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柱上甲基化-碘化钾改性硅胶还原法分离石油样品中芳香类含硫化合物

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石油学报（石油加工） 2024年第3期40卷 784-790页

作者：吴建勋李硕凡程海洋张未来张亚和史权中国石油大学(北京)重质油国家重点实验室石油分子工程中心北京102249

研究开发了一种通过层析柱上甲基化-碘化钾改性硅胶还原法分离石油芳香类含硫化合物的新方法。通过填充担载了六氟锑酸银的硅藻土制备固相萃取柱,实现含硫化合物的快速甲基化和对甲基锍盐的富集;再通过碘化钾改性硅胶对芳香类甲基锍盐... 详细信息

研究开发了一种通过层析柱上甲基化-碘化钾改性硅胶还原法分离石油芳香类含硫化合物的新方法。通过填充担载了六氟锑酸银的硅藻土制备固相萃取柱,实现含硫化合物的快速甲基化和对甲基锍盐的富集;再通过碘化钾改性硅胶对芳香类甲基锍盐进行快速还原,最终得到高纯度的芳香类含硫化合物。利用模型化合物对该方法进行验证,同时将该方法应用于柴油和原油样品,并结合气相色谱串联硫化学发光检测器和气相色谱串联质谱对分离组分进行分析。模型化合物分析结果表明,该方法对包含屏蔽型结构在内的二苯并噻吩类化合物回收率可达95%以上。石油样品的分析结果表明,该方法可实现对不同类型芳香类含硫化合物的高纯度分离,且操作简单、快捷。

关键词：含硫化合物分离柱上甲基化改性硅胶气相色谱-质谱

基于银型苯基磺酸键合硅胶分离及高分辨质谱分析石油中不同形态含硫化合物

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石油学报（石油加工） 2024年第3期40卷 763-773页

作者：李硕凡刘雨轩吴建勋王婧朱悦张未来张亚和史权中国石油大学(北京)重质油国家重点实验室北京102249

建立一种基于银型苯基磺酸键合硅胶(Ag+-SCX)分离石油中不同形态含硫化合物的方法,分离得到的含硫化合物组分进行甲基化反应和高分辨质谱(HRMS)分析,得到不同形态含硫化合物分子组成。通过模型化合物证明该分离方法的可行性,硫醚类、噻... 详细信息

建立一种基于银型苯基磺酸键合硅胶(Ag+-SCX)分离石油中不同形态含硫化合物的方法,分离得到的含硫化合物组分进行甲基化反应和高分辨质谱(HRMS)分析,得到不同形态含硫化合物分子组成。通过模型化合物证明该分离方法的可行性,硫醚类、噻吩类含硫化合物被有效分离。该方法对石油馏分、原油和二次加工油均有良好的适用性,并将其应用于一套原油及其馏分中含硫化合物的分离及分析,详细表征了不同形态含硫化合物在原油和各馏分段的分子组成特点和分布规律。

关键词：分离方法高分辨质谱硫醚噻吩分子组成原油

血清8-OHdG、T-cad与急性胰腺炎患者病情严重程度、疾病转归的关系

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中南医学科学杂志 2024年第4期52卷 592-595页

作者：林学贤张亚和崔光锐万宁市人民医院消化内科海南万宁571500 海南医科大学第二附属医院消化内镜科海南海口570216

目的探讨血清8-羟基脱氧鸟苷(8-OHdG)、T-钙黏蛋白(T-cad)与急性胰腺炎(AP)患者病情严重程度、疾病转归的关系。方法选取88例AP患者,按病情严重程度分为轻症组和重症组,按照预后分为预后不良组和预后良好组;另选取健康体检者60例为对照... 详细信息

