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Quantitative characterizations of anisotropic dynamic properties in organic-rich shale with different kerogen content

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Petroleum Science 2024年第2期21卷 855-865页

作者： jian-Yong Xie yan-Ping Fang xing-hua Wu jian'er Zhao Jun-Cheng Dai Jun-xing Cao Ji-Xin Deng State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu610059SichuanChina Key Lab of Earth Exploration&Information Techniques of Ministry of Education Geophysical InstituteChengdu University of TechnologyChengdu610059SichuanChina PetroChina Southwest Oil&Gasfield Company Chengdu610017SichuanChina

Understanding the quantitative responses of anisotropic dynamic properties in organic-rich shale with different kerogen content(KC)is of great significance in hydrocarbon exploration and *** controlled experiments with a single variable is challenging for natural shales due to their high variations in components,diagenesis conditions,or pore *** employed the hot-pressing technique to construct 11 well-controlled artificial shale with varying *** artificial shale samples were successive machined into prismatic shape for ultrasonic measurements along different *** revealed bedding perpendicular P-wave velocities are more sensitive to the increasing KC than bedding paralleling velocities due to the preferential alignments of *** elastic stiffnesses except C_(13)are generally decreasing with the increasing KC,the variation of C_(1) and C_(33)on kerogen content are more sensitive than those of C_(44)and C_(66).Apparent dynamic mechanical parameters(v and E)were found to have linear correlation with the true ones from complete anisotropic equations independent of KC,which hold value towards the interpretation of well logs consistently across formations,Anisotropic mechanical parameters(ΔE and brittlenessΔB)tend to decrease with the reducing KC,withΔB showing great sensitivity to KC *** the range of low KC(10%),the V_(P)/V_(S) ratio demonstrated a linearly negative correlation with KC,and the V_(P)/V_(S) ratio magnitude of less than 1.75may serve as a significant characterization for highly organic-rich(>10%)shale,compilation of data from natural organic rich-shales globally verified the similar systematic relationships that can be empirically used to predict the fraction of KC in shales.

关键词： Elastic properties Organic shale Anisotropy Kerogen content Physical modeling

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Method for determining effective flame emissivity in a rotary kiln incinerator burning solid waste

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第12期13卷 969-978页

作者： jin-cai du1,2,qun-xing huang1,jian-hua yan1 (1State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China) (2School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,China) 1. State Key Laboratory of Clean Energy Utilization Zhejiang University Hangzhou 310027 China 2. School of Aeronautics and Astronautics Zhejiang University Hangzhou 310027 China

Temperature is the most important parameter for the improvement of combustion efficiency and the control of *** order to obtain accurate flame temperatures in a rotary kiln incinerator using non-intrusive thermographic method,the effective flame emissivity was studied.A combined narrow-and wide-band model and Mie scattering method were used to calculate the radiative properties for gases and fly-ash particles under different combustion *** effects of the air/waste ratio and fly-ash particles on the effective flame emissivity were *** results of numerical calculations showed that the effective emissivity decreased from 0.90 to 0.80 when the air/waste ratio increased from 1.0 to 1.8,and the effect of the fly-ash particles was ignorable under the conditions discussed in this *** measurement results indicated that the accuracy of the thermographic temperature measurements improved significantly if the setting of the flame emissivity was adjusted according to the air/waste ratio.

关键词： Thermographic temperature measurement Effective flame emissivity Rotary kiln incinerator Air/waste equivalenceratio

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Retinal nerve fiber layer defects and chronic kidney disease:the Kailuan Eye Study

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International Journal of Ophthalmology(English edition) 2024年第9期17卷 1696-1706页

