). [Conclusions] Headspace solid phase microextraction( HS-SPME) combined with gas chromatography-mass spectrometry( GC-MS) can provide basis for further development and utilization of R. davurica.Yuan NIU Qiong XU Jian ZHUANG Yude WANG Lilan DAI Dengfei LI Yalan ZHAO 2018Medicinal Plant2018,9,5:5
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