目的探讨血清8-羟基脱氧鸟苷(8-OHdG)、T-钙黏蛋白(T-cad)与急性胰腺炎(AP)患者病情严重程度、疾病转归的关系。方法选取88例AP患者,按病情严重程度分为轻症组和重症组,按照预后分为预后不良组和预后良好组;另选取健康体检者60例为对照组。比较各组血清8-OHdG、T-cad水平和Ranson评分。分析血清8-OHdG、T-cad与Ranson评分关系、血清8-OHdG和T-cad对AP预后的评估价值以及AP患者预后的影响因素。结果8-OHdG水平和Ranson评分重症组>轻症组>对照组,预后不良组>预后良好组;T-cad水平重症组<轻症组<对照组,预后不良组<预后良好组(P<0.05)。8-OHdG与Ranson评分呈正相关,T-cad与Ranson评分呈负相关(P<0.05)。入院Ranson评分、8-OHdG、T-cad是AP患者预后的危险因素(P<0.001)。血清8-OHdG、T-cad两者联合预测AP患者预后的效能最高(P<0.05)。结论急性胰腺炎患者血清8-OHdG和T-cad与疾病严重程度及预后有关,有望作为预测急性胰腺炎患者预后的生物学指标。

关键词： 8-OHdG T-cad 急性胰腺炎病情预后

Identification of acephenanthrylene and aceanthrylene in aerosol and its environmental implication

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Chinese Science Bulletin 2008年第6期53卷 890-894页

作者： SHI Quan WANG TieGuan ZHONG NingNing zhang ZhiHuan zhang yahe State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102200 China State Key Laboratory of Petroleum Resource And Prospecting China University of Petroleum Beijing 102200 China

Acephenanthrylene and aceanthrylene in aromatic fraction of aerosols were identified by means of online hydrogenation gas chromatography mass spectrometry(GCMS). Compared aerosols from vari- ous sources, acephenanthrylene and aceanthrylene were ubiquitously present in urban aerosol. High concentration of acephenanthrylene and aceanthrylene were found in agricultural biomass and coal combustion particles. However, it is difficult to detect in exhaust from gasoline and diesel engine, dustfall, waste water, soil, and sediment. Combustion emissions were considered the major source of acephenanthrylene and aceanthrylene, which can be used as a potential molecular marker for the source pollution in urban aerosols.

关键词：大气污染悬浮微粒污染源气相色谱质谱法

Characterization of heavy petroleum fraction by positive-ion electrospray ionization FT-ICR mass spectrometry and collision induced dissociation: Bond dissociation behavior and aromatic ring architecture of basic nitrogen compounds

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Science China Chemistry 2013年第7期56卷 874-882页

作者： zhang LinZhou zhang yahe ZHAO SuoQi XU ChunMing CHUNG Keng H. SHI Quan State Key Laboratory of Heavy Oil Processing China University of Petroleum

This paper examined the bond dissociation behavior and aromatic ring architecture of basic nitrogen compounds in Sudan heavy petroleum fraction. Both broadband and quadrupole isolation modes positive-ion electrospray ionization （ESI） Fourier transform ion cyclotron resonance mass spectrometry （FT-ICR MS） coupled with collision induced dissociation （CID） tech- niques were used to characterize a low sulfur crude oil derived vacuum residuum （VR）. The appropriate CID operating condi- tion was selected by comparing the molecular weight distributions of the basic nitrogen compounds under various CID operat- ing conditions. Both odd- and even-electron fragment ions were observed from the mass spectrum, indicating that the hetero- lyric and homolytic bond cleavages occurred simultaneously during the CID process. The odd-electron fragment ions were predominant in each class species, indicating preferential heterolytic bond cleavages. At the optimal CID condition, the alkyl groups decomposed deeply and just left the aromatic cores of the nitrogen compounds. No Significant variation in double bond equivalent （DBE） value was observed between the fragment and parent ions, revealing that the domination of single core structure.

关键词： FT-ICR MS CID heavy oil molecular structure

Chinese traditional culture is reflected in modem design -Take the new Chinese furniture design as an example

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International English Education Research 2017年第6期 85-87页

作者： zhang yahe CHEN Liesheng Shanghai University Of Engineering Science china

The ＂poly＂ chair is a combination of the excellent elements of traditional arts and crafts and modern materials. Some innovations have been made while respecting the lines and patterns of the traditional chair in the design of the ＂poly＂ chair. The structure of the chair adopts the traditional pattern fish scale pattern, engraving it on the seat surface, which not only looks beautiful but also plays a supporting role; its transparent feeling gives a visual feast. In each of its structures, some of our traditional elements are properly applied to the chairs. Break the wooden structure of the past, the use of stainless steel material, the perfect combination of traditional and modern elements. So that ＂poly＂ chair is not only an ornamental handicrafts, but also a use of furniture, functional and decorative unity. In giving the feeling of light and transparent at the same time, gives a sense of grace. This design report details the selection of topics from research, to the design of the entire process.