作者： Qian-Qian Wan jin-Qiong Zhou Li-jian Fang Ya-xing Wang Ye-Nan Wang Qian Wang yan-Ni yan Xuan yang Shou-Ling Wu Shuo-hua Chen Jost B Jonas Wen-Bin Wei Beijing Tongren Eye Center Beijing Key Laboratory of Intraocular Tumor Diagnosis and TreatmentBeijing Ophthalmology&Visual Sciences Key LabMedical Artificial Intelligence Research and Verification Key Laboratory of the Ministry of Industry and Information TechnologyBeijing Tongren HospitalCapital Medical UniversityBeijing 100730China Department of Ophthalmology the Second Hospital of Anhui Medical UniversityHefei 230000Anhui ProvinceChina Department of Ophthalmology Beijing Liangxiang HospitalCapital Medical UniversityBeijing 102400China Beijing Institute of Ophthalmology Beijing Key Laboratory of Ophthalmology and Visual SciencesBeijing Tongren Eye CenterBeijing Tongren HospitalCapital Medical UniversityBeijing 100730China Department of Ophthalmology Xuanwu HospitalCapital Medical UniversityBeijing 100730China Department of Cardiology Kailuan General HospitalTangshan 063000Hebei ProvinceChina Health Care Center Kailuan GroupTangshan 063000Hebei ProvinceChina Department of Ophthalmology Medical Faculty Mannheim of the Ruprecht-Karls-University of HeidelbergHeidelberg 69117Germany

AIM:To investigate whether retinal nerve fiber layer defects(RNFLDs)is a potential risk factor for chronic kidney disease(CKD)in Chinese ***:The Kailuan Eye Study was a populationbased study that included 14440 *** participants underwent detailed assessments,RNFLDs were diagnosed using color fundus ***:Overall,12507 participants[8533 males(68.23%)]had complete systemic examination data and at least one evaluable fundus *** were found in 621 participants[5.0%;95%confidence interval(CI):4.6%-5.34%],and 70 cases of multiple RNFLDs were found(11.27%).After adjusting multiple factors,RNFLDs was significantly associated with CKD severity,the ORs of CKD stage 3,stage 4 and stage 5 were 1.698,4.167,and 9.512,*** RNFLDs were also associated with CKD severity after adjusting multiple factors,the ORs of CKD stage 3 and stage 5 were 4.465 and 11.833 ***,2294 participants had CKD(18.34%,95%CI:17.68%-18.99%).After adjusting for other factors,CKD presence was significantly correlated with the presence of ***:The strongest risk factors for RNFLDs are CKD and ***,RNFLDs can be an ocular feature in patients with *** can help detect systemic diseases,and assessment for RNFLDs should be considered in CKD patients.

关键词： chronic kidney disease retinal nerve fiber layer defects Kailuan Eye Study fundus examination

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The In-Flight Realtime Trigger and Localization Software of GECAM

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Research in Astronomy and Astrophysics 2024年第10期24卷 11-24页

作者： Xiao-Yun Zhao Shao-Lin Xiong Xiang-yang Wen Xin-Qiao Li Ce cai Shuo Xiao Qi Luo Wen-Xi Peng Dong-Ya Guo Zheng-hua An Ke Gong jin-Yuan Liao yan-Qiu Zhang Yue huang Lu Li xing Wen Fei Zhang jing duan Chen-Wei Wang Dong-Li Shi Peng Zhang Qi-Bin Yi Chao-yang Li yan-Bing Xu Xiao-hua Liang Ya-Qing Liu Da-Li Zhang Xi-Lei Sun Fan Zhang Gang Chen huan-Yu Wang Sheng yang Xiao-jing Liu Min Gao Mao-Shun Li jin-Zhou Wang xing Zhou Yi Zhao Wang-Chen Xue Chao Zheng Jia-Cong Liu xing-Bo Han jin-Ling Qi Jia huang Ke-Ke Zhang Can Chen Xiong-Tao yang Dong-Jie Hou Yu-Sa Wang Rui Qiao Xiang Ma Xiao-Bo Li Ping Wang Xin-Ying Song Li-Ming Song Shi-Jie Zheng Bing Li Hong-Mei Zhang Yue Zhu Wei Chen jian-jian He Zhen Zhang jin Hou Hong-Jun Wang yan-Chao Hao Xiang-Yu Wang Zong-Yuan yang Zhi-Long Wen Zhi Chang Yuan-Yuan du Rui Gao Xiao-Fei Lan yan-Guo Li Gang Li Xu-Fang Li Fang-Jun Lu Hong Lu Bin Meng Feng Shi Hui Wang Hui-Zhen Wang Yu-Peng Xu Jia-Wei yang Xue-Juan yang Shuang-Nan Zhang Chao-Yue Zhang Cheng-Mo Zhang Zhi-Cheng Tang Cheng Cheng Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China School of Information Science and Technology Southwest Jiaotong UniversityChengdu 611756China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Physics and Space Science College China West Normal UniversityNanchong 637002China Department of Astronomy Beijing Normal UniversityBeijing 100875China Innovation Academy for Microsatellites of CAS Shanghai 201203China Changchun University of Science and Technology Changchun 130022China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China

Realtime trigger and localization of bursts are the key functions of GECAM,an all-sky gamma-ray monitor launched on 2020 December *** developed a multifunctional trigger and localization software operating in the CPU of the GECAM Electronic *** onboard software has the following features:high trigger efficiency for real celestial bursts with a suppression of false triggers caused by charged particle bursts and background fluctuation,dedicated localization algorithm optimized for both short and long bursts,and low time latency of the trigger information which is downlinked through the Global Short Message Communication service of the global BeiDou navigation *** paper provides a detailed description of the design and development of the trigger and localization software system for *** covers the general design,workflow,the main functions,and the algorithms used in the *** paper also includes on-ground trigger tests using simulated gamma-ray bursts generated by a dedicated X-ray tube,as well as an overview of the performance for real celestial bursts during its in-orbit operation.

关键词： telescopes instrumentation:detectors methods:observational

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Diagnosis,treatment and prevention of severe acute respiratory syndrome coronavirus 2 infection in children:experts'consensus statement updatedforthe Omicron variant

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World Journal of Pediatrics 2024年第3期20卷 272-286页

作者： Rong-Meng jiang Zheng-De Xie Yi jiang Xiao-Xia Lu Run-Ming jin Yue-Jie Zheng Yun-Xiao Shang Bao-Ping Xu Zhi-Sheng Liu Gen Lu Ji-Kui Deng Guang-hua Liu Xiao-Chuan Wang jian-She Wang Lu-Zhao Feng Wei Liu Yi Zheng Sai-Nan Shu Min Lu Wan-Jun Luo Miao Liu Yu-Xia Cui Le-Ping Ye A-Dong Shen Gang Liu Li-Wei Gao Li-Juan Xiong yan Bai Li-Kai Lin Zhuang Wei Feng-Xia Xue Tian-You Wang Dong-Chi Zhao jian-Bo Shao Daniel Kwok-keung Ng Gary Wing-kin Wong Zheng-yan Zhao xing-Wang Li Yong-Hong yang Kun-Ling Shen Diagnosis and Treatment Center of Infectious Diseases Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Beijing Key Laboratory of Pediatric Respiratory Infection Diseases Key Laboratory of Major Diseases in ChildrenMinistry of EducationNational Clinical Research Center for Respiratory DiseasesResearch Unit of Critical Infection in ChildrenChinese Academy of Medical Sciences2019RU016Laboratory of Infection and VirologyBeijing Pediatric Research InstituteBeijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing 100045China Department of Pediatrics Renmin Hospital of Wuhan UniversityWuhan 430060China Department of Respiratory Wuhan Children's HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430016China Department of Pediatrics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Respiratory Shenzhen Children's HospitalShenzhen 518038China Department of Pediatric Respiratory Shengjing Hospital Affiliated to China Medical UniversityShenyang 110004China Department of Respiratory Beijing Children's HospitalCapital Medical UniversityNational Clinical Research Center for Respiratory DiseasesNational Center for Children's HealthBeijing 100045China Department of Neurology Wuhan Children's HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430016China Department of Respiratory Guangzhou Women and Children's Medical CenterGuangzhou 510623China Department of Infectious Diseases Shenzhen Children's HospitalShenzhen 518038China Department of Pediatrics Fujian Branch of Shanghai Children's Medical CenterFujian Children's HospitalFuzhou350005China Department of Clinical Immunology and Allergy Children's Hospital of Fudan UniversityNational Center for Children's HealthShanghai 201102China Department of Infectious Diseases Children's Hospital of Fudan UniversityNational Center for Children's Health.Shanghai