关键词： Chairs paper cuts metal fish scales traditional furniture

Effects of experimental conditions on the molecular composition of maltenes and asphaltenes derived from oilsands bitumen: Characterized by negative-ion ESI FT-ICR MS

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Science China Chemistry 2013年第7期56卷 863-873页

作者： WANG LiTao HE Chen LIU Yang ZHAO SuoQi zhang yahe XU ChunMing CHUNG Keng H. SHI Quan State Key Laboratory of Heavy Oil Processing China University of Petroleum Well Resources Inc.

A vacuum topped Canadian oilsands bitumen （VTB） was subjected to solvent precipitation and subsequently characterized by elemental analysis, gel permeation chromatograph （GPC）, IH-NMR spectroscopy and negative-ion electrospray ionization （ESI） Fourier transform ion cyclotron resonance mass spectrometry （FT-ICR MS）. Effects of experimental conditions such as solvent types （n-Cs, n-C6, and n-C7）, solvent purity, and solvent washing time on asphaltenes yields, bulk composition, and molecular composition of detectable heteroatom compounds in ESI source were determined. Elemental nitrogen and sulfur were enriched in asphaltenes while elemental oxygen had comparable content in maltenes and asphaltenes. Molecular compo- sition of asphaltenes varies with separation conditions. The N1 and O1 species identified by ESI FT-ICR MS were enriched in maltenes. The 02 species exhibited two different double bond equivalents （DBE） distributions and solubility in normal paraffin solvents, indicating two types of molecular structures. Multi oxygen atom containing compounds mainly detected in asphal- tenes. Compound class distributions are similar for maltenes derived from n-Cs, n-C6, and n-C7 , as well as for asphaltenes. The cyclic paraffin impurities in normal paraffin solvents had a significant influence on asphaltenes yields and heteroatom molecu- lar composition. A portion of neutral N1 species and acidic 02 species adsorbed on asphaltenes could be dissolved by increas- ing washing time. Cautions should be exercised when interpreting the properties and composition of asphaltenes obtained with different experimental conditions.

关键词： asphaltene precipitation experimental conditions bulk properties molecular composition ESI FT-ICR MS

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微粒群算法在SBR污水处理系统中的应用

上海电气技术 2011年第1期4卷 6-10页

作者：张亚鹤同济大学上海201804

污水处理过程是一个具有大时滞、非线性、强干扰的复杂控制对象,需要不断把当前最先进的优化算法应用到污水处理过程中以优化现有污水处理系统。详细介绍了微粒群算法(PSO)应用到各种污水处理系统中进行优化的方法并给出了PSO算法本身... 详细信息

污水处理过程是一个具有大时滞、非线性、强干扰的复杂控制对象,需要不断把当前最先进的优化算法应用到污水处理过程中以优化现有污水处理系统。详细介绍了微粒群算法(PSO)应用到各种污水处理系统中进行优化的方法并给出了PSO算法本身的优化。

关键词：污水处理系统微粒群优化算法序批式活性污泥法溶解氧浓度

Determination of Unknown Compound in Aromatics by FT-ICR MS with Various Ionization Techniques

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 439-439页

作者： zhang yahe LU Hong REN Limin SHI Quan XU Chunming GUO Shaohui State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 College of Science China University of Petroleum Beijing 102249 State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640

Electrospray ionization （ESI） coupled with Fourier transform ion cyclotron resonance mass spectrometry （ FT-ICR MS） is a powerful technique capable of detecting heteroatom compounds, present in trace quantities in crude oil and its products without prior sample pretreatment. It enables the assignment of a unique elemental composition to each peak in the mass spectrum of petroleum samples.

关键词： PETROLEUM AROMATIC compounds POLYCYCLIC aromatic hydrocarbons ATMOSPHERIC pressure PHOTOIONIZATION FOURIER transform spectroscopy