It has been more than 3 years since the novel coronavirus(SARS-CoV-2)pandemic raged *** coronavirus disease 2019(COVID-19)has greatly influenced human *** to data from the World Health Organization(WHO),there were ove... 详细信息

关键词： prevention infection statement

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温湿度条件对六堡茶安全贮藏的影响及孢子计数法的应用

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粮油食品科技 2024年第3期32卷 187-194页

作者：晏玲玲王乐涯欧行畅李勤刘仲华黄建安湖南农业大学茶学教育部重点实验室湖南长沙410128 国家植物功能成分利用工程技术研究中心湖南长沙410128 植物功能成分利用省部共建协同创新中心湖南长沙410128 农业农村部园艺作物基因资源评价利用重点实验室湖南长沙410128

研究了温度35、30、25℃,湿度90%、80%、70%条件下六堡茶含水量变化及霉变情况,分析了温湿度对六堡茶含水量及霉变情况的影响,确定了六堡茶易霉变的温湿度条件;优化了孢子计数法应用于六堡茶的方法参数并评估了其在预测六堡茶霉变程度... 详细信息

研究了温度35、30、25℃,湿度90%、80%、70%条件下六堡茶含水量变化及霉变情况,分析了温湿度对六堡茶含水量及霉变情况的影响,确定了六堡茶易霉变的温湿度条件;优化了孢子计数法应用于六堡茶的方法参数并评估了其在预测六堡茶霉变程度的可行性。结果表明,温度低于25℃,湿度低于70%是六堡茶防止霉变的最优贮藏条件;孢子数量增长水平与霉变程度具有同步性,此方法应用于快速评估六堡茶霉变情况是可行的,且初步确定发生霉变的孢子数临界值为30.00×10^(7)个/g。结果为确定六堡茶的安全贮藏条件提供了依据,为其霉变程度的快速评估提供了可供参考的新方法。

关键词：六堡茶安全贮藏温湿度条件孢子计数法

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Searching for^(76)Ge neutrinoless double beta decay with the CDEX-1B experiment

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Chinese Physics C 2024年第10期48卷 11-22页

作者： Bing-Tao Zhang Jun-Zheng Wang Li-Tao yang Qian Yue Ke-Jun Kang Yuan-jing Li Hai-Peng An C.Greeshma jian-Ping Chang Yun-huan Chen jian-Ping Cheng Wen-Han Dai Zhi Deng Chang-Hao Fang Xin-Ping Geng Hui Gong Qiu-Ju Guo Xu-Yuan Guo Li He Sheng-Ming He jin-Wei Hu Han-Xiong huang Tu-Chen huang Hai-Tao Jia Xi jiang S.Karmakar Hao-Bin Li jian-Min Li jin Li Qian-Yun Li Ren-Ming-Jie Li Xue-Qian Li Yu-Lan Li Yi-Fan Liang Bin Liao Fong-Kay Lin Shin-Ted Lin Jia-Xuan Liu Shu-Kui Liu yan-Dong Liu Yu Liu Yuan-Yuan Liu Zhong-Zhi Liu Hao Ma Yu-cai Mao Qi-Yuan Nie jin-hua Ning Hui Pan Ning-Chun Qi Jie Ren Xi-Chao Ruan Ze She Manoj Kumar Singh Tian-Xi Sun Chang-jian Tang Wei-You Tang yang Tian Guang-Fu Wang Li Wang Qing Wang Yu-Feng Wang Yun-Xiang Wang Henry-Tsz-King Wong Shi-Yong Wu Yu-Cheng Wu Hao-yang xing Rui Xu Yin Xu Tao Xue Yu-Lu yan Nan Yi Chun-Xu Yu Hai-Jun Yu jian-Feng Yue Ming Zeng Zhi Zeng Feng-Shou Zhang Lei Zhang Zhen-hua Zhang Zhen-Yu Zhang Kang-Kang Zhao Ming-Gang Zhao Ji-Fang Zhou Zu-Ying Zhou jing-Jun Zhou Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua UniversityBeijing 100084 Department of Physics Tsinghua UniversityBeijing 100084 Institute of Physics Academia SinicaTaipei 11529 NUCTECH Company Beijing 100084 YaLong River Hydropower Development Company Chengdu 610051 College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875 College of Physics Sichuan UniversityChengdu 610065 School of Physics Peking UniversityBeijing 100871 Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413 Sino-French Institute of Nuclear and Technology Sun Yat-sen UniversityZhuhai 519082 School of Physics Nankai UniversityTianjin 300071 Department of Physics Banaras Hindu UniversityVaranasi 221005 Department of Physics Beijing Normal UniversityBeijing 100875

We operated a p-type point contact high purity germanium(PPCGe)detector(CDEX-1B,1.008 kg)in the China jinping Underground Laboratory(CJPL)for 500.3 days to search for neutrinoless double beta(0νββ)decay of^(76)Ge.A total of 504.3 kg⋅day effective exposure data was *** anti-coincidence and the multi/single-site event(MSE/SSE)discrimination methods were used to suppress the background in the energy region of interest(ROI,1989–2089 keV for this work)with a factor of 23.A background level of 0.33 counts/(keV⋅kg⋅yr)was *** lower limit on the half life of^(76)Ge 0νββdecay was constrained as T_(1/2)^(0ν)>1.0×10^(23)yr(90%C.L.),corresponding to the upper limits on the effective Majorana neutrino mass:2–7.5 eV.

关键词： neutrinoless double beta decay CDEX point-contact germanium detector ^(76)Ge

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非洲猪瘟病毒阻断ELISA抗体检测方法的建立

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动物医学进展 2024年第3期45卷 42-47页

作者：林彦星翁巧玉阮周曦吴江黄超华金业陈鹏张彩虹杨俊兴曹琛福史卫军刘建利花群义深圳海关动植物检验检疫技术中心广东深圳518045 湖南普简生物科技有限公司湖南长沙410013 深圳市心月生物科技有限公司广东深圳518000

为建立一种非洲猪瘟病毒抗体阻断ELISA检测方法,以原核表达ASFV p72重组蛋白作为包被抗原,HRP标记的p72特异性单克隆抗体作为酶标抗体,建立了非洲猪瘟病毒抗体阻断酶联免疫吸附试验(ELISA)检测方法。结果显示,该方法中血清以1∶10稀释,... 详细信息

为建立一种非洲猪瘟病毒抗体阻断ELISA检测方法,以原核表达ASFV p72重组蛋白作为包被抗原,HRP标记的p72特异性单克隆抗体作为酶标抗体,建立了非洲猪瘟病毒抗体阻断酶联免疫吸附试验(ELISA)检测方法。结果显示,该方法中血清以1∶10稀释,酶标单抗以1∶6000稀释,临界值为50.12%。该方法特异性强,与猪流行性腹泻病毒(PEDV)、猪传染性胃肠炎病毒(TGEV)、猪瘟病毒(CSFV)、伪狂犬病病毒(PRV)和猪繁殖与呼吸综合征病毒(PRRSV)阳性血清无交叉反应。对强阳性血清的最低稀释度为1∶640,弱阳性血清的最低稀释度为1∶10,具有较高的敏感性;重复性好,批内和批间变异系数均小于5%。应用所建立的方法与商品化同类检测试剂盒对174份血清进行检测,ASFV抗体阳性符合率为100%,阴性符合率为96.75%,总符合率为97.28%。建立的阻断ELISA方法可用于非洲猪瘟病毒抗体检测。

关键词：非洲猪瘟病毒 p72蛋白单克隆抗体阻断酶联免疫吸附试验

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基于同步辐射技术研究金属锌蒸汽在飞灰小颗粒表面的凝结特性（英文）

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2015年第1期16卷 70-80页

作者： Xu cai qun-xing huang Moussa-mallaye ALHADJ-MALLAH Yong CHI jian-hua yan State Key Laboratory of Clean Energy Utilization Institute for Thermal Power EngineeringZhejiang University

目的:寻找金属污染物在热转化过程中的生成和迁移规律,为可燃固体废弃物高效清洁能源化利用提供科学指导。方法:飞灰采自两台不同类型在运行固废焚烧炉;采样关位置位于烟气净化系统之前以规避干扰;利用同步辐射技术中的X射线近边吸收结... 详细信息

目的:寻找金属污染物在热转化过程中的生成和迁移规律,为可燃固体废弃物高效清洁能源化利用提供科学指导。方法:飞灰采自两台不同类型在运行固废焚烧炉;采样关位置位于烟气净化系统之前以规避干扰;利用同步辐射技术中的X射线近边吸收结构和吸收精细结构谱图结合热力学模拟对金属锌的形态进行分析和研究。结论:1.金属锌在炉排炉飞灰小颗粒上主要以氯化物形式存在,而在流化床飞灰小颗粒上是以铝硅酸盐为主;2.燃烧过程中的高硫氮比能够有效减少锌有毒形态的生成;3.硅、铝和钙基材料是锌蒸汽有效的吸附剂。

关键词：锌形态冷凝特性同步辐射固体废弃物

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气相色谱-静电场轨道阱质谱在食品和药品分析中的研究进展

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药物分析杂志 2024年第1期44卷 1-10页

作者：吴炎培原文鹏胡新华聂黎行黄烈岩邢江涛于健东魏锋马双成中国食品药品检定研究院北京100050 深圳市人民医院(暨南大学第二临床医学院南方科技大学第一附属医院)药学部深圳518020 赛默飞世尔科技(中国)有限公司北京100013 国家药典委员会北京100061

气相色谱-静电场轨道阱质谱(gas chromatography-Orbitrap mass spectrometry,GC-Orbitrap/MS)作为新兴的高分辨气质联用技术,可实现挥发性成分的精确质量检测和高通量定性定量分析,具有灵敏度高,选择性强,线性动态范围宽等优点,能够很... 详细信息

气相色谱-静电场轨道阱质谱(gas chromatography-Orbitrap mass spectrometry,GC-Orbitrap/MS)作为新兴的高分辨气质联用技术,可实现挥发性成分的精确质量检测和高通量定性定量分析,具有灵敏度高,选择性强,线性动态范围宽等优点,能够很好地应对复杂基质中多种痕量物质分析带来的挑战,近年已开始应用于环境、工业、食品、制药、司法、临床等领域。本文对GC-Orbitrap/MS技术进行全面综述,阐述其基本原理及技术特点,介绍该技术在食品与药品分析研究中的应用进展,包括食品中农药残留检查、持久性有机物检测、香气物质分析和化学药品杂质分析与中药质量评价,并重点分析在超痕量成分测定和未知化合物鉴别方面的优势。最后,从高分辨率标准数据库的建立、可变电子电压技术的应用、样品前处理方式的选择开发与优化、二维GC-Orbitrap/MS串联等角度,提出GC-Orbitrap/MS未来发展方向并展望其应用前景。

关键词：气相色谱-静电场轨道阱质谱高分辨质谱食品药品农药残留持久性有机物香气物质杂质分析中药质量评价综述